Intro4u2u

HTML clipboardAngle Valve: A valve design in which one port is co-linear with the valve stem or actuator, and the other port is at a right angle to the valve stem. (See also Globe Valve.) Bellows Seal Bonnet: A bonnet that uses a bellows for sealing against leakage around the closure member stem (figure 1–6). Bonnet: The portion of the valve that contains the packing box and stem seal and can guide the stem. It provides the principal opening to the body cavity for assembly of internal parts or it can be an integral part of the valve body. It can also provide for the attachment of the actuator to the valve body.

Typical bonnets are bolted, threaded, welded, pressureseals, or integral with the body. (This term is often used in referring to the bonnet and its included packing parts. More properly, this group of component parts should be called the bonnet assembly.) Bonnet Assembly: (Commonly Bonnet, more properly Bonnet Assembly): An assembly including the part through which a valve stem moves and a means for sealing against leakage along the stem. It usually provides a means for mounting the actuator and loading the packing assembly. Bottom Flange: A part that closes a valve body opening opposite the bonnet opening. It can include a guide bushing and/or serve to allow reversal of the valve action. Bushing: A device that supports and/ or guides moving parts such as valve stems.

Cage: A part of a valve trim that surrounds the closure member and can provide flow characterization and/or a seating surface. It also provides stability, guiding, balance, and alignment, and facilitates assembly of other parts of the valve trim. The walls of the cage contain openings that usually determine the flow characteristic of Chapter 1. Introduction to Control Valves 10 Figure 1-8. Characterized Cages for Globe-Style Valve Bodies W0958/IL W0959/IL W0957/IL   
 
 the control valve. Various cage styles are shown in figure 1-8. Closure Member: The movable part of the valve that is positioned in the flow path to modify the rate of flow through the valve. Closure Member Guide: That portion of a closure member that aligns its movement in either a cage, seat ring, bonnet, bottom flange, or any two of these. Cylinder: The chamber of a piston actuator in which the piston moves (figure 1-7). Cylinder Closure Seal: The sealing element at the connection of the piston actuator cylinder to the yoke. Diaphragm: A flexible, pressure responsive element that transmits force to the diaphragm plate and actuator stem. Diaphragm Actuator: A fluid powered device in which the fluid acts upon a flexible component, the diaphragm. Diaphragm Case: A housing, consisting of top and bottom section, used for supporting a diaphragm and establishing one or two pressure chambers. Diaphragm Plate: A plate concentric with the diaphragm for transmitting force to the actuator stem. Direct Actuator: A diaphragm actuator in which the actuator stem extends with increasing diaphragm pressure. Extension Bonnet: A bonnet with greater dimension between the packing box and bonnet flange for hot or cold service. Globe Valve: A valve with a linear motion closure member, one or more ports, and a body distinguished by a globular shaped cavity around the port region. Globe valves can be further classified as: two-way single-ported; two-way double-ported (figure 1-9); angle-style (figure 1-10); three-way (figure 1-11); unbalanced cage-guided (figure 1-3); and balance cage-guided (figure 1-12). Lower Valve Body: A half housing for internal valve parts having one flow connection. The seat ring is normally clamped between the upper valve body and the lower valve body in split valve constructions.

Offset Valve: A valve construction having inlet and outlet line connections on different planes but 180 degrees opposite each other. Packing Box (Assembly): The part of the bonnet assembly used to seal against leakage around the closure Chapter 1. Introduction to Control Valves 11 Figure 1-9. Reverse Double-Ported Globe-Style Valve Body W0467/IL Figure 1-10. Flanged Angle-Style Control Valve Body W0971/IL member stem. Included in the complete packing box assembly are various combinations of some or all of the following component parts: packing, packing follower, packing nut, lantern ring, packing spring, packing flange, packing flange studs or bolts, packing flange nuts, packing ring, packing wiper ring, felt wiper ring, belleville springs, anti-extrusion ring. Individual Figure 1-11. Three-Way Valve with Balanced Valve Plug W0665/IL Figure 1-12. Valve Body with Cage-Style Trim, Balanced Valve Plug, and Soft Seat W0992/IL packing parts are shown in figure 1-13. Piston: A movable pressure responsive element that transmits force to the piston actuator stem (figure 1-7). Piston Type Actuator: A fluid powered device in which the fluid acts upon a movable piston to provide motion to the actuator stem. Piston type actuators (figure 1-7) are classified as either double-acting, so that full power Chapter 1. Introduction to Control Valves 12 Figure 1-13. Comprehensive Packing Material Arrangements for Globe-Style Valve Bodies B2565 / IL LOCATION OF SACRIFICIAL ZINC WASHER, IF USED. 
  

 14A1849-E 1 12A7837-A 
  
 13A9775-E can be developed in either direction, or as spring-fail so that upon loss of supply power, the actuator moves the valve in the required direction of travel. Plug: A term frequently used to refer to the closure member. Port: The flow control orifice of a control valve. Retaining Ring: A split ring that is used to retain a separable flange on a valve body. Reverse Actuator: A diaphragm actuator in which the actuator stem retracts with increasing diaphragm pressure. Reverse actuators have a seal bushing (figure 1-4) installed in the upper end of the yoke to prevent leakage of the diaphragm pressure along the actuator stem. Rubber Boot: A protective device to prevent entrance of damaging foreign material into the piston actuator seal bushing. Seal Bushing: Top and bottom bushings that provide a means of sealing the piston actuator cylinder against leakage. Synthetic rubber O-rings are used in the bushings to seal the cylinder, the actuator stem, and the actuator stem extension (figure 1-7). Seat: The area of contact between the closure member and its mating surface that establishes valve shut-off. Seat Load: The net contact force between the closure member and seat with stated static conditions. In practice, the selection of an actuator for a given control valve will be based on how much force is required to overcome static, stem, and dynamic unbalance with an allowance made for seat load. Seat Ring: A part of the valve body assembly that provides a seating surface for the closure member and can provide part of the flow control orifice. Separable Flange: A flange that fits over a valve body flow connection. It is generally held in place by means of a retaining ring. Spring Adjustor: A fitting, usually threaded on the actuator stem or into

Chapter 1. Introduction to Control Valves 13 the yoke, to adjust the spring compression. Spring Seat: A plate to hold the spring in position and to provide a flat surface for the spring adjustor to contact. Static Unbalance: The net force produced on the valve stem by the fluid pressure acting on the closure member and stem with the fluid at rest and with stated pressure conditions. Stem Connector: The device that connects the actuator stem to the valve stem. Trim: The internal components of a valve that modulate the flow of the controlled fluid. In a globe valve body, trim would typically include closure member, seat ring, cage, stem, and stem pin. Trim, Soft-Seated: Valve trim with an elastomeric, plastic or other readily deformable material used either in the closure component or seat ring to provide tight shutoff with minimal actuator forces. Upper Valve Body: A half housing for internal valve parts and having one flow connection. It usually includes a means for sealing against leakage along the stem and provides a means for mounting the actuator on the split valve body. Valve Body: The main pressure boundary of the valve that also provides the pipe connecting ends, the fluid flow passageway, and supports the seating surfaces and the valve closure member. Among the most common valve body constructions are: a) single-ported valve bodies having one port and one valve plug; b) double-ported valve bodies having two ports and one valve plug; c) twoway valve bodies having two flow connections, one inlet and one outlet; d) three-way valve bodies having three flow connections, two of which can be inlets with one outlet (for converging or mixing flows), or one inlet and two outlets (for diverging or diverting flows). The term valve body, or even just body, frequently is used in referring to the valve body together with its bonnet assembly and included trim parts. More properly, this group of components should be called the valve body assembly. Valve Body Assembly (Commonly Valve Body or Valve, more properly Valve Body Assembly): An assembly of a valve, bonnet assembly, bottom flange (if used), and trim elements. The trim includes the closure member, which opens, closes, or partially obstructs one or more ports. Valve Plug: A term frequently interchanged with plug in reference to the closure member. Valve Stem: In a linear motion valve, the part that connects the actuator stem with the closure member. Yoke: The structure that rigidly connects the actuator power unit to the valve.

HTML clipboardLinear Characteristic*: An inherent flow characteristic that can be repreChapter 1. Introduction to Control Valves 5 sented by a straight line on a rectangular plot of flow coefficient (Cv) versus rated travel. Therefore equal increments of travel provide equal increments of flow coefficient, Cv (figure 1-2). Loop: (See Closed Loop.) Loop Gain: The combined gain of all the components in the loop when viewed in series around the loop. Sometimes referred to as open-loop gain. It must be clearly specified whether referring to the static loop gain or the dynamic loop gain at some frequency.

Manual Control: (See Open Loop.) Open Loop: The condition where the interconnection of process control components is interrupted such that information from the process variable is no longer fed back to the controller set point so that corrections to the process variable are no longer provided. This is typically accomplished by placing the controller in the manual operating position. Packing: A part of the valve assembly used to seal against leakage around the valve disk or stem. Positioner*: A position controller (servomechanism) that is mechanically connected to a moving part of a final control element or its actuator and that automatically adjusts its output to the actuator to maintain a desired position in proportion to the input signal. Process: All the combined elements in the control loop, except the controller. The process typically includes the control valve assembly, the pressure vessel or heat exchanger that is being controlled, as well as sensors, pumps, and transmitters.

Process Gain: The ratio of the change in the controlled process variable to a corresponding change in the output of the controller. Process Variability: A precise statistical measure of how tightly the process is being controlled about the set point. Process variability is defined in percent as typically (2s/m), where m is the set point or mean value of the measured process variable and s is the standard deviation of the process variable. Quick Opening Characteristic*:

An inherent flow characteristic in which a maximum flow coefficient is achieved with minimal closure member travel (figure 1-2). Relay: A device that acts as a power amplifier. It takes an electrical, pneumatic, or mechanical input signal and produces an output of a large volume flow of air or hydraulic fluid to the actuator. The relay can be an internal component of the positioner or a separate valve accessory. Resolution: The minimum possible change in input required to produce a detectable change in the output when no reversal of the input takes place.

Resolution is typically expressed as a percent of the input span. Response Time: Usually measured by a parameter that includes both dead time and time constant. (See T63, Dead Time, and Time Constant.) When applied to the valve, it includes the entire valve assembly. Second-Order: A term that refers to the dynamic relationship between the input and output of a device. A second- order system or device is one that has two energy storage devices that can transfer kinetic and potential energy back and forth between themselves, thus introducing the possibility of oscillatory behavior and overshoot. Sensor: A device that senses the value of the process variable and provides a corresponding output signal to a transmitter. The sensor can be an integral part of the transmitter, or it may be a separate component. Chapter 1. Introduction to Control Valves 6 Set Point: A reference value representing the desired value of the process variable being controlled. Shaft

Wind-Up: A phenomenon where one end of a valve shaft turns and the other does not. This typically occurs in rotary style valves where the actuator is connected to the valve closure member by a relatively long shaft. While seal friction in the valve holds one end of the shaft in place, rotation of the shaft at the actuator end is absorbed by twisting of the shaft until the actuator input transmits enough force to overcome the friction. Sizing (Valve): A systematic procedure designed to ensure the correct valve capacity for a set of specified process conditions. Stiction: (See Friction.) T63 (Tee-63): A measure of device response. It is measured by applying a small (usually 1-5%) step input to the system. T63 is measured from the time the step input is initiated to the time when the system output reaches 63% of the final steady-state value. It is the combined total of the system Dead Time (Td) and the system Time Constant (t). (See Dead Time and Time Constant.) Time Constant: A time parameter that normally applies to a first-order element. It is the time interval measured from the first detectable response of the system to a small (usually 0.25% - 5%) step input until the system output reaches 63% of its final steady-state value. (See T63.) When applied to an open-loop process, the time constant is usually designated as
(Tau). When applied to a closed-loop system, the time constant is usually designated as λ (Lambda). Transmitter: A device that senses the value of the process variable and transmits a corresponding output signal to the controller for comparison with the set point. Travel*: The movement of the closure member from the closed position to an intermediate or rated full open position. Travel Indicator: A pointer and scale used to externally show the position of the closure member typically with units of opening percent of travel or degrees of rotation. Trim*: The internal components of a valve that modulate the flow of the controlled fluid.

Valve: (See Control Valve Assembly.) Volume Booster: A stand-alone relay is often referred to as a volume booster or simply booster because it boosts, or amplifies, the volume of air supplied to the actuator. (See Relay.) Sliding-Stem Control Valve Terminology The following terminology applies to the physical and operating characteristics of standard sliding-stem control valves with diaphragm or piston actuators. Some of the terms, particularly those pertaining to actuators, are also appropriate for rotary-shaft control valves. Many of the definitions presented are in accordance with ISA S75.05,

Control Valve Terminology, although other popular terms are also included. Additional explanation is provided for some of the more complex terms. Component part names are called out on accompanying figures 1-3 through 1-6. Separate sections follow that define specific rotaryshaft control valve terminology, control valve functions and characteristics terminology, and other process control terminology. Actuator Spring: A spring, or group of springs, enclosed in the yoke or actuator casing that moves the actuator stem in a direction opposite to that created by diaphragm pressure.

HTML clipboardThe controller output (CO) is the input to the valve assembly and the process variable (PV) is the output as shown in figure 1-1. When the term Dead Band is used, it is essential that both the input and output variables are identified, and that any tests to measure dead band be under fully loaded conditions. Dead band is typically expressed as a percent of the input span. Dead Time: The time interval (Td) in which no response of the system is detected following a small (usually 0.25% - 5%) step input.

It is measured from the time the step input is initiated to the first detectable response of the system being tested. Dead Time can apply to a valve assembly or to the entire process. (See T63.) Disk: A valve trim element used to modulate the flow rate with either linear or rotary motion. Can also be referred to as a valve plug or closure member.

Equal Percentage Characteristic*: An inherent flow characteristic that, for equal increments of rated travel, will ideally give equal percentage changes of the flow coefficient (Cv) (figure 1-2). Final Control Element: The device that implements the control strategy determined by the output of the controller. While the final control element can be a damper, a variable speed drive pump, or an on-off switching device, the most common final control element in the process control industries is the control valve assembly. The control valve manipulates a flowing fluid, such as gasses, steam, water, or chemical compounds, to compensate for the load disturbance and keep the regulated process variable as close as possible to the desired set point. First-Order: A term that refers to the dynamic relationship between the input and output of a device. A first-order system or device is one that has only one energy storage device and whose dynamic transient relationship between the input and output is characterized by an exponential behavior. Friction: A force that tends to oppose the relative motion between two surfaces that are in contact with each other. The friction force is a function of the normal force holding these two surfaces together and the characteristic nature of the two surfaces. Friction has two components: static friction and dynamic friction. Static friction is the force that must be overcome before there is any relative motion between the two surfaces. Once relative movement has begun, dynamic friction is the force that must be overcome to maintain the relative motion. Running or sliding friction are colloquial terms that are sometimes used to describe dynamic friction. Stick/slip or “stiction” are colloquial terms that are sometimes used to describe static friction. Static friction is one of the major causes of dead band in a valve assembly. Gain: An all-purpose term that can be used in many situations. In its most general sense, gain is the ratio of the magnitude of the output change of a given system or device to the magnitude of the input change that caused the output change. Gain has two components: static gain and dynamic gain. Static gain is the gain relationship between the input and output and is an indicator of the ease with which the input can initiate a change in the Chapter 1. Introduction to Control Valves 4 Figure 1-2. Inherent Valve Characteristics A3449/IL output when the system or device is in a steady-state condition. Sensitivity is sometimes used to mean static gain. Dynamic gain is the gain relationship between the input and output when the system is in a state of movement or flux. Dynamic gain is a function of frequency or rate of change of the input. Hysteresis*:

The maximum difference in output value for any single input value during a calibration cycle, excluding errors due to dead band. Inherent Characteristic*: The relationship between the flow coefficient and the closure member (disk) travel as it is moved from the closed position to rated travel with constant pressure drop across the valve. Typically these characteristics are plotted on a curve where the horizontal axis is labeled in percent travel and the vertical axis is labeled as percent flow (or Cv) (figure 1-2). Because valve flow is a function of both the valve travel and the pressure drop across the valve, conducting flow characteristic tests at a constant pressure drop provides a systematic way of comparing one valve characteristic design to another. Typical valve characteristics conducted in this manner are named Linear, Equal-Percentage, and Quick Opening (figure 1-2). Inherent Valve Gain: The magnitude ratio of the change in flow through the valve to the change in valve travel under conditions of constant pressure drop. Inherent valve gain is an inherent function of the valve design. It is equal to the slope of the inherent characteristic curve at any travel point and is a function of valve travel. Installed Characteristic*: The relationship between the flow rate and the closure member (disk) travel as it is moved from the closed position to rated travel as the pressure drop across the valve is influenced by the varying process conditions. (See Valve Type and Characterization in Chapter 2 for more details on how the installed characteristic is determined.) Installed Valve Gain: The magnitude ratio of the change in flow through the valve to the change in valve travel under actual process conditions. Installed valve gain is the valve gain relationship that occurs when the valve is installed in a specific system and the pressure drop is allowed to change naturally according to the dictates of the overall system. The installed valve gain is equal to the slope of the installed characteristic curve, and is a function of valve travel.

(See Valve Type and Characterization in Chapter 2 for more details on how the installed gain is determined.) I/P: Shorthand for current-to-pressure (I-to-P). Typically applied to input transducer modules. Linearity*: The closeness to which a curve relating to two variables approximates a straight line. (Linearity also means that the same straight line will apply for both upscale and downscale directions. Thus, dead band as defined above, would typically be considered a non-linearity.)

HTML clipboardWhat Is A Control Valve?

Process plants consist of hundreds, or even thousands, of control loops all networked together to produce a product to be offered for sale. Each of these control loops is designed to keep some important process variable such as pressure, flow, level, temperature, etc. within a required operating range to ensure the quality of the end product. Each of these loops receives and internally creates disturbances that detrimentally affect the process variable, and interaction from other loops in the network provides disturbances that influence the process variable.

To reduce the effect of these load disturbances, sensors and transmitters collect information about the process variable and its relationship to some desired set point. A controller then processes this information and decides what must be done to get the process variable back to where it should be after a load disturbance occurs. When all the measuring, comparing, and calculating are done, some type of final control element must implement the strategy selected by the controller. The most common final control element in the process control industries is the control valve.

The control valve manipulates a flowing fluid, such as gas, steam, water, or chemical compounds, to compensate for the load disturbance and keep the regulated process variable as close as possible to the desired set point. Many people who talk about control valves or valves are really referring to a control valve assembly. The control valve assembly typically consists of the valve body, the internal trim parts, an actuator to provide the motive power to operate the valve, and a variety Chapter 1. Introduction to Control Valves 2 of additional valve accessories, which can include positioners, transducers, supply pressure regulators, manual operators, snubbers, or limit switches. Other chapters of this handbook supply more detail about each of these control valve assembly components. Whether it is called a valve, control valve or a control valve assembly, is not as important as recognizing that the control valve is a critical part of the control loop. It is not accurate to say that the control valve is the most important part of the loop. It is useful to think of a control loop as an instrumentation chain. Like any other chain, the whole chain is only as good as its weakest link. It is important to ensure that the control valve is not the weakest link. Following are definitions for process control, sliding-stem control valve, rotary-shaft control valve, and other control valve functions and characteristics terminology.

NOTE: Definitions with an asterisk (*) are from the ISA Control Valve Terminology draft standard S75.05 dated October, 1996, used with permission. Process Control Terminology Accessory: A device that is mounted on the actuator to complement the actuator’s function and make it a complete operating unit. Examples include positioners, supply pressure regulators, solenoids, and limit switches. Actuator*: A pneumatic, hydraulic, or electrically powered device that supplies force and motion to open or close a valve. Actuator Assembly: An actuator, including all the pertinent accessories that make it a complete operating unit. Backlash: The general name given to a form of dead band that results from a temporary discontinuity between the input and output of a device when the input of the device changes direction. Slack, or looseness of a mechanical connection is a typical example. Capacity* (Valve): The rate of flow through a valve under stated conditions.

Closed Loop: The interconnection of process control components such that information regarding the process variable is continuously fed back to the controller set point to provide continuous, automatic corrections to the process variable. Controller: A device that operates automatically by use of some established algorithm to regulate a controlled variable. The controller input receives information about the status of the process variable and then provides an appropriate output signal to the final control element. Control Loop: (See Closed Loop.) Control Range: The range of valve travel over which a control valve can maintain the installed valve gain between the normalized values of 0.5 and 2.0. Control Valve: (See Control Valve Assembly.) Control Valve Assembly: Includes all components normally mounted on the valve: the valve body assembly, actuator, positioner, air sets, transducers, limit switches, etc. Dead Band: The range through which an input signal can be varied, upon reversal of direction, without initiating an observable change in the output signal. Dead band is the name given to a general phenomenon that can apply to any device. For the valve

Where process applications require control valves which are able to withstand the effects of highly corrosive media Badger RC250 barstock valves are the ideal choice.

The Badger range of valves is available in the UK through liquids handling specialists Pump Engineering, and includes a wide range of options, such as the RC250 model.

The valves are available in a range of materials including, stainless steel, Hastelloy, Monel and titanium and will handle flows from 100 lit/hour up to 8000 lit/hour, at pressures up to 9 Bar. RC250 valves feature; Linear or equal % trims, Hastelloy C and Tantalum trims, Kynar trim Cv’s from 6.0 to 0.05 and metallic trim CV’s from 6.0 to 0.0000018. The valve is available in sizes ¼”, ½”, ¾” and 1” with NPT or wafer style connections and a  choice of Teflon CV rings or REK packing is available. Control options include pneumatic and electric actuators.

The RC250 (807) barstock model is also available in PVDF and  will therefore withstand a wide range of corrosive media occurring in water treatment, chemical feed, pH control, semiconductor and pulp & paper applications. These type of applications could involve aggressive fluids such as; sodium hypochlorite, chlorine dioxide, sulphuric acid, sodium chlorate, ammonium fluoride and hydrochloric acid, all of which can be safely handled by the RC250 PVDF valve

Emerson Process Management announces the release of the Fisher GX 3-way control valve and actuator system.  The new GX 3-way has the ability to accurately control the temperature of water, oils, steam, and other industrial fluids.  Applications include heat exchangers and lubricating skids.

The flow cavity of the GX 3-Way valve body has been engineered to provide stable flow and reduce process variability.  This linear stability is perfectly suited for temperature and pH control applications.  The GX 3-way valve is multi-faceted in its ability to cover both flow mixing (converging) and flow splitting (diverging) applications with no extra parts needed.  Unlike other 3-way valves, it features both side-port and bottom-port common trim.

The GX 3-way valve package addresses the space limitations of the OEM industry.  It meets the requirements of both EN and ASME standards.  In addition, it is available with a complete accessory package, including the FIELDVUE DVC2000 integrated digital valve controller.  The GX 3-way is rugged, reliable, and easy to select.  Internal valve trim is designed to ensure long service life and avoid unnecessary maintenance.

I am writing to support the re-election of Ron Walter for Chelan County commissioner. I know Ron from the private and public sector and have always found him caring and very open to receive constituents’ input. He assembles the facts and makes sound decisions for our county. He is an honest and conscientious man, so why consider a change?

Keith Kuechmann

Wenatchee

Largent a wise choice

I live in Douglas County but own property in Chelan County, where voters now have the unique opportunity to voice a necessary change in the commissioners’ office. Recently Ron Walter, as commissioner, sought amendment of the definition of a “winery” under the Chelan County Code, as a favor to Saint Laurent Winery, owned by Mike and Laura Mrachek. This was after a hearing examiner correctly determined that the winery failed to meet the county regulatory definitions for that type of business, and was operating improperly.

Saint Laurent has been out of compliance with several of the original approved operating conditions established by the hearing examiner over three years ago, and has made little effort to become compliant. Rather, the Saint Laurent owners decided it a wiser investment to quickly become contributors to the Walter re-election campaign. (Source: Washington Public Disclosure Commission.)

This scenario underscores what decent citizens find most distasteful (vinegar rather than wine) about our elective process: the giving of political favor in exchange for campaign money. Put another way, Walter has sought to retroactively legalize prior improper operation of Saint Laurent, while rejecting the rule of law protecting surrounding property owners.

In exchange, Walter received money from those benefitted, the Mracheks. If you condone this kind of behavior, vote to retain Mr. Walter, because you certainly have a right to expect more of the same. But if you think that more of the same isn’t a wise moral choice or good planning practice, perhaps you should vote for Chuck Largent.

Scott Kane

East Wenatchee

Recount proof

Eastern Washington voters need to remember that we actually elected Dino Rossi as governor in 2004, twice! This was an amazing accomplishment considering how far left the Puget Sound region is. This will probably be our last chance to elect Dino or any other fiscal conservative as governor to give us a chance to avoid bankruptcy. If you want to see where we are headed with four more years of one-party control, just look at California. We will be broke and their answer will always be to increase spending and raise taxes. What businesses would want to locate here? Don’t forget, Gregoire plans to convince us we need a state income tax too!

Dino Rossi is an honest man who understands how to balance a budget, not a life-long politician serving special interests.

We need a recount-proof margin of victory to keep this election from being stolen again. Call your friends and relatives, drive people to vote, whatever it takes. Eastern Washington can make a difference if we stick together and vote for the best person for governor at this dangerous time — Dino Rossi!

Scott Hudson

Moses Lake

More change, please

Please vote on Nov. 4, and I would like to encourage you to vote for the Obama/Biden ticket. I ask this so that it might help my finances. Let me explain that I have been unemployed for the last four years, mostly by choice, so that I might migrate to a warmer climate during the cold months in Washington. I could not help but be excited by Sen. Obama’s comment about “spreading the wealth around,” and I for one could use a bit of the working persons’ wealth while I lounge on the beach.

So please keep working so that I might share in the fruits of your labor. Please don’t concern yourself over Sen. Obama’s lack of world experience or knowledge of our 57 states or the corrupt past of his associates, as I am more concerned about change, that change being the change of your money to my pocket.

Ron L. Schmidt

Riverside

Stick to news

I was dismayed that The Wenatchee World chose to run a front page story about the Wenatchee teacher who resigned after drinking on the job (The World, Oct 22).

The fact that she was intoxicated at work indicates that there is a significant problem of alcoholism with her. While there is much social stigma attached to alcoholism, it is a disease. It is extremely difficult to deal with.

Anyone who has dealt with the illness, and is still dealing with it, as well as anyone who has family or friends who are dealing with it, know that it is a day-by-day struggle. It results in great anxiety and pain for all involved.

It is certainly not appropriate fodder for discussion in public.

I can only hope that The World will refrain from such publications in the future and stick to real news.

Terry Fitzpatrick

North Central WEA UniServ

It’s capitalism that made us

It continuously amazes me the number of young and older adults who think business is bad, greedy and not paying taxes.

Small and large businesses are what make the wheels go round in this country. They contribute to the gross domestic product, create jobs, pay taxes, Social Security, unemployment, workers compensation etc., and make it possible for the “service industry ” — i.e., teachers, government, medical — to even exist.

Business has acquired a bad name because of the few CEOs, mainly in the finance world who have been greedy and produce nothing, simply shuttle figures and paperwork.

The CEO of Corning for five years drew zero compensation until Corning was “back on track.” Most business compensation is based on performance, as it should be for teachers, government employees, etc.

The media tend to print the negating or exceptions, but keep in mind, if it were not for the Alcoas, Comings, GMs, etc., in this country, we all would be drawing food stamps.

Please pass this information on to your children and teachers in our schools who sometimes have no clue as to what it takes to cut their paychecks. Again, capitalism is what has made this country great and the envy of the entire world.

Tom Hohn

Wenatchee

All letters must include the author’s signature, address and telephone number. There is a 300-word limit, and all letters are subject to editing.

Send letters to The Safety Valve, Box 1511, Wenatchee, WA 98807.

NEW! Series 38R Low Cost Self-Acting Temperature Control Valves

W.E. Anderson Division of Dwyer Instruments Series 38R Self-Acting Temperature Control Valves require no external power sources and are ideal for regulating the temperature of tanks, process streams and various types of industrial equipment. The actuators are made with a rugged die-cast aluminum housing with a fully enclosed bellow assembly and internal over-range protection. Valves are offered in 1/2″ through 6″ connection sizes and 1/8″ through 6″ port sizes. The valve bodies are available in single-seated direct or reverse-acting, double-seated direct or reverse-acting, and 3-way designs with four choices of body material: bronze, cast iron, cast steel, and 316 stainless steel.

Actuators are available with or without indicating dials, or in Fail-Safe. Non-indicating actuators feature a lower profile and should be implemented where space constraints may be an issue while the indicating actuator allows the operator to verify the process temperature and aid in temperature adjustment. Fail-Safe actuators are designed to cause the valve to fail in the safe control position (open in cooling application, closed in heating application) should some accidental damage occur to the terminal system, resulting in loss of pressure charge. Also available with the Series 38R are a wide range of capillaries, bulbs, and thermowells.

Emerson Process Management announces the completion of a significant expansion of the manufacturing capabilities at its control valve manufacturing plant located at Cernay, in the Alsace region of France. The investment will enable Emerson to meet increasing demand for its Fisher® control valve ranges, in particular for the larger sizes and for special valves such as those used on turbine bypass or anti surge applications. The European market for valves has increased consistently over the last three years and the output of the Cernay factory has doubled over the same period.

The project involved the building of additional manufacturing space as well as the internal reorganisation of the production and assembly areas in line with the latest “Lean” manufacturing strategies. The new building has provided 475 square metres of additional floor space and is 9 metres tall to accommodate the large special valves. New test equipment and a new painting facility have been installed, along with an integrated customer inspection area.

The Fisher range of control valves is suitable for use in general purpose applications as well as more arduous duties. Valves sizes range from ½’’ to 24’’ for sliding stem globe valves and from 1’’ to 72’’ for rotary valves. Emerson offers low noise Whisper Trim® and anti-cavitation Cavitrol® trims as well as a complete range of exotic materials and coatings including Hastelloy, Titanium, Inconel 625, Monel and Super duplex.

The Fisher range of control valve instrumentation includes the industry leading FIELDVUE® range of digital valve controllers. The FIELDVUE controller is a key component of Emerson’s PlantWeb® digital plant architecture which networks intelligent instruments that deliver diagnostic data for predictive maintenance, leading to increased availability of production and distribution facilities.

The Cernay plant is the largest of the five Emerson facilities manufacturing Fisher control valves in Europe. Its production currently represents more than half of the total European production. Cernay is also the only European plant compliant with nuclear industry requirements and is able to deliver valves and instruments for this growing market.

DC repeater without auxiliary power
KFD0-CS-Ex1.53

1-channel, Transmission range: 0 mA … 40 mA, Low voltage drop, Accuracy 1 %, Output EEx ia IIC, Device installation permissible in zone 2, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex protection, Field circuit: 0-40 mA, Safe area: 0-40 mA, Transfer direction: to the field

Solenoid drivers
KFD2-VM-Ex1.3*

Explosion protection: Ex input

DC repeater without auxiliary power
KFD0-CS-Ex2.53

2-channel, Transmission range: 0 mA … 40 mA, Low voltage drop, Accuracy 1 %, Output EEx ia IIC, Device installation permissible in zone 2, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex protection, Field circuit: 0-40 mA, Safe area: 0-40 mA, Transfer direction: to the field

Isolated switch amplifier
KFD2-ST-Ex2

2-channel, Control circuit EEx ia IIC, 24 V DC nominal supply voltage, Reversible mode of operation, Lead breakage (LB) monitoring and short-circuit (SC) monitoring, 1 active electronic output per channel, EMC acc. to NAMUR NE 21, Input: NAMUR sensor, Rated voltage: 20 … 35 V DC, Output: Transistor, Explosion protection: Ex input

Isolated switch amplifier
KFD2-SOT-Ex1

1-channel, Control circuit EEx ia IIC, 24 V DC nominal supply voltage, Reversible mode of operation, Lead breakage (LB) monitoring and short-circuit (SC) monitoring, 1 passive electronic output, EMC acc. to NAMUR NE 21, Input: NAMUR sensor, Rated voltage: 20 … 35 V DC, Output: Optocoupler, Explosion protection: Ex input

Thermometer resistance repeater
KFD2-RR-Ex1

1-channel, Input EEx ia IIC, Device installation permissible in zone 2, 24 V DC supply voltage, Accuracy 0.1 %, EMC acc. to NAMUR NE 21, Rated voltage: 20 … 35 V DC, Explosion protection: Ex protection, Field circuit: Resistance, Safe area: Resistance, Transfer direction: to the control system

DC repeater without auxiliary power
KFD0-CS-Ex2.52

Transmission range: 4 mA … 20 mA, Accuracy 0.1 %, Input EEx ia IIC, Device installation permissible in zone 2, EMC acc. to NAMUR NE 21, Rated voltage: loop powered, Explosion protection: Ex protection, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: To the control system

Isolated switch amplifier
KFD2-ST-Ex1

1-channel, Control circuit EEx ia IIC, 24 V DC nominal supply voltage, Reversible mode of operation, Lead breakage (LB) monitoring and short-circuit (SC) monitoring, 2 active electronic outputs, EMC acc. to NAMUR NE 21, Input: NAMUR sensor, Rated voltage: 20 … 35 V DC, Output: Transistor, Explosion protection: Ex input

Switch Amplifier
KFD2-SOT-Ex2

2-channel isolated barrier, 24 V DC supply (Power Rail), Isolated dry contacts or NAMUR inputs, Isolated passive transistor output, Line fault detection (LFD), Reversible mode of operation, Input: NAMUR sensor, Rated voltage: 20 … 35 V DC, Output: Optocoupler, Explosion protection: Ex input

DC repeater without auxiliary power
KFD0-CS-Ex1.52

Transmission range: 4 mA … 20 mA, Accuracy 0.1 %, Input EEx ia IIC, Device installation permissible in zone 2, EMC acc. to NAMUR NE 21, Rated voltage: loop powered, Explosion protection: Ex protection, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: To the control system

Isolated switch amplifier
KFD2-SR2-2.2S

2-channel, Reversible mode of operation, 1 relay output per channel with 2 NO contatcs each, EMC acc. to NAMUR NE 21, LB/SC monitoring, LB/SC collective error message via Power Rail, Usable up to SIL2 acc. to IEC 61508

Electrode relay
KFD2-ER-1.W.LB

1-channel, Relay for conductive limit value detection, Minimum/maximum control, On/off control system, Open/closed circuit current principle switchable, LB monitoring, LB collective error message via Power Rail, EMC acc. to NAMUR NE 21

Isolated switch amplifier
KFD2-SR2-Ex2.2S

2-channel, Control circuit EEx ia IIC, Device installation permissible in zone 2, Reversible mode of operation, 1 relay output per channel with 2 NO contatcs each, EMC acc. to NAMUR NE 21, LB/SC monitoring, LB/SC collective error message via Power Rail, Up to SIL2 acc. to IEC 61508, Input: NAMUR sensor, Rated voltage: 20 … 30 V DC, Output: relay, SIL/IEC 61508, Explosion protection: Ex input

Electrode relay
KFD2-ER-Ex1.W.LB

1-channel, Relay for conductive limit value detection, Minimum/maximum control, On/off control system, Open/closed circuit current principle switchable, LB monitoring, LB collective error message via Power Rail, EMC acc. to NAMUR NE 21

Solenoid driver
KFD2-VM-Ex1.35.L

1-channel, 3 logic inputs, Service bridging of the output by front connector, Output EEx ia IIC, 24 V DC nominal supply voltage, LED signalling of the switch state, EMC acc. to NAMUR NE 21, Input: with prelogic, Rated voltage: 20 … 30 V DC, Explosion protection: Ex-Output, Output rated operating current: 17 mA

Transmitter power supply
KFD2-CR4-Ex2

2-channel, Input EEx ia IIC, U o = 25.2 V, Device installation permissible in zone 2, 24 V DC supply voltage, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA, Explosion protection: Ex input

Repeater
KFD0-CS-Ex2.54

2-channel isolated barrier, 24 V DC supply (loop powered), SMART fire alarm input, Current input 1 mA … 20 mA, Rated voltage: loop powered, Explosion protection: Ex protection, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: to the field

Isolated switch amplifier
KFD2-SR-Ex2

2-channel, Control circuit EEx ia IIC, 24 V DC rated operational voltage, Reversible mode of operation, Lead breakage (LB) monitoring and short-circuit (SC) monitoring, 1 signal output per channel with 1 NO, Input: NAMUR sensor, Rated voltage: 20 … 35 V DC, Output: relay, Explosion protection: Ex input

Isolated switch amplifier
KFD2-SR-Ex1.4S.LK

1-channel, Control circuit EEx ia IIC, 24 V DC supply voltage, Reversible mode of operation, Adjustable pulse extension, Lead breakage (LB) monitoring and short-circuit (SC) monitoring, 4 signal outputs, 1 NO contact each, Error message output, NO contact, Input: NAMUR sensor, Rated voltage: 20 … 35 V DC, Output: relay, Explosion protection: Ex-Input

Solenoid driver
KFD0-SD2-Ex2.1245

2-channel, Output EEx ia IIC, Up to SIL3 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex-Output, Output rated operating current: 45 mA

Isolated switch amplifier
KFD2-SRT-Ex1

1-channel, Control circuit EEx ia IIC, 24 V DC nominal supply voltage, Reversible mode of operation, Lead breakage (LB) monitoring and short-circuit (SC) monitoring, 1 active electronic output, 1 relay output, EMC acc. to NAMUR NE 21, Input: NAMUR sensor, Rated voltage: 20 … 35 V DC, Output: Relay + Transistor, Explosion protection: Ex input

Label carrier
KFD0-LC1-XXX

For additional labeling (measuring station numbers, signal names etc.) of the K-modules in the control cabinet , Length up to 500 mm

Label carrier
KFD0-LC1-YYY

For additional labeling (measuring station numbers, signal names etc.) of the K-modules in the control cabinet , Length 510 mm … 1000 mm

Electrode relay
KFD2-ER-1.6

1-channel, Relay for conductive limit value detection, Adjustable sensitivity, Measuring circuit in acc. with VDE 0100 part 410 ‘Funktionskleinspannung’, Minimum/maximum control, Open/closed circuit current principle switchable, EMC acc. to NAMUR NE 21, This model replaces KHA6-ER-1.* and HR-122620

Electrode relay
KFD2-ER-1.5

1-channel, Relay for conductive limit value detection, Adjustable sensitivity, Measuring circuit in acc. with VDE 0100 part 410 ‘Funktionskleinspannung’, Minimum/maximum control, Open/closed circuit current principle switchable, EMC acc. to NAMUR NE 21, This model replaces KHA6-ER-1.* and HR-122620

Overspeed/underspeed monitor
KFD2-DWB-1.D

1-channel, 24 V DC supply (Power Rail), Dry contacts or NAMUR inputs, Frequency up to 12 kHz/720 krpm, 2 relay contact outputs, Start-up override, Line fault detection, Up to SIL2 acc. to IEC 61508, Function (P2P): Limit value, Output: 2 x 1 Changeover contact, SIL/IEC 61508, Display

Overspeed/underspeed monitor
KFD2-DWB-Ex1.D

1-channel, 24 V DC supply (Power Rail), Dry contacts or NAMUR inputs, Frequency up to 5 kHz/300 krpm, 2 relay contact outputs, Start-up override, Line fault detection, Up to SIL2 acc. to IEC 61508, Function (P2P): Limit value, Output: 2 x 1 Changeover contact, SIL/IEC 61508, Display, Explosion protection: Ex input

Isolated switch amplifier, timer relay
KFD2-DU-Ex1.D

1-channel, Control circuit EEx ia IIC, Switching amplifier with timing, Maximum input frequency 80 Hz, 1 relay output, 1 potential-free electronic output, Pulse divider up to 1 kHz, Time function: one shot output, one shot output retrigger, pulse extension, pulse limitation , on-delay, off-delay, auxiliary switch, Time range of the output function from 10 ms … 60 min, Reset function, Parameterisation via control panel, Lead breakage (LB) monitoring and short-circuit (SC) monitoring, Input: NAMUR sensor

Transmitter power supply
KFD2-CR4-2

2-channel, Device installation permissible in zone 2, 24 V DC supply voltage, EMC acc. to NAMUR NE 21, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA

Transmitter Power Supply
KFD2-CR4-1

1-channel signal conditioner, 24 V DC supply (Power Rail), 2-wire transmitters or current sources, Output 0/4 mA … 20 mA, Accuracy 0.1 %, Up to SIL2 acc. to IEC 61508, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA, Input, current source

Temperature Trip Value
KFD2-GU-Ex1

1-channel isolated barrier, 24 V DC supply (Power Rail), Thermocouple, RTD, voltage or current input, 2 relay contact outputs, Programmable high/low alarm, Configurable by PACTware TM, Sensor burnout detection, Rated voltage: 19 … 35 V DC, Output: 2 x 1 Changeover contact, Explosion protection: Ex input

Transmitter supply isolator
KFD2-CR-1.300

1-channel, 24 V DC supply voltage, Galvanic isolated measuring circuits, Output: allowable load <= 1 kOmega, EMC acc. to NAMUR NE 21, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, Output signal: 0 … 20 mA / 4 … 20 mA, Input, current source

Transmitter power supply
KFD2-CR4-Ex1

1-channel, Input EEx ia IIC, U o = 25.4 V, Device installation permissible in zone 2, 3-way galvanic isolation, 24 V DC supply voltage, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA, Input, current source, Explosion protection: Ex input

Transmitter supply isolator
KFD2-CRG-Ex1.D

1-channel, Analogue input 0/4 mA … 20 mA EEx ia IIC, Analogue output 0/4 mA … 20 mA, 2 relay outputs, Each relay output individually parameterisable as high/low alarm, Lead breakage (LB) monitoring and short-circuit (SC) monitoring, Parameterisation via PC or control panel, Up to SIL2 acc. to IEC 61508, Input: 3-wire transmitter, Rated voltage: 20 … 30 V DC, SIL/IEC 61508, Output signal: 0 … 20 mA, Limit alarm relay, Display, Input, current source, Explosion protection: Ex input

SMART transmitter power supply
KFD2-STC4-Ex1.H

1-channel, Input EEx ia IIC, U o = 27.2 V, Very high field voltage, Galvanically isolated output, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508 in preparation, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA (overload > 25mA), HART transfer, Input, current source, Explosion protection: Ex input

Segment coupler
KFD2-BR-1.MOD

Segment coupler for MODBUS RTU, Segment coupler for a non-instrinsically safe MODBUS RTU segment, MODBUS RTU IEC 61158-2, 31.25 kBit/s, Master independent, Up to 32 devices can be connected to the MODBUS RTU segment , 24 V DC rated operational voltage, Removable terminals and Power Rail

Current/voltage repeater
KFD2-CD-Ex1.32

1-channel, Output EEx ia IIC, 24 V DC supply voltage, Device installation permissible in zone 2, Conversion of current/voltage or voltage/current, Elevation/Suppression of the ‘life zero’, Accuracy 0.1 %, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Explosion protection: Ex protection, Field circuit: 0(4)-20 mA, Safe area: 0(4)-20 mA, Transfer direction: to the field

SMART transmitter power supplies
KFD2-STC4-Ex2-Y72195

2-channel, Input EEx ia IIC, U o = 25.2 V, Device installation in Zone 2, 24 V DC supply voltage, EMC acc. to NAMUR NE 21, Output as current sink, Up to SIL2 acc. to IEC 61508, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA (overload > 25 mA), HART transfer, Output, current sink, Explosion protection: Ex input

Solenoid Driver
KFD0-SD2-Ex1.1045

1-channel isolated barrier, 24 V DC supply (loop powered), Current limit 45 mA at 10 V DC, Up to SIL3 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex-Output, Output rated operating current: 45 mA

Strain Gauge Converter
KFD2-WAC2-1.D

1-channel signal conditioner, 24 V DC supply (Power Rail), Strain gauge input, Output 0 mA … +- 20 mA or 0 V … +- 10 V, Relay contact output, Programmable high/low alarm, RS 485 interface, Line fault detection (LFD), Input: DMS bridges, Rated voltage: 20 … 35 V DC, Output: 4-20 mA, Limit alarm relay, Display

Solenoid driver
KFD2-VD-Ex1.1560

1-channel, Output EEx ib IIC, 24 V DC supply voltage, Logic input to switch the field voltage, LED signalling of the switch state, Input: with prelogic, Rated voltage: 20 … 35 V DC, Explosion protection: Ex-Output, Output rated operating current: 60 mA

SMART transmitter power supply
KFD2-STC4-Ex1.2O.H

1-channel, 24 V DC supply (Power Rail), 2- or 3-wire HART transmitter, Dual 4 mA … 20 mA output, Terminals with test points, High field voltage 17.6 V DC, Up to SIL2 acc. to IEC 61508 in preparation, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA (overload > 25mA), HART transfer, Dual output, Input, current source, Explosion protection: Ex input

Strain Gauge Converter
KFD2-WAC2-Ex1.D

1-channel isolated barrier, 24 V DC supply (Power Rail), Strain gauge input, Output 0 mA … +- 20 mA or 0 V … +- 10 V, Relay contact output, Programmable high/low alarm, RS 485 interface, Line fault detection (LFD), Input: DMS bridges, Rated voltage: 20 … 35 V DC, Output: 4-20 mA, Limit alarm relay, Display, Explosion protection: Ex input

Solenoid drivers
KFD2-VD-Ex1.1835

1-channel, Output EEx ib IIC, 24 V DC nominal supply voltage, Logic input for connection and disconnection, LED signalling of the switch state, Input: with prelogic, Rated voltage: 20 … 35 V DC, Explosion protection: Ex-Output, Output rated operating current: 35 mA

Electrode relay
KFD2-ER-2.W.LB

2-channel, Relay for conductive limit value detection, Minimum/maximum control, On/off control system, Open/closed circuit current principle switchable, LB monitoring, LB collective error message via Power Rail, EMC acc. to NAMUR NE 21

Solenoid driver
KFD2-SD-Ex1.17

1-channel, Device installation in Zone 2, Output EEx ia IIC, Current limit: 65 mA, Up to SIL3 acc. to IEC 61508, Input: without prelogic, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex-Output, Output rated operating current: 65 mA

Repeater
KFD0-CS-Ex1.54-Y207411

1-channel isolated barrier, 24 V DC supply (loop powered), SMART fire alarm input, Current input 1 mA … 20 mA, Rated voltage: loop powered, Explosion protection: Ex protection, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: to the field

Solenoid driver
KFD0-SD2-Ex1.1065

1-channel, Output EEx ia IIC, Up to SIL3 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex-Output, Output rated operating current: 65 mA

Repeater
KFD0-CS-Ex2.54-Y207412

2-channel isolated barrier, 24 V DC supply (loop powered), SMART fire alarm input, Current input 1 mA … 20 mA, Rated voltage: loop powered, Explosion protection: Ex protection, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: to the field

DC repeater without auxiliary power
KFD0-CS-1.50

Galvanic isolated measuring circuits, Accuracy 0.1 %, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: to the field

Solenoid driver
KFD0-SD2-Ex1.1180

1-channel, Output EEx ia IIB, Up to SIL3 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex-Output, Output rated operating current: 80 mA

Relay Module
KFD0-RSH-1-Y191196

1-channel signal conditioner, 24 V DC supply (loop powered), Fail-safe relay contact output, Logic input 16 V DC … 30 V DC, non-polarized, Special version with test pulse suppression for Trident system from Triconex, Up to SIL3 acc. to IEC 61508

DC repeater without auxiliary power
KFD0-CS-2.50

Galvanic isolated measuring circuits, Accuracy 0.1 %, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: to the field

SMART transmitter power supplies
KFD2-STC3-Ex1

1-channel, Input EEx ia IIC, U 0 = 25.2 V, 24 V DC nominal supply voltage, SMART capable up to 40 kHz (-1dB), EMC acc. to NAMUR NE 21, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, Output signal: 4 … 20 mA , max. load 1000 Ohm , for HART >= 230 Ohm, HART transfer, Explosion protection: Ex input

SMART transmitter power supplies
KFD2-STV3-Ex1-1

1-channel, Input EEx ia IIC, U 0 = 25.2 V, 24 V DC nominal supply voltage, SMART capable up to 40 kHz (-1dB), EMC acc. to NAMUR NE 21, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, Output signal: 1 … 5 V , internal resistance approx. 305 Ohm, HART transfer, Explosion protection: Ex input

SMART transmitter power supplies
KFD2-STV3-Ex1-2

1-channel, Input EEx ia IIC, U 0 = 25.2 V, 24 V DC nominal supply voltage, SMART capable up to 40 kHz (-1dB), EMC acc. to NAMUR NE 21, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, Output signal: 2 … 10 V , internal resistance approx. 305 Ohm, HART transfer, Explosion protection: Ex input

Transmitter power supply
KFD2-STV4-Ex2-2

2-channel, Input EEx ia IIC, U o = 25.2 V, Device installation permissible in zone 2, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/2 … 10 V, HART transfer, Explosion protection: Ex input

Place Holder Barrier
KFD0-LGH-Y34868

IS K-System place holder module, Housing width 20 mm, Marshalling for field and control side circuits, No electrical function: empty housing

Current repeater
KFD2-CD2-Ex1

1-channel, Output EEx ia IIC, Accuracy 0.1 %, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: 10 … 35 V DC, Explosion protection: Ex protection, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: To the field

RS 232 repeater
KFD2-FF-Ex2.RS232

RS 232 transmission, Corresponds to EIA standard RS 232C and RS 232D, Field circuit EEx ia IIC, Bi-directional transmission, Rated voltage: 15 … 35 V DC, Explosion protection: Ex protection, Field circuit: RS 232, Safe area: RS 232, Transfer direction: to the field

SMART repeater
KFD2-SCD2-Ex1.LK

1-channel, Lead breakage (LB) monitoring and short-circuit (SC) monitoring via Power Rail, Suitable for HART communication (galvanically isolated), Accuracy 0.1 %, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: 10 … 35 V DC, SIL/IEC 61508, HART transfer, Explosion protection: Ex protection, Field circuit: 4-20 mA, HART, Safe area: 4-20 mA, HART, Transfer direction: to the field

Temperature converter
KFD2-UT2-2-1

2-channel, 2 inputs/2 outputs freely configurable, 3-way galvanic isolation, Accuracy +- 0.1 %, Resistance sensors acc. to IEC 751 or GOST 50353-92, Thermocouples acc. to IEC 584-1, GOST 50431-92 or GOST P85.585-2001, 2-wire resistance 0 Omega … 20 kOmega, 3-wire potentiometer 0.8 kOmega … 20 kOmega, Voltage signals between -100 mV and +100 mV, Internal or external cold junction compensation, Sensor burnout and short-circuit monitoring, Collective error message via Power Rail, Input: Temperature

Temperature converter
KFD2-UT2-1-1

1-channel, 3-way galvanic isolation, Accuracy +- 0.1 %, Adjustment option of temperature measuring range for Pt100, Ni100 in 2-, 3- or 4-wire versions, Adjustment option of thermocouple (B, E, J, K, L, N, R, S or T), 2-wire resistance 0 Omega … 20 kOmega, 3-wire potentiometer 0.8 kOmega … 20 kOmega, Internal or external cold junction compensation, Sensor burnout monitoring for thermocouples, Sensor burnout and short-circuit monitoring (SC) for Pt100, Online adjustments via serial interface to PC

SMART transmitter power supply
KFD2-STV4-Ex1-1

1-channel, Device installation permissible in zone 2, Input EEx ia IIC, U o = 25.4 V, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/1 … 5 V, HART transfer, Input, current source, Explosion protection: Ex input

Transmitter power supply
KFD2-STV4-Ex1.2O-2

1-channel, Device installation permissible in zone 2, Input EEx ia IIC, U o = 25.4 V, 2 galvanically isolated outputs, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/2 … 10 V, HART transfer, Input, current source, Explosion protection: Ex input

Transmitter power supply
KFD2-STV4-Ex2-1

2-channel, Input EEx ia IIC, U o = 25.2 V, Device installation permissible in zone 2, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/1 … 5 V, HART transfer, Explosion protection: Ex input

SMART transmitter power supply
KFD2-STV4-Ex1-2

1-channel, Device installation permissible in zone 2, Input EEx ia IIC, U o = 25.4 V, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/2 … 10 V, HART transfer, Input, current source, Explosion protection: Ex input

SMART transmitter power supply, output current sink
KFD2-STC4-Ex1.2O-Y122582

1-channel, Device installation permissible in zone 2, Input EEx ia IIC, U o = 25.4 V, 2 galvanically isolated outputs, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA (overload > 25mA), HART transfer, Dual output, Output, current sink, Input, current source, Explosion protection: Ex input

SMART transmitter power supply
KFD2-STV4-Ex1.2O-1

1-channel, Device installation permissible in zone 2, Input EEx ia IIC, U o = 25.4 V, 2 galvanically isolated outputs, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/1 … 5 V, HART transfer, Dual output, Input, current source, Explosion protection: Ex input

SMART transmitter power supply, output current sink
KFD2-STC4-Ex1-Y122583

1-channel, Device installation permissible in zone 2, Input EEx ia IIC, U o = 25.4 V, Galvanically isolated output, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA (overload > 25mA), HART transfer, Output, current sink, Input, current source, Explosion protection: Ex input

Signal converter for current/voltage
KFD0-CC-Ex1

1-channel, Input EEx ia IIC, Loop powered 12 V DC … 35 V DC, Galvanic isolated measuring circuits, Current range (0/4 mA … 20 mA) or voltage range (0/1 V … 5 V, 0/2 V … 10 V) adjustable via DIP switch, fine tuning (approx. 1%) of the span and zero point possible via DIP switch, Fine adjustment (approx. 1 %) of the span and of the zero point is possible using a potentiometer, Output: 4 mA … 20 mA, EMC acc. to NAMUR NE 21, Input: Current/voltage, Rated voltage: 12 … 35 V DC loop powered

Temperature converter
KFD2-UT2-Ex1

1-channel, 3-way galvanic isolation, Resistance sensors acc. to IEC 751 or GOST 50353-92, Thermocouples acc. to IEC 584-1, GOST 50431-92 or GOST P85.585-2001, 2-wire resistance 0 Omega … 20 kOmega, 3-wire potentiometer 0.8 kOmega … 20 kOmega, Voltage signals between -100 mV and +100 mV, Input: Temperature, Rated voltage: 20 … 30 V DC, Output: 4-20 mA, Explosion protection: Ex input

Voltage repeater
KFD2-VR-Ex1.19

1-channel, Input EEx ia IIC, 24 V DC supply voltage, EMC acc. to NAMUR NE 21, Rated voltage: 20 … 35 V DC, Explosion protection: Ex protection, Field circuit: 0-10 V, Safe area: 0-10 V, Transfer direction: to the control system

Transformer isolated barrier for potentiometer
KFD2-PT2-Ex1**

1-channel, Input EEx ia IIC, 24 V DC supply voltage, Current or voltage output, Accuracy 0.05 %, EMC acc. to NAMUR NE 21, Input: Resistance, Rated voltage: 20 … 35 V DC, Output: 0-10 V, Explosion protection: Ex-Input

Signal converter with trip value
KFD2-USC-1.D

1-channel, 24 V DC supply (Power Rail), Scaleable current or voltage input, Current or voltage output, Relay contact output, Programmable via control panel, Line fault detection

DC repeater without auxiliary power
KFD0-CS-2.51P

Polarity reversal protected, Accuracy 1 %, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex protection, Field circuit: 0-40 mA, Safe area: 0-40 mA, Transfer direction: To the field

Temperature converter with trip relays
KFD2-GUT-1.D

1-channel, Input for voltage 0 V … 1 V, 0 V … 10 V, -100 mV … +100 mV, Input RTD: Pt100, Pt500, Pt1000, Ni100,Ni1000 2-, 3- and 4-wire, Input potentiometer 800 Ohm … 20 kOhm 2-, 3- and 5-wire, Input thermocouple type B, E, J, K, L, N, R, S, T, Redundant input for thermocouple for plausibility check, Sensor burnout monitoring, 2 relay outputs, Each relay output individually parameterisable as high/low alarm, Analogue output 0/4 mA … 20 mA, Manual adjustments or adjustments via PC

Solenoid driver, power amplifier
KFD2-SL-4

4-channel, Control via logic inputs, 24 V DC supply voltage, Output current: 600 mA/channel (resistive, inductive, capacitive load), All channels can be simultaneously turned off via a galvanically isolated input., Up to SIL2 acc. to IEC 61508, Input: with prelogic, Rated voltage: 20 … 30 V DC, SIL/IEC 61508, Explosion protection: No Ex-protection, Fault message output, Output rated operating current: 600 mA

HART isolator
KFD0-SI-Ex4

4-channel, Field circuits intrinsically safe EEx ia IIC, Device installation permissible in the safe area or in zone 2, Couples HART signals in the field circuit (bi-directional)

Isolated switch amplifier
KFD2-SH-Ex1.T.OP

1-channel, Control circuit EEx ia IIC, Lead breakage (LB) monitoring and short-circuit (SC) monitoring, 1 safety-related active electronic output SIL3 acc. to IEC/EN 61508 and acc. to DIN VDE 0660, part 209, Product classification in accordance with ISO 13849-1 (EN 954-1 category 3), 1 relay output repeats the state of the input circuit, 1 error output with 1 NO contact, EMC acc. to NAMUR NE 21, Up to SIL3 acc. to IEC 61508, Input: NAMUR sensor, Rated voltage: 20 … 30 V DC, Output: Transistor

Signal converter for thermocouples
KFD0-TT-Ex1

1-channel, Input EEx ia IIC, Loop powered 12 V DC … 35 V DC, Galvanic isolated measuring circuits, Thermocouple types E, J, K, N, R, S, T, Lead monitoring, Output voltage is linearly proportionate to input voltage, Internal cold junction, Span and zero point adjustable, EMC acc. to NAMUR NE 21, Input: Thermocouple, Rated voltage: 12 … 35 V DC loop powered, Output: 4-20 mA, Output, current sink, Explosion protection: Ex-Input

DC repeater without auxiliary power
KFD0-CS-Ex1.50P

Output EEx ia IIC, Device installation in Zone 2, Polarity reversal protected, Accuracy 0.1 %, EMC acc. to NAMUR NE 21, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex protection, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: to the field

TIB for Voltage
KFD2-PT2-Ex1-4

Explosion protection: Ex input

Transformer isolated barrier for potentiometer
KFD2-PT2-Ex1-5

1-channel, Input EEx ia IIC, 24 V DC nominal supply voltage, Current output 4 mA … 20 mA, Accuracy 0.05 %, EMC acc. to NAMUR NE 21

Voltage repeater
KFD2-VR4-Ex1.26

1-channel, Input EEx ia IIC, 24 V DC supply voltage, Transfer of AC signals possible, 2-wire sensor with current supply, 3-wire sensor with voltage supply, Rated voltage: 20 … 35 V DC, Explosion protection: Ex protection, Field circuit: 0-20 V, Safe area: 0-20 V

Voltage repeater
KFD2-VR-Ex1.500m

1-channel, Input EEx ia IIC, 24 V DC supply voltage, EMC acc. to NAMUR NE 21, Rated voltage: 20 … 35 V DC, Explosion protection: Ex protection, Field circuit: 0-500 mV, Safe area: 0-500 mV, Transfer direction: To the control system

Relay module
KFD0-RSH-1

1-channel, Loop powered, Input non-polarised, Output in fail-safe technology, Relay LED status indication, Up to SIL3 acc. to IEC 61508

Temperature converter
KFD2-UT2-2

2-channel, 1 input/2 outputs freely configurable, 3-way galvanic isolation, Resistance sensors acc. to IEC 751 or GOST 50353-92, Thermocouples acc. to IEC 584-1, GOST 50431-92 or GOST P85.585-2001, 2-wire resistance 0 Omega … 20 kOmega, 3-wire potentiometer 0.8 kOmega … 20 kOmega, Voltage signals between -100 mV and +100 mV, Internal or external cold junction compensation, Sensor burnout and short-circuit monitoring, Collective error message via Power Rail, Input: Temperature

SMART transmitter power supply
KFD2-STV4-1-1

1-channel, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/1 … 5 V, HART transfer, Input, current source

Power feed module with bus terminals
KFD2-EB2.RPI

24 V DC supply voltage, Device installation in Zone 2, Supply current <= 4 A, Fault signal output with adjustable mode of operation, Bus access via terminals, EMC acc. to NAMUR NE 21

Temperature converter
KFD2-UT2-1

1-channel, 3-way galvanic isolation, Resistance sensors acc. to IEC 751 or GOST 50353-92, Thermocouples acc. to IEC 584-1, GOST 50431-92 or GOST P85.585-2001, 2-wire resistance 0 Omega … 20 kOmega, 3-wire potentiometer 0.8 kOmega … 20 kOmega, Voltage signals between -100 mV and +100 mV, Internal or external cold junction compensation, Sensor burnout and short-circuit monitoring, Collective error message via Power Rail, Online adjustments via serial interface to PC, EMC acc. to EN 61326

Power Rail power feed module for redundant supply, with bus terminals
KFD2-EB2.R4A.RPI

24 V DC supply voltage, Device installation in Zone 2, Supply current <= 4 A, Bus access via terminals, Redundant supply, Fault signal output with adjustable mode of operation, EMC acc. to NAMUR NE 21

Relay Module
KFD0-RSH-1-Y1

1-channel signal conditioner, 24 V DC supply (loop powered), Fail-safe relay contact output, Logic input 16 V DC … 30 V DC, non-polarized, Special version with test pulse suppression for Tricon system from Triconex, Up to SIL3 acc. to IEC 61508

Isolated switch amplifier
KFD2-SRA-Ex4

4-channel, Control circuit Ex ia IIC, 24 V DC supply voltage, Reversible mode of operation, 4 relay outputs, 1 NO contact per channel, grouped into single-pole pairs, 50 % less wiring 2:1, Input: NAMUR sensor, Rated voltage: 19 … 30 V DC, Output: relay, 2:1 Method, Explosion protection: Ex input

SMART repeater
KFD0-SCS-Ex1.55

1-channel, Field circuit EEx ib IIC, Loop powered, Transmission range: 4 mA … 20 mA, Lead monitoring, Suitable for HART communication (galvanically isolated), Universal application for transmitters, position controllers and I/P converters, Only 5 V voltage drop, Test sockets for HART, EMC acc. to NAMUR NE 21, Rated voltage: loop powered, HART transfer, Explosion protection: Ex protection, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: to the field

Power Rail power feed module for redundant supply, with bus terminals
KFD2-EB2.R4A.B

24 V DC supply voltage, Device installation permissible in zone 2, Supply current <= 4 A, Bus access via terminals, Redundant supply, Fault signal output with adjustable mode of operation, EMC acc. to NAMUR NE 21

Temperature converter
KFD2-UT2-Ex2-1

2-channel, 1 input/2 outputs freely configurable, 3-way galvanic isolation, Resistance sensors acc. to IEC 751 or GOST 50353-92, Thermocouples acc. to IEC 584-1, GOST 50431-92 or GOST P85.585-2001, 2-wire resistance 0 Omega … 20 kOmega, 3-wire potentiometer 0.8 kOmega … 20 kOmega, Voltage signals between -100 mV and +100 mV, Input: Temperature, Rated voltage: 20 … 30 V DC, Output: 0-5 V, Explosion protection: Ex input

Power feed module
KFD2-EB2

24 V DC supply voltage, Device installation permissible in zone 2, Supply current <= 4 A, Fault signal output with adjustable mode of operation, EMC acc. to NAMUR NE 21

Isolated Repeaters
KFD2-VR-Ex500m.R

Explosion protection: Ex input

Solenoid driver
KFD2-SL2-Ex1.LK

1-channel, Output EEx ia IIC, Lead monitoring: red LED, flashing, signal on Power Rail and output error message de-energised, 24 V DC supply voltage, Output current max. 45 mA, Logic inputs, non-polarised, Removable terminals, EMC acc. to NAMUR NE 21, LED accord. to NAMUR NE 44, Up to SIL2 acc. to IEC 61508, Input: with prelogic, Rated voltage: 20 … 30 V DC, SIL/IEC 61508, Explosion protection: Ex-Output, Fault message output

Isolated Repeaters
KFD2-VR-Ex500m.L

Explosion protection: Ex input

Solenoid driver
KFD2-SL2-Ex2

2-channel, Output Ex ia IIC, Ex ia D , Lead monitoring: LED flashing red and signal via Power Rail, Output current max. 45 mA, Logic inputs, non-polarised, EMC acc. to NAMUR NE 21, LED accord. to NAMUR NE 44, Up to SIL2 acc. to IEC 61508, Input: with prelogic, Rated voltage: 20 … 30 V DC, SIL/IEC 61508, Explosion protection: Ex-Output, Fault message output, Output rated operating current: 45 mA

Solenoid driver
KFD2-SL2-Ex1

1-channel, Output Ex ia IIC, Ex ia D , 24 V DC supply voltage, Output current max. 45 mA, Logic input non-polarised, EMC acc. to NAMUR NE 21, Lead monitoring: LED flashing red and signal via Power Rail, LED accord. to NAMUR NE 44, Up to SIL2 acc. to IEC 61508, Input: with prelogic, Rated voltage: 20 … 30 V DC, SIL/IEC 61508, Explosion protection: Ex-Output, Fault message output, Output rated operating current: 45 mA

SMART repeater
KFD2-SCD2-1.LK

1-channel, Lead breakage (LB) monitoring and short-circuit (SC) monitoring via Power Rail, Suitable for HART communication (galvanically isolated), Accuracy 0.1 %, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508

Solenoid driver
KFD2-SL2-Ex1.B

1-channel, Output Ex ia IIC, Ex ia D , 24 V DC supply voltage, Output current max. 45 mA, Logic input non-polarised, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: with prelogic, Rated voltage: 20 … 30 V DC, SIL/IEC 61508, Explosion protection: Ex-Output, Output rated operating current: 45 mA

SMART repeater
KFD2-SCD2-2.LK

2-channel, Lead breakage (LB) monitoring and short-circuit (SC) monitoring via Power Rail, Suitable for HART communication (galvanically isolated), Accuracy 0.1 %, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508

Temperature converter with trip relays
KFD2-GUT-Ex1.D

1-channel, Input EEx ia IIC, Input for voltage 0 V … 1 V, 0 V … 10 V, -100 mV … +100 mV, Input RTD: Pt100, Pt500, Pt1000, Ni100,Ni1000 2-, 3- and 4-wire, Input potentiometer 800 Ohm … 20 kOhm 2-, 3- and 5-wire, Input thermocouple type B, E, J, K, L, N, R, S, T, Redundant input for thermocouple for plausibility check, Sensor burnout monitoring, 2 relay outputs, Each relay output individually parameterisable as high/low alarm, Analogue output 0/4 mA … 20 mA, Input: Temperature

Solenoid driver
KFD2-SL2-Ex2.B

2-channel, Output Ex ia IIC, Ex ia D , 24 V DC supply voltage, Output current max. 45 mA, Logic inputs, non-polarised, EMC acc. to NAMUR NE 21, LED accord. to NAMUR NE 44, Up to SIL2 acc. to IEC 61508, Input: with prelogic, Rated voltage: 20 … 30 V DC, SIL/IEC 61508, Explosion protection: Ex-Output, Output rated operating current: 45 mA

Solenoid driver
KFD2-SD-Ex1.36

1-channel, Output EEx ia IIB, Device installation in Zone 2, Current limit: 80 mA, Up to SIL3 acc. to IEC 61508, Input: without prelogic, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex-Output, Output rated operating current: max. 80 mA

Signal converter for resistor
KFD0-RC-Ex1

1-channel, Input EEx ia IIC, Loop powered 12 V DC … 35 V DC, Galvanic isolated measuring circuits, Resistance input, 3-wire connection for lead compensation, Lead breakage monitoring, EMC acc. to NAMUR NE 21, Input: Resistance, Rated voltage: 12 … 35 V DC loop powered, Output: 4-20 mA, Output, current sink, Explosion protection: Ex input

Power Rail power feed module for redundant supply, with bus terminals
KFD2-EB.MAR.RPI

24 V DC supply voltage, Supply current <= 2 A, Bus access via terminals, Redundant supply, Fault signal output with adjustable mode of operation, EMC acc. to NAMUR NE 21, For applications on ships

Transformer isolated barrier for potentiometer
KFD2-PT2-Ex1-4

1-channel, Input EEx ia IIC, 24 V DC nominal supply voltage, Current output 0 mA … 20 mA, Accuracy 0.05 %, EMC acc. to NAMUR NE 21

Voltage repeater
KFD2-VR-Ex1.18

1-channel, Input EEx ia IIC, 24 V DC supply voltage, EMC acc. to NAMUR NE 21, Rated voltage: 20 … 35 V DC, Explosion protection: Ex protection, Field circuit: 0-12 V, Safe area: 0-12 V, Transfer direction: to the control system

Accessories
KFD0-LC-1

Signal converter for Pt100
KFD0-TR-Ex1

1-channel, Input EEx ia IIC, Loop powered 12 V DC … 35 V DC, Galvanic isolated measuring circuits, Input for Pt100 2- or 3-wire, Sensor burnout monitoring, Output, thermally linear, Span can be adjusted from 25 °C … 800 °C, with linearisation from 20 °C … 375 °C, EMC acc. to NAMUR NE 21, Input: Resistance, Rated voltage: 12 … 35 V DC loop powered, Output: 4-20 mA, Output, current sink, Explosion protection: Ex-Input

Isolated switch amplifier
KFD2-SOT2-Ex1.N

1-channel, Control circuit EEx ia IIC, Device installation permissible in zone 2, Reversible mode of operation, Output: signal output (passive electronic output), EMC acc. to NAMUR NE 21, LB/SC collective error message via Power Rail, Signal output NAMUR compatible, Up to SIL2 acc. to IEC 61508, Input: NAMUR sensor, Rated voltage: 20 … 30 V DC, Output: Optocoupler, SIL/IEC 61508, Explosion protection: Ex input

Standstill controller
KFD2-SR2-2.W.SM

1-channel standstill controller, Rotation direction detection or start-up override selectable, 2 relay outputs, Input frequency <= 2 kHz, Diagnosis LEDs for rotation detection, signal below the trip value, operating voltage and hardware error

Current repeater
KFD2-CD2-Ex2

2-channel, Output EEx ia IIC, Device installation permissible in zone 2, Accuracy 0.1 %, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: 10 … 35 V DC, Explosion protection: Ex protection, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: To the field

Solenoid driver
KFD0-SD2-Ex1.10100

1-channel, Output EEx ia IIC, Up to SIL3 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex-Output, Output rated operating current: 100 mA

Transformer isolated barrier for potentiometer
KFD2-PT2-Ex1-1

1-channel, Input EEx ia IIC, 24 V DC nominal supply voltage, Voltage output 0 V … 5 V, Accuracy 0.05 %, EMC acc. to NAMUR NE 21, Rated voltage: 20 … 35 V DC, Explosion protection: Ex input

HART Multiplexer Slave
KFD0-HMS-16

16-channel, No external power required, HART field device inputs, Used with HART Multiplexer Master KFD2-HMM-16, Up to SIL3 acc. to IEC 61508

Place Holder Barrier
KFD0-LGH-GN

Non-IS K-System place holder module, Housing width 20 mm, Marshalling for field and control side circuits, Jumper configurable

Transmitter power supply
KFD2-CR4-Ex1.2O

1-channel, Device installation permissible in zone 2, Input EEx ia IIC, U o = 25.4 V, 2 galvanically isolated outputs, 24 V DC supply voltage, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA, Dual output, Input, current source, Explosion protection: Ex input

SMART transmitter power supplies
KFD2-STC4-Ex2-Y132953

2-channel, Input EEx ia IIC, U o = 25.2 V, Device installation permissible in zone 2, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA (overload > 25mA), HART transfer, Explosion protection: Ex input

SMART transmitter power supplies
KFD2-STC4-2

2-channel, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508

SMART transmitter power supplies
KFD2-STV4-2-1

2-channel, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508

Isolated switch amplifier
KFD2-SR2-Ex2.W

2-channel, Control circuit EEx ia IIC, Reversible mode of operation, 1 signal output with 1 changeover contact per channel, EMC acc. to NAMUR NE 21, LB/SC monitoring, LB/SC collective error message via Power Rail, Up to SIL2 acc. to IEC 61508, Input: NAMUR sensor, Rated voltage: 20 … 30 V DC, Output: relay, SIL/IEC 61508, Explosion protection: Ex input

Solenoid drivers
KFD2-VM-Ex1.32.O

Explosion protection: Ex input

Isolated Switch Amplifier
KFD2-SOT2-EX2.IO-Y181008

2-channel, Control circuit EEx ia IIC, Device installation in Zone 2, Reversible mode of operation, One passive electronic output per channel, EMC acc. to NAMUR NE 21, LB/SC monitoring, LB/SC collective error message via Power Rail, Input: NAMUR sensor, Rated voltage: 20 … 30 V DC, Output: Optocoupler, Separate outputs, Explosion protection: Ex input

Isolated switch amplifier
KFD2-SR2-Ex1.W.LB

1-channel, Control circuit EEx ia IIC, Reversible mode of operation, Output I: signal output (changeover contact), Output II: optionally signal output/fault signal, EMC acc. to NAMUR NE 21, LB/SC monitoring, LB/SC collective error message via Power Rail, Up to SIL2 acc. to IEC 61508, Input: NAMUR sensor, Rated voltage: 20 … 30 V DC, Output: relay, SIL/IEC 61508, Explosion protection: Ex input

Isolated switch amplifier
KFD2-SR2-Ex1.W

1-channel, Control circuit EEx ia IIC, Reversible mode of operation, 1 relay output with 1 changeover contact, EMC acc. to NAMUR NE 21, LB/SC monitoring, LB/SC collective error message via Power Rail, Up to SIL2 acc. to IEC 61508, Input: NAMUR sensor, Rated voltage: 20 … 30 V DC, Output: relay, SIL/IEC 61508, Explosion protection: Ex input

Voltage Repeater
KFD2-VR-Ex1.12

1-channel isolated barrier, 24 V DC supply (Power Rail), Voltage input 0 V … 9 V, Voltage output 0 V … 9 V, Rated voltage: 20 … 35 V DC, Explosion protection: Ex protection

SMART transmitter power supplies
KFD2-STC4-Ex2

2-channel, Input EEx ia IIC, U o = 25.2 V, Device installation permissible in zone 2, 24 V DC supply voltage, SMART capable up to 7.5 kHz (-3 dB), EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA (overload > 25mA), HART transfer, Explosion protection: Ex input

Signal converter for Pt100
KFD0-TR-1

1-channel, Loop powered 12 V DC … 35 V DC, Galvanic isolated measuring circuits, Input for Pt100 2- or 3-wire, Sensor burnout monitoring, Output, thermally linear, Span can be adjusted from 25 °C … 800 °C, with linearisation from 20 °C … 375 °C, EMC acc. to NAMUR NE 21, Input: Resistance, Rated voltage: 12 … 35 V DC loop powered, Output: 4-20 mA, Output, current sink, Explosion protection: No Ex-protection

Solenoid driver
KFD2-VM-Ex1.35

1-channel, 2 logic inputs, Output EEx ib IIC, 24 V DC supply voltage, LED signalling of the switch state, EMC acc. to NAMUR NE 21, Input: with prelogic, Rated voltage: 20 … 30 V DC, Explosion protection: Ex-Output, Output rated operating current: 17 mA

Signal converter for current/voltage
KFD0-CC-1

1-channel, Loop powered 12 V DC … 35 V DC, Galvanic isolated measuring circuits, Current range (0/4 mA … 20 mA) or voltage range (0/1 V … 5 V, 0/2 V … 10 V) adjustable via DIP switch, fine tuning (approx. 1%) of the span and zero point possible via DIP switch, Fine adjustment (approx. 1 %) of the span and of the zero point is possible using a potentiometer, Output: 4 mA … 20 mA, EMC acc. to NAMUR NE 21, Input: Current/voltage, Rated voltage: 12 … 35 V DC loop powered, Output: 4-20 mA

Strain Gauge Converter
KFD2-WAC2-Ex1.D-Y189512

1-channel isolated barrier, 24 V DC supply (Power Rail), Strain gauge input, Output 0 mA … +- 20 mA or 0 V … +- 10 V, Relay contact output, Programmable high/low alarm, RS 485 interface, Low response time, Line fault detection (LFD), Input: DMS bridges, Rated voltage: 20 … 35 V DC, Output: 4-20 mA, Limit alarm relay, Display, Explosion protection: Ex input

HART Loop Converter
KFD2-HLC-Ex1.D.2W

1-channel isolated barrier, 24 V DC supply (Power Rail), Input HART with transmitter supply, 2 relay outputs, 3 analog outputs 4 mA … 20 mA, Parameterization via control panel, Input: 3-wire transmitter, Rated voltage: 19 … 30 V DC, HART transfer, Limit alarm relay, Display, Output, current sink, Input, current source, Explosion protection: Ex input

Standstill controller
KFD2-SR2-Ex2.W.SM

1-channel, Control circuit EEx ia IIC, Additional input for rotation direction detecion or start-up override, 2 relay outputs, Input frequency <= 2 kHz, EMC acc. to NAMUR NE 21, Diagnosis LEDs for rotation detection, signal below the trip value, operating voltage and hardware error, LB/SC monitoring, Collective error message via Power Rail, Up to SIL2 acc. to IEC 61508

Voltage repeater
KFD2-VR2-Ex1.50m

1-channel, Input EEx ia IIC, 24 V DC supply voltage, EMC acc. to NAMUR NE 21, Selectable lead breakage monitoring, Rated voltage: 15 … 30 V DC, Explosion protection: Ex protection, Field circuit: 0-50 mV, Safe area: 0-50 mV, Transfer direction: to the control system

HART Loop Converter
KFD2-HLC-Ex1.D

1-channel isolated barrier, 24 V DC supply (Power Rail), Input HART with transmitter supply, 3 analog outputs 4 mA … 20 mA, Parameterization via control panel, Input: 3-wire transmitter, Rated voltage: 19 … 30 V DC, HART transfer, Display, Output, current sink, Input, current source, Explosion protection: Ex input

Signal converter for thermocouples
KFD0-TT-1

1-channel, Loop powered 12 V DC … 35 V DC, Galvanic isolated measuring circuits, Thermocouple types E, J, K, N, R, S, T, Lead monitoring, Output voltage is linearly proportionate to input voltage, Internal cold junction, Span and zero point adjustable, EMC acc. to NAMUR NE 21, Input: Thermocouple, Rated voltage: 12 … 35 V DC loop powered, Output: 4-20 mA, Output, current sink, Explosion protection: No Ex-protection

Signal converter for current/voltage
KFD0-VC-1.10

1-channel, Loop powered 12 V DC … 35 V DC, Galvanic isolated measuring circuits, Output: 4 mA … 20 mA, Fine tuning for span and zero point, EMC acc. to NAMUR NE 21, Input: Current/voltage, Rated voltage: 12 … 35 V DC loop powered, Output: 4-20 mA, Output, current sink, Explosion protection: No Ex-protection

HART Loop Converter
KFD2-HLC-Ex1.D.4S

1-channel isolated barrier, 24 V DC supply (Power Rail), Input HART with transmitter supply, 4 relay outputs (NO), 3 analog outputs 4 mA … 20 mA, Parameterization via control panel, Input: 3-wire transmitter, Rated voltage: 19 … 30 V, HART transfer, Limit alarm relay, Display, Output, current sink, Input, current source, Explosion protection: Ex input

SMART transmitter power supply
KFD2-STC3-Ex1

1-channel, Input EEx ia IIC, U o = 25.2 V, 24 V DC supply voltage, SMART capable up to 40 kHz (-1dB), EMC acc. to NAMUR NE 21, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, Output signal: 4 … 20 mA , max. load 1000 Omega , for HART >= 230 Omega, HART transfer, Explosion protection: Ex input

SMART transmitter power supply
KFD2-STV3-Ex1-2

1-channel, Input EEx ia IIC, U o = 25.2 V, 24 V DC supply voltage, SMART capable up to 40 kHz (-1dB), EMC acc. to NAMUR NE 21, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, Output signal: 2 … 10 V , internal resistance approx. 305 Omega, HART transfer, Explosion protection: Ex input

Solenoid driver
KFD2-SL2-Ex1.LK

1-channel, Output EEx ia IIC, Lead monitoring: red LED, flashing, signal on Power Rail and output error message de-energised, 24 V DC supply voltage, Output current max. 45 mA, Logic inputs non-polarized, Removable terminals, EMC acc. to NAMUR NE 21, LED accord. to NAMUR NE 44, Up to SIL2 acc. to IEC 61508, Input: with prelogic, Rated voltage: 20 … 30 V DC, SIL/IEC 61508, Explosion protection: Ex-Output, Fault message output

SMART transmitter power supply
KFD2-STV3-Ex1-1

1-channel, Input EEx ia IIC, U o = 25.2 V, 24 V DC supply voltage, SMART capable up to 40 kHz (-1dB), EMC acc. to NAMUR NE 21, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, Output signal: 1 … 5 V , internal resistance approx. 305 Omega, HART transfer, Explosion protection: Ex input

Converter
KFD2-UT-Ex1-1

1-channel, Input EEx ia IIC, 24 V DC supply voltage, Accuracy +- 0.1 %, Adjustment option of temperature measuring range for Pt100, Ni100 in 2-, 3- or 4-wire versions, Adjustment option of thermocouple (B, E, J, K, L, N, R, S or T), Freely definable characteristic curve for resistance 0 Omega … 400 Omega and voltage -50 mV … +150 mV, Internal or external cold junction compensation, Sensor burnout monitoring for thermocouples, Sensor burnout and short-circuit monitoring (SC) for Pt100

SMART Transmitter Power Supply
KFD2-STC4-Ex1

1-channel isolated barrier, 24 V DC supply (Power Rail), 2-wire SMART transmitters or current sources, Output 4 mA … 20 mA, Terminals with test points, Up to SIL2 acc. to IEC 61508, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, SIL/IEC 61508, Output signal: 0/4 … 20 mA (overload > 25 mA), HART transfer, Input, current source, Explosion protection: Ex input

DC repeater without auxiliary power
KFD0-CS-Ex2.51P

Output EEx ia IIC, Device installation permissible in zone 2, Polarity reversal protected, Accuracy 1 %, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex protection, Field circuit: 0-40 mA, Safe area: 0-40 mA, Transfer direction: to the field

DC repeater without auxiliary power
KFD0-CS-Ex2.50P

2-channel, Field circuit EEx ia IIC, Device installation permissible in zone 2, Accuracy 0.1 %, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex protection, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: to the field

SMART transmitter power supplies
KFD2-STC1-Ex1

1-channel, Input EEx ia IIC, U o = 25.5 V, 24 V DC nominal supply voltage, SMART capable up to 12 kHz (-1 dB), EMC acc. to NAMUR NE 21, Input: 2-wire transmitter, Rated voltage: 20 … 35 V DC, Output signal: 4 … 20 mA , max. load 500 Ohm, with HART >= 230 Ohm, HART transfer, Explosion protection: Ex input

Electrode relay
KFD2-ER-1.6

Relay module
KFD0-RO-Ex2

2-channel, Control circuit EEx ia IIC, Outputs for switching intrinsically safe circuits up to 60 V, Device installation permissible in zone 2, Inputs non-polarised, LED status indicator of relays, Input: 24 V DC, Output: relay, Explosion protection: Ex input

Transmitter power supply
KFD2-CR4-1.2O

1-channel, 2 galvanically isolated outputs, 24 V DC supply voltage, EMC acc. to NAMUR NE 21

Electrode relay
KFD2-ER-1.5

HART Multiplexer Master
KFD2-HMM-16

16-channel, 24 V DC supply (Power Rail), HART field device inputs, Up to 15 KFD0-HMS-16 slave units can be connected, Up to SIL3 acc. to IEC 61508

Isolated switch amplifier
KFD2-ST2-Ex1.LB

1-channel, Control circuit EEx ia IIC, Device installation permissible in zone 2, Reversible mode of operation, Output I: signal output (active electronic output) Output II: either signal output or error message (active electronic output), EMC acc. to NAMUR NE 21, LB/SC monitoring, LB/SC collective error message via Power Rail, Up to SIL2 acc. to IEC 61508, Input: NAMUR sensor, Rated voltage: 20 … 30 V DC, Output: Transistor, SIL/IEC 61508, Explosion protection: Ex input

Current/voltage repeater
KFD2-CD-1.32

1-channel, 24 V DC supply voltage, Conversion of current/voltage or voltage/current, Elevation of the ‘life zero’, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: 20 … 35 V DC within the supply tolerance, SIL/IEC 61508, Field circuit: 0(4)-20 mA, Safe area: 0(4)-20 mA, Transfer direction: to the field

Trip amplifier
KFD2-GU-1

1-channel, 24 V DC supply voltage, 2 switch outputs, High/low alarm selectable, Mode of operation adjustable, Adjustment option of 0 V … 10 V, 0 mA … 20 mA, of Pt100, Ni100 or thermocouple (B, E, J, K, L, N, R, S or T), Internal or external cold junction compensation, Sensor burnout monitoring for thermocouples, Sensor burnout and short-circuit monitoring for Pt100, current and voltage, Online adjustments via serial interface to PC, EMC acc. to NAMUR NE 21, Rated voltage: 20 … 35 V DC

DC repeater without auxiliary power
KFD0-CS-Ex1.51P

Output EEx ia IIC, Device installation permissible in zone 2, Polarity reversal protected, Accuracy 1 %, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508, Rated voltage: loop powered, SIL/IEC 61508, Explosion protection: Ex protection, Field circuit: 0-40 mA, Safe area: 0-40 mA, Transfer direction: to the field

Trip amplifier
KFD2-GU-Ex1

1-channel, Input EEx ia IIC, 2 relay outputs, High/low alarm settable, Mode of operation adjustable, Inputs for voltage (0 V … 10 V), current (0 mA … 20 mA) RTDs (Pt100, Ni100) thermocouples (B, E, J, K, L, N, R, S, or T), Sensor burnout monitoring for thermocouples, Sensor burnout and short-circuit monitoring for Pt100, Online adjustments via serial interface to PC, EMC acc. to NAMUR NE 21, Rated voltage: 19 … 35 V DC, Output: 2 x 1 Changeover contact, Explosion protection: Ex input

Converters
KFD2-FAC-1

Explosion protection: No Ex-protection

Temperature Trip Value
KFD2-GU-1

1-channel signal conditioner, 24 V DC supply (Power Rail), Thermocouple, RTD, voltage or current input, 2 relay contact outputs, Programmable high/low alarm, Configurable by PACTware TM, Sensor burnout detection, Rated voltage: 19 … 35 V DC, Output: 2 x 1 Changeover contact

Transmitter supply isolator
KFD2-CR-Ex1.30300

1-channel, Input EEx ia IIC, U o = 26 V, 24 V DC supply voltage, Output: allowable load max. 1 kOmega, EMC acc. to NAMUR NE 21, Input: 3-wire transmitter, Rated voltage: 20 … 35 V DC, Output signal: 0 … 20 mA, Input, current source, Explosion protection: Ex input

Switch Amplifier
KFD2-SOT2-Ex2

2-channel isolated barrier, 24 V DC supply (Power Rail), Dry contact or NAMUR inputs, Passive transistor output, non-polarized, Line fault detection (LFD), Reversible mode of operation, Up to SIL2 acc. to IEC 61508, Input: NAMUR sensor, Rated voltage: 20 … 30 V DC, Output: Optocoupler, SIL/IEC 61508, Explosion protection: Ex input

Isolated switch amplifier
KFD2-SOT2-Ex2.IO

2-channel, Control circuit EEx ia IIC, Device installation permissible in zone 2, Reversible mode of operation, 1 passive transistor output, depolarized per channel, EMC acc. to NAMUR NE 21, LB/SC monitoring, LB/SC collective error message via Power Rail, Up to SIL2 acc. to IEC 61508, Input: NAMUR sensor, Rated voltage: 20 … 30 V DC, Output: Optocoupler, SIL/IEC 61508, Separate outputs, Explosion protection: Ex input

Isolated switch amplifier
KFD2-SH-Ex1

1-channel, Control circuit EEx ia IIC, Lead breakage (LB) monitoring and short-circuit (SC) monitoring, 1 safety-related relay output SIL3 acc. to IEC/EN 61508 and acc. to DIN VDE 0660, part 209, Product classification in accordance with ISO 13849-1 (EN 954-1 category 3), 1 relay output repeats the state of the input circuit, 1 passive electronic output, error message, EMC acc. to NAMUR NE 21, Up to SIL3 acc. to IEC 61508, Input: NAMUR sensor, Rated voltage: 20 … 35 V DC, Output: relay, SIL/IEC 61508

Repeater
KFD0-CS-Ex1.54

1-channel isolated barrier, 24 V DC supply (loop powered), SMART fire alarm input, Current input 1 mA … 20 mA, Rated voltage: loop powered, Explosion protection: Ex protection, Field circuit: 4-20 mA, Safe area: 4-20 mA, Transfer direction: to the field

SMART transmitter power supply
KFD2-STC4-1.2O

1-channel, 2 galvanically isolated outputs, 24 V DC supply voltage, EMC acc. to NAMUR NE 21, Up to SIL2 acc. to IEC 61508

SMART transmitter power supply
KFD2-STC4-1

1-channel, Galv