Emerson Fisher 4195K Data Sheet
Contents
1. Feedback Option TO RESET TO BELLOWS NOZZLE OUTPUT TO PROPORTIONAL SUPPLY BELLOWS PRESSURE EXTERNAL FEEDBACK TO OUTPUT OF HIGH OR LOW SELECT RELAY 1529294 NOZZLE PRESSURE coooo SUPPLY PRESSURE W RESET PRESSURE NNW SELECT RELAY OUTPUT 54 OUTPUT PRESSURE 47A0975 A A3342 1 11 Product Bulletin 34 5 4195K July 2014 Installation 4195K gauge pressure controllers can be shipped alone for a separate installation or for installation on a control valve actuator The controllers can also be mounted on a pipe stand on a wall or in a panel When a controller is mounted on an actuator and a positioner is not used the controller will usually be opposite the supply regulator as shown in figure 5 If a positioner is used the supply regulator can be mounted on the actuator casing The controller must be installed so the vent points down Basic controller dimensions are shown in figure 6 Dimensions for specific mounting configurations are shown in figure 7 Ordering Information When ordering a 4195K controller specify Application 1 Description of the service such as throttling or on off 2 Pressure range composition and temperature of process fluid 3 Ambient temperature Construction Refer to the specifications and to the Construction Features section Carefully review each specification and feature indicating your choice whenever a selection is to be made Refer to table 1 fo2. Positive 3 to 15 psig 6 psig 12 psig 30 inch Hg 20 psig 30 psig pressure 0 to 15 psig 7 5 psig 15 psig 30 inch Hg 20 psig 30 psig 0 to 20 psig 10 psig 20 psig 30 inch Hg 25 psig 37 5 psig 6 to 30 psig 12 psig 24 psig 30 inch Hg 30 psig 45 psig 0 to 30 psig 15 psig 30 psig 30 inch Hg 35 psig 52 5 psig A 5 to 0 inch Hg 2 5inchHg 5inch Hg 10 inch Hg 5 psig 7 5 psig ku tag 10 to 0 inch Hg SinchHg 10inchHg l4inchHg 7psig 10 5 psig acuum 20 to 0 inch Hg 10inchHg 20inchHg 30inchHg 15 psig 22 5 psig 30 to 0 inch Hg 15inchHg 30inchHg 30inchHg 20 psig 30 psig 30 to 30 inch wc 40inchwc 60inchwc 10 inch Hg 5 psig 7 5 psig 5 inch Hg to 2 5 psig 2 5 psig 5 psig 14 inch Hg 7 psig 10 5 psig 10 inch Hg to 5 psig 5 psig 10 psig 30 inch Hg 15 psig 22 5 psig Compound r z 15 inch Hg to 7 5 psig 7 5 psig 15 psig 30 inch Hg 20 psig 30 psig 20 inch Hg to 10 psig 10 psig 20 psig 30 inch Hg 25 psig 37 5 psig 30 inch Hg to 15 psig 15 psig 30 psig 30 inch Hg 35 psig 52 5 psig 1 Minimum or maximum span or any span in between may be positioned anywhere within the operating range For example if a 0 to 350 mbar 0 to 5 psig sensing element is used and the minimum span of 175 mbar 2 5 psig is set the process indication can be calibrated to a range of 340 mbar to 203 mbar 10 inch Hg to 6 inch Hg 0 to 172 mbar 0 to 2 5 psig 172 to 345 mbar 2 5 to 5 psig 305 to 480 mbar 4 5 to 7 psig or any value between minimum and ma
3. mmn uam ane X 4195KAM X mes WERE ee f X 4195KAME X Bes aa X X 4195KB ses X Ben diem 4195KBE EET X Exe X 4195KBF sos X SES iE X us 4195KBFE E X ces E X irr X 4195KBM ELS X A Bes sem X 255 4195KBME ARE X RAE BE X X 4195KBFM Ree X ms E X X EE 4195KBFME Re X mes X X X 4195KC s ees X Rees 4195KCE ves a X E EE zu X 4195KCF mes Esc X S X E ore 4195KCFE Ps sens X Zee X set X 4195KCM mes X m X meds 4195KCME mes X oe 2s X X 4195KCFM s E X ase X X SE 4195KCFME RSS Bes X ggs X X X 4195KS mes E X E iain 4195KSE RES mes ERE X set gis X 4195KSM sew vai Ses X mme X ps 4195KSME ze E e X SE X X 1 Reverse acting constructions are designated by the suffix letter R in the type number Product Bulletin 34 5 4195K July 2014 Features Easy Maintenance Simple design allows fast easy maintenance and minimal spare parts inventory Easy Adjustment Adjusting the set point the zero and span of the process pointer and switching between direct and reverse action are accomplished quickly and without special tools Additionally the set point and proportional band can be adjusted with no interaction between the two adjustments Application Versatility Either a Bourdon tube or capsular input element is available to control a wide range of positive pressures vacuum pressures or compound pressures Mounting Versatility A 4195K controller can be mounted
4. 4195K Pressure Controllers D200050X012 Product Bulletin 34 5 4195K July 2014 Fisher 4195K Gauge Pressure Indicating Controllers Fisher 4195K gauge pressure indicating controllers show process pressure and set point on an easy to read process scale The controllers compare process pressure with an operator adjusted set point and delivers a pneumatic signal to a control element so that process pressure changes toward the set point Controller types are available for proportional only W5660 1 W5663 1 YOKE MOUNTED CONTROLLER Notes 2 gt Controller components are indicated in figure 1 proportional plus reset proportional plus reset plus rate and differential gap for on off control 4195K controllers are used in industries where accurate pressure control and process monitoring are required Unless otherwise noted all NACE references are to NACE MR0175 2002 INTERIOR OF A FISHER 4195KBME CONTROLLER 1 gt An internal cover protects the proportional band adjustment mechanism In this photograph the cover has been removed es EMERSON www Fisher com Process Management Product Bulletin 34 5 4195K July 2014 Specifications Available Configurations See table 1 Process Sensor Range Input Signal Lower and Upper Range Limits As shown in tables 2 and 5 Maximum Allowable Pressure As shown in tables 2 and 5 Process Scale Standard scale is matched to the range of the sensin
5. IPE PIPESTAND MOUNTING EN 84 d 3 29 doi 63 pu TOP VIEW TOP VIEW 36A9759 A 9 31 36A9761 B REAR VIEW DIMENSIONS OF PANEL CUTOUT REAR VIEW mm PANEL MOUNTING WALL MOUNTING INCH B1473 3 Product Bulletin 4195K Pressure Controllers 34 5 4195K D200050X012 July 2014 Product Bulletin 34 5 4195K 4195K Pressure Controllers July 2014 D200050X012 Neither Emerson Emerson Process Management nor any of their affiliated entities assumes responsibility for the selection use or maintenance of any product Responsibility for proper selection use and maintenance of any product remains solely with the purchaser and end user Fisher is a mark owned by one of the companies in the Emerson Process Management business unit of Emerson Electric Co Emerson Process Management Emerson and the Emerson logo are trademarks and service marks of Emerson Electric Co All other marks are the property of their respective owners The contents of this publication are presented for informational purposes only and while every effort has been made to ensure their accuracy they are not to be construed as warranties or guarantees express or implied regarding the products or services described herein or their use or applicability All sales are governed by our terms and conditions which are available upon request We reserve the right to modify or improve the designs or specifications of such products at any time without notice Emerson Proc
6. L SWITCH AUTO MANUAL STATION SET POINT INDICATOR PROCESS PRESSURE INDICATOR 3 INPUT ELEMENT BOURDON TUBE REMOTE SET POINT ASSEMBLY W3439 bct PROPORTIONAL BAND ADJUSTMENT 1 2 gt ZERO ADJUSTMENT RELAY POINTER SPAN ADJUSTMENT W5660 2 SUPPLY PRESSURE GAUGE ADJUSTABLE RELIEF VALVE ANTI RESET WINDUP OUTPUT PRESSURE GAUGE SET POINT 3 SPAN ADJUSTMENT x d E S RESET ADJUSTMENT mw PROPORTIONAL PLUS RESET CONTROLLERS ONLY INPUT ELEMENT CAPSULAR ELEMENT RESET ADJUSTMENT FOR PROPORTIONAL PLUS 05994 RESET PLUS RATE CONTROLLERS Notes 1 White portion of proportional band adjustment enables direct controller action black portion enables reverse controller action 2 gt For the process pointer 3 2 Input element is a bourdon tube or a capsular element as shown in inset depending on input range See tables 2 and 5 Product Bulletin 34 5 4195K July 2014 Principle of Operation Refer to the schematic diagrams in figures 2 3 and 4 Refer to table 1 for a complete description of type number suffixes Proportional Only Controllers 4195KA The input element is connected to the process pointer and to the flapper by connecting links As the process pressure increases in a direct acting controller the flapper moves toward the nozzle restricting flow through the nozzle and increasing nozzle pressure When this occurs relay action increas
7. Oto 60 55 70 0 90 103 Oto 100 76 100 0 135 155 Oto 160 160 200 0 270 310 Psig Psig Psig In Hg Psig Psig Standard Material Oto 30 15 30 30 42 48 0 to 60 30 60 30 84 96 Oto 100 50 100 30 140 160 Oto 200 100 200 30 280 320 0 to 300 150 300 30 420 480 ae Oto 600 300 600 0 840 960 224000 0 to 1000 750 1000 0 1300 1500 0 to 1500 1100 1500 0 1950 2250 0 to 3000 2200 3000 0 3900 4500 0 to 5000 3700 5000 0 6000 7000 1 Minimum or maximum span or any span in between may be positioned anywhere within the operating range For example if a 0 to 2 bar 0 to 30 psig sensing element is used and the minimum span of 1 bar W 5 psig is set the process indication can be calibrated to a range of 1 to 0 bar 30 in Hg to 0 psig 0 to 1 bar 0 to 15 psig 1 to 2 bar 15 to 30 psig 2 to 3 bar 27 to 42 psig or any value between minimum and maximum values of operating range 2 Travel stops should be used when the maximum or minimum process pressure will be 5 over or under the calibrated range For example a 0 to 2 bar 0 to 30 psig sensing element is calibrated for 0 7 to 2 bar 10 to 30 psig the desired range The minimum expected pressure is 0 psig and the maximum expected pressure is 2 8 bar 40 psig Travel stops must be used to prevent excessive overtravel and undertravel since the maximum allowable overpressure and underpressure is higher than 5 of the 1 4 bar 20 psig span which is 70 mbar 1 psig 3 Bourdon tube without travel stops may be pre
8. PERATING MATERIAL STANDARD RANGES Min Max Min Max LIMIT 0 to 150 mbar 100 mbar 160 mbar 350 mbar 350 mbar 510 mbar 0 to 400 mbar 350 mbar 700 mbar 1 bar 1 bar 1 5 bar 0 to 0 6 bar 0 35 bar 0 7 bar 1 bar 1 bar 1 5 bar N 0 2 to 1 bar 0 4 bar 0 8 bar 1 bar 1 4 bar 2 bar Positive Oto 1 bar 0 5 bar 1 bar bar 1 4 bar 2 bar pressure Oto 1 4 bar 0 7 bar 1 4 bar bar 1 7 bar 2 5 bar Oto 1 6 bar 1 bar 2 bar bar 2 4 bar 3 5 bar 0 4 to 2 bar 0 8 bar 1 6 bar bar 2 bar 3 bar 0 to 2 bar 1 bar 2 bar bar 2 4 bar 3 5 bar 150 to 0 mbar 85 mbar 170 mbar 350 mbar 350mbar 510 mbar Metric 340 to 0 mbar 170 mbar 340 mbar 480 mbar 480 mbar 724 mbar units Vacuum 400 to 0 mbar 350 mbar 700 mbar bar 1 bar 1 5 bar 0 6 to 0 bar 0 35 bar 0 7 bar bar 1 bar 1 5 bar 1 to 0 bar 0 5 bar 1 bar bar 1 4 bar 2 bar 50 to 100 mbar 100 mbar 160 mbar 350 mbar 350mbar 510 mbar 175 to 175 mbar 175 mbar 350 mbar 480 mbar 480 mbar 724mbar 150 to 250 mbar 350 mbar 700 mbar bar 1 bar 1 5 bar 0 2 to 0 4 bar 0 35 bar 0 7 bar bar 1 bar 1 5 bar Compound 0 4 to 0 6 bar 0 5 bar 1 bar 1 bar 1 4 bar 2 bar N09902 0 6 to 0 8 bar 0 7 bar 1 4 bar 1 bar 1 7 bar 2 5 bar Nickel Alloy 1 to 0 6 bar 1 bar 2 bar 1 bar 2 4 bar 3 5 bar 1 to 1 bar 1 bar 2 bar bar 2 4 bar 3 5 bar 0 to 60 inch wc 40inchwc 60inchwc_ 10 inch Hg 5 psig 7 5 psig 0 to 5 psig 2 5 psig 5 psig 14 inch Hg 7 psig 10 5 psig Oto 10 psig 5 psig 10 psig 30 inch Hg 15 psig 22 5 psig
9. T POINT N CONNECTED HERE FEEDBACK NS aM INPUT ELEMENT MOTION q FLAPPER PIVOT CONNECTED HERE DIRECTACTION ur CONNECTING QUADRANT MOTION LINK FLAPPER DETAIL r OUTPUT PRESSURE s TO FINAL CONTROL FLAPPER ELEMENT NOZZLE RELAY SUPPLY r PRESSURE O RESET TO NOZZLE PROPORTIONAL ONLY RESET t i _ gt OUTPUT PRESSURE i lt TOFINALCONTROL TO OUTPUT EU ata ELEMENT PROPORTIONAL x BELLOWS RELAY RELAY SUPPLY PRESSURE PROPORTIONAL PLUS RESET amie CONTROL earn PROPORTIONAL PLUS RESET CONTROL KEHNA WITH ANTI RESET WINDUP PEINS S y TO FINAL CONTROL SUPPLY PRESSURE RESET BELLOWS ELEMENT OUTPUT PRESSURE ESSE NOZZLE PRESSURE RELAY GREY RESET PRESSURE SUPPLY PRESSURE ISA TO pyy PROPORTIONAL TO NOZZLE QA PRESSURE TONOZZLE DIFFERENTIALGAP CONTROL PROPORTIONAL BELLOWS H 4 TORESET UE OUTPUT PRESSURE ae BELLOWS To 477 TOFINAL CONTROL PROPORTIONAL ELEMENT RELAY BELLOWS RELAY RATE VALVE PRESSURE RESET VALVE 46A9764 C C0756 2 PROPORTIONAL PLUS RESET PLUS RATE CONTROL DIFFERENTIAL RELIEF VALVE SUPPLY PRESSURE RATE VALVE RESET VALV PROPORTIONAL PLUS RESET PLUS RATE CONTROL WITH ANTI RESET WINDUP Product Bulletin 34 5 4195K July 2014 controller to respond to the change quickly with high gain but not long enough for the high gain to cause instability Then the low gain provided by the proportional action keeps the system stable Finally reset action slowly increase
10. UT PRESSURE Y TO FINAL CONTROL _ ELEMENT RELAY OUTPUT PRESSURE JEE SUPPLY PRESSURE E MANUAL LOADER OUTPUT PRESSURE SUPPLY PRESSURE 48A5230 A A2927 2 Anti Reset Windup Option Suffix Letter F Anti reset windup is available for all 4195KB and KC controllers and is designated by the letter F in the type number The differential relief valve operates when the difference between the proportional bellows pressure and the reset bellows pressure reaches a predetermined value Anti reset windup reduces overshoot of the process pressure that can result from a large or prolonged deviation from set point External Feedback Option External feedback is available for all 4195KB controllers Controllers with this option have an external connection on the bottom of the controller case see figure 6 This connection breaks the positive feedback reset loop inside the controller and brings it outside see figure 4 The connection allows the positive feedback loops of two controllers primary and secondary to be tied together when the controllers are used in an override application When connected the secondary controller reset pressure tracks the primary controller output pressure minimizing reset windup in the secondary controller Product Bulletin 34 5 4195K July 2014 MANUAL LOADER MANUAL LOADER KNOB MANUAL POSITION AUTO MANUAL Y SWITCH OUTPUT PRESSURE TO FINAL CONTROL ELEMENT Figure 4 Schematic of External
11. al Station Option Suffix Letter E A controller with the auto manual option designated by the letter E in the type number has piping on the output side of the relay as shown in figure 3 Supply pressure to the relay is also applied to the manual loader The manual loader functioning as a regulator applies pressure to one side of the plastic tube and to the auto manual switch Output pressure from the relay registers on the other side of the plastic tube as well as in the auto manual switch When the auto manual switch is in the MANUAL position the manual loader output is channeled through the auto manual switch and becomes the controller output When the auto manual switch is in the AUTO position the relay output is channeled through the switch to become the controller output Before the auto manual switch is operated the relay output must equal the manual loader output to avoid bumping the process Adjusting the set point varies the pressure on the left hand side of the plastic tube Adjusting the manual loader knob varies the pressure on the right hand side of the plastic tube When the pressures are equal the metal ball is centered in the tube and is held in place by a small magnet Pressure imbalance forces the ball to one end of the tube where it forms a seal blocking air flow through the tube 4195K Pressure Controllers D200050X012 Figure 3 Schematic of Auto Manual Station AUTOMATIC POSITION OUTP
12. directly on the actuator or it can mount on a pipestand wall or in a panel Vibration Resistance The simple design and low mass of internal parts allow a 4195K controller to withstand the vibration levels encountered in most plant environments High Visibility Display Two red pointers on a 114 mm 4 1 2 inch long white on black scale show process pressure and deviation from set point at a glance Two other gauges monitor supply pressure and output pressure Low Air Gas Consumption The relay and nozzle design reduces the steady state consumption rate to as low as 0 09 m3 hr 3 5 scfh less than the 6 scfh requirement set for the oil and gas industry by the US Environmental Protection Agency New Source Performance Standards Subpart OOOO EPA HQ QAR 2010 0505 Corrosion Resistance Tough plastic housing resists such corrosive environments as chemical plants and the salt spray atmosphere on an offshore oil platform Internal constructions are available to resist a corrosive supply pressure media 4195K Pressure Controllers D200050X012 Construction Features Simplified Relay Maintenance A clean out wire provides a fast easy means of cleaning the relay primary orifice during service Pressure Protection for the Case A rubber plug in the plastic case pops out to relieve excessive pressure buildup inside the case Easy Direct Reverse Switching Controller action can be switched from direct to reverse or vice ve
13. es the output pressure delivery of the controller Output pressure is fed back to the proportional bellows The action of the proportional bellows counteracts the flapper movement that resulted from the process pressure change and backs the flapper away from the nozzle until equilibrium is reached The set point adjustment changes the proximity of the nozzle and flapper as does a change in process pressure except that when the set point is changed the nozzle moves with respect to the flapper The proportional band adjustment knob positions the nozzle on the flapper Increasing widening the proportional band moves the nozzle to a position on the flapper where less input and more feedback motion occurs which decreases the gain of the controller Decreasing narrowing the proportional band moves the nozzle toward a position where more input and less feedback motion occurs which increases the gain The controller action is changed from direct to reverse by turning the proportional band adjustment knob to position the nozzle on the flapper quadrant to a point where the direction of the flapper motion versus input motion is reversed see flapper detail in figure 2 With the controller in the reverse acting mode an increase in process pressure causes a decrease in output pressure Proportional Plus Reset and Proportional Plus Reset Plus Rate Controllers 4195KB and KC The operation of proportional plus reset controllers 4195KB
14. ess Management Marshalltown lowa 50158 USA Sorocaba 18087 Brazil Chatham Kent ME4 4QZ UK P Dubai United Arab Emirates ey Singapore 128461 Singapore www Fisher com EMERSON De xC C 3 an Process Management 1987 2014 Fisher Controls International LLC All rights reserved
15. g element with exception of receiver controllers Optional scales available 1 Process Connections Standard 1 4 NPT internal stainless steel all input ranges Optional 1 2 NPT adaptors see table 3 Output Signal Proportional Proportional Plus Reset or Proportional Plus Reset Plus Rate Range Ig 0 2 to 1 0 bar 3 to 15 psig or m 0 4 to 2 0 bar 6 to 30 psig Differential Gap Range m 0 to 1 4 bar 0 to 20 psig or m Oto 2 4 bar 0 to 35 psig Action Field reversible between m direct increasing sensed pressure increases output pressure and W reverse increasing sensed pressure decreases output pressure action Supply and Output Connections 1 4 NPT internal Supply Pressure Requirements 2 See table 4 Table of Contents Leatilles c cone ic bv IRA SEMIS ER 4 Construction Features 4 Principle of Operation 8 Proportional Only Controllers 8 Proportional Plus Reset and Proportional Plus Reset Plus Rate Controllers 8 Differential Gap Controllers 10 Remote Set Point Option 10 continued 4195K Pressure Controllers D200050X012 Supply Pressure Medium Air or natural gas 3 Remote Set Point Pressures m 0 2 to 1 0 bar 3 to 15 psig or m 0 4 to 2 0 bar 6 to 30 psig Construction Materials See table 6 Controller Adjustments Proportional Band 5 to 500 of process scale span Reset Adjustab
16. imits 2 6 40 to 71 C 40 to 160 F Hazardous Area Classification Complies with the requirements of ATEX Group II Category 2 Gas and Dust C x u2 ap Housing Designed to NEMA 3 Weatherproof and IEC 529 IP54 Specifications Mounting Controller can be mounted on m actuator m panel m wall or Bi pipestand Approximate Weight 4 5 kg 10 pounds NOTE Specialized instrument terms are defined in ANSI ISA Standard 51 1 Process Instrument Terminology 1 Consult your Emerson Process Management sales office for additional information 2 The pressure temperature limits in this document and any applicable code or standard should not be exceeded 3 This product can be used with natural gas Natural gas should not contain more than 20 p 4 Normal m3 hr normal cubic meters per hour m3 hr 0 C and 1 01325 bar absolute Sc pm of H2S h standard cubic feet per hour ft3 hr at 60 F and 14 7 psig 5 Without auto manual station With auto manual station air consumption is 0 28 normal m3 hr 10 0 scfh 6 Also use these temperatures for transportation and storage limits Table 1 Available Configurations MODES OPTIONS TYPE y A Proportional Anti Reset Remote Internal Auto NUMBER Hopes jeune Benes Bene Windup Set Point Manual fees Bn piusReset Plus Rate Cap suffix letter F suffix letter M suffix letter E 4195KA X wis eee 4195KAE X
17. is similar to that of proportional only controllers described above However in 4195KB 4195K Pressure Controllers D200050X012 controllers output pressure is fed back to the reset bellows as well as to the proportional bellows In operation proportional plus reset controllers minimize the offset between the process pressure and set point As the process pressure increases in a direct acting controller the flapper moves toward the nozzle restricting flow through the nozzle and increasing nozzle pressure When this occurs relay action increases the output pressure delivery of the controller Output pressure is fed back to the proportional bellows and to the reset bellows The action of the proportional bellows quickly counteracts the flapper movement that resulted from the process pressure change and backs the flapper away from the nozzle Pressure in the reset bellows opposes the action of the proportional bellows and slowly moves the flapper closer to the nozzle Thus when the process pressure changes proportional action temporarily reduces the gain of the controller for improved stability The process pressure then slowly returns to set point as pressure in both bellows equalizes via the reset action The set point adjustment changes the proximity of the nozzle and flapper as does a change in process pressure However when the set point changes the nozzle moves with respect to the flapper The proportional band adjus
18. le from 0 01 to more than 74 minutes per repeat from 100 to less than 0 0135 repeats per minute Rate Adjustable from 0 to 20 minutes Differential Gap Controllers Adjustable from 5 to 100 of process scale span Set Point Adjustable from 0 to 100 of the scale span Controller Performance Repeatability 0 4 of output span Dead Band Less than 0 4 of process scale span Typical Frequency Response 1 5 hertz and 90 degree phase shift with 3 05 m 10 feet of 6 4 mm 1 4 inch tubing and 1639 cm 100 cubic inch volume Steady State Air Consumption 4 5 0 2 to 1 0 Bar 3 to 15 Psig Output 0 09 m3 hr 3 5 scfh 0 4 to 2 0 Bar 6 to 30 Psig Output 0 13 m3 hr 5 0 scfh Delivery Capacity 4 0 2 to 1 0 Bar 3 to 15 Psig Output 6 4 m3 hr 240 scfh 0 4 to 2 0 Bar 6 to 30 Psig Output 9 4 m hr 350 scfh Auto Manual Station Option 10 Anti Reset Windup Option 11 External Feedback Option 11 InstallatiOH i gua ua usa ew Re ete ee 12 Ordering Information 12 Application 0 S E d uu 53 12 Construction la asta E ee eee eee eens 12 4195K Pressure Controllers D200050X012 Specifications continued Product Bulletin 34 5 4195K July 2014 Exhaust Capacity 4 0 2 to 1 0 Bar 3 to 15 Psig Output 5 0 m3 hr 186 scfh 0 4 to 2 0 Bar 6 to 30 Psig Output 7 9 m3 hr 295 scfh Operative Ambient Temperature L
19. rsa by simply loosening the screws on the proportional band cover and moving the cover out to rotate the proportional band knob to the desired action see figure 1 Easy Mode Conversion Conversion from proportional to proportional plus reset control requires the addition of a reset valve and two pieces of tubing Conversion from proportional to proportional plus reset plus rate control requires the addition of a reset rate valve and three pieces of tubing Conversion from proportional to differential gap for on off control requires the addition of one piece of tubing Anti Reset Windup Anti reset windup is available with proportional plus reset controllers A relief valve may be installed to limit reset windup in either direction Remote Set Point The capability to adjust the set point from a remote location is available as an option on 4195K controllers Auto Manual Capability An optional internal auto manual station permits smooth bumpless transfer between automatic control and manual operation without disturbing the controller output A positive acting two position switch showing either automatic or manual control mode is clearly visible with the controller cover closed Product Bulletin 4195K Pressure Controllers 34 5 4195K D200050X012 July 2014 Table 2 Process Sensor Capsular Element Pressure Ratings CAPSULE CAPSULAR SPAN OPERATING RANGE O
20. rtype numbers add an R to any type number if reverse action is desired 4195K Pressure Controllers D200050X012 Figure 5 Typical Yoke Mounting a ACTUATOR 4195K i Ve FILTER REGULATOR MOUNTING PLATE W5661 Product Bulletin 4195K Pressure Controllers 34 5 4195K D200050X012 July 2014 Figure 6 Controller Dimensions and Connections 130 5 13 5 16 18 UNC 2B 3 HOLES MOUNTING 10 04 FRONT VIEW REAR VIEW 1 4 18 NPT SUPPLY PRESSURE CONNECTION 1 4 18 NPT CONTROLLER OUTPUT CONNECTION 1 4 NPT REMOTE SET POINT CONNECTION 1 4 18 NPT VENT CONNECTION 1 4 NPT 4 HOLES BOTTOM VIEW TOP VIEW mm INCH otes 1 gt 1 4 18 NPT process connection marked A for all bourdon tube controllers and for those capsular element controllers used in vacuum pressure applications 2 5 1 4 18 NPT process connection marked B for capsular element controllers used in positive and compound pressure applications B gt For the external feedback connections 4195KB controllers only either the A or B connection is used depending on the location of the process connection 46A9765 A 2892 4 13 Product Bulletin 34 5 4195K 4195K Pressure Controllers July 2014 D200050X012 Figure 7 Mounting Dimensions gt 92 3 62 QT HORIZONTAL PIPE 95 SIDE VIEW VERTICAL P
21. s the gain and returns the process pressure toward the set point Differential Gap For On Off Control Controllers 4195KS The operation of differential gap controllers 4195KS is similar to that of proportional only controllers described above However in 4195KS controllers as the process pressure increases approaching the upper switching point the flapper moves toward the nozzle in a direct acting controller This movement restricts the flow through the nozzle and increases nozzle pressure When this occurs relay action increases the output pressure delivery of the controller Output pressure is fed back to the positive feedback bellows The action of the positive feedback bellows moves the flapper closer to the nozzle increasing nozzle pressure which in turn increases the relay output Output pressure to the final control element switches to full supply pressure As the process pressure decreases approaching the lower switching point the flapper moves away from the nozzle in a direct acting controller reducing nozzle pressure Through relay action pressure to the positive feedback bellows is reduced moving the flapper farther away from the nozzle and further reducing nozzle pressure Output pressure to the final control element switches to zero The set point adjustment changes the proximity of the nozzle and flapper as does a change in process pressure except that when the set point is changed the nozzle move
22. s with respect to the flapper The set point adjustment moves both the upper and lower switching points The proportional band knob positions the nozzle on the flapper Increasing widening the proportional band moves the nozzle away from the input connection When the proportional band adjustment moves the nozzle across the feedback connection the controller action changes between direct and reverse On a direct acting controller changing the proportional band adjustment will widen or narrow the differential gap between the two switching points This is accomplished by moving the position of the lower 4195K Pressure Controllers D200050X012 switching point On a reverse acting controller changing the proportional band adjustment will widen or narrow the differential gap between the two switching points by moving the position of the upper switching point Remote Set Point Option Suffix Letter M The capability to adjust the controller set point from a remote location is available for all 4195KA controllers With this option a control pressure is applied to the capsular element within the remote set point assembly The expansion and contraction of the capsule moves the set point adjustment via connecting linkage Increasing the control pressure to the capsule increases the set point setting and decreasing the control pressure reduces the set point setting This option is designated by the letter M in the type number Auto Manu
23. ssured to this value without permanent zero shift 4 Bourdon tube with travel stops set may be pressured to this value without permanent zero shift Table 6 Construction Materials Part Standard Material Optional Material Case and cover Polyester plastic Exterior tubing Copper W stainless steel Bl polyethylene Exterior fittings C36000 brass W stainless steel Bil polyethylene Interior tubing Copper 30400 304 stainless steel Bourdon tube 1 S31600 316 stainless steel Wi N09902 nickel alloy Bi N05500 nickel alloy for NACE applications Nozzle S30300 303 stainless steel Flapper S31600 Relay springs W 530200 302 stainless steel steel Relay O rings Nitrile Relay diaphragms Nitrile Other relay metal parts IS Aluminum W stainless steel RSS Feedback bellows assembly C51000 bronze 32100 321 stainless steel Supply output gauges Brass wetted parts only stainless steel wetted parts only Remote set point element Wi N09902 nickel alloy E 530300 Capsular input element N09902 nickel alloy 31600 1 Consult your Emerson Process Management sales office for information on other materials Product Bulletin 4195K Pressure Controllers 34 5 4195K D200050X012 July 2014 Figure 1 Controller Construction Details METAL BALL EAE TT SWITCHING 2 s ZONE INDICATOR C LOADER KNOB MANUA NN AUTO MANUA
24. tment knob positions the nozzle on the flapper Increasing widening the proportional band moves the nozzle to a position on the flapper where less input and more feedback motion occurs which decreases the gain of the controller Decreasing narrowing the proportional band moves the nozzle toward a position where more input and less feedback motion occurs which increases the gain The controller action is changed from direct to reverse by turning the proportional band adjustment knob to position the nozzle on the flapper quadrant to a point where the direction of the flapper motion versus input motion is reversed With the controller in the reverse acting mode an increase in process pressure causes a decrease in output pressure A4195KC controller also has a rate valve which is an adjustable restriction that momentarily increases the controller gain to accelerate the corrective action for slow pressure systems A proportional plus reset plus rate controller responds to a change in process pressure as follows First the rate action delays the proportional action just long enough to allow the 4195K Pressure Controllers Product Bulletin 34 5 4195K D200050X012 July 2014 Figure 2 Schematic of Fisher 4195K Controllers MANUAL SET POINT RESET BELLOWS VENTED REVERSE ACTION ADJUSTMENT PROPORTIONAL QUADRANT PROPORTIONAL BANDADJUSTMENT FEEpgack V PROCESS POINTER LINK A REMOTE SE
25. ximum values of operating range 2 Capsules with the travel stops set may be pressured to this value without permanent zero shift Table 3 Optional Process Connection Adaptors Table 4 Supply Pressure Data BAR INPUT PSIG INPUT CONNECTION Normal 5 RANGE RANGE i i Operating Maximum Size Material Output Signal Range T Pressure Up to Upto W 1 2 NPT external or Bl steel or sped Limit 2 0 to 400 0 to 5000 i i W 1 2 NPT internal W stainless Gea Lorna i steel diff gap 1 4 2 8 0 to 400 to 0to5000to 1 2 NPT internal stainless Bar X152 Torodnd 2d 0 to 600 0 to 10 000 steel diff gap 2 4 2 8 0 to 400 to 0to5000to 1 2 NPT external stainless 0to 600 0 to 10 000 Steel Psig 3to 15 or 0 and 20 diff gap 20 40 6 to 30 or 0 and 35 diff gap 35 40 1 If this pressure is exceeded control stability may be impaired 2 If this pressure is exceeded damage to controller components may result Product Bulletin 34 5 4195K 4195K Pressure Controllers July 2014 D200050X012 Table 5 Process Sensor Bourdon Tube Pressure Ratings and Materials SPAN 1 OPERATING RANGE 2 OPERATING ee Minimum Maximum Minimum Maximum LIMITS STANDARD MATERIAL Bar Oto 1 6 1 2 1 3 3 3 0O0to2 5 2 4 1 6 6 6 0to4 2 4 1 6 6 6 0to6 3 5 7 1 10 11 PENE Oto 10 7 14 1 20 22 S31600 Melieunit Oto 25 20 40 0 60 66 316 SST Oto 40 20 40 0 60 66
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