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Emerson Fisher C1 Instruction Manual

1. NS o ME A9 1 5 S NOTE KEYS 11 21 29 ARENOT SHOWN GE28280 B E1070 Key 5 Bourdon Tube A SUBASSEMBLY KEY NOS SHOWN IN FIGURE 24 OR 25 PROPORTIONAL ONLY CONTROLLER PRESSURE RANGE MATERIAL kPa Psig Stainless Steel 0 200 0 30 32B1243X012 0 200 0 30 32B1243X212 2 0 400 0 60 32B1243X022 0 400 0 60 32B1243X172 2 0 700 0 100 32B1243X032 0 700 0 100 32B1243X202 2 0 1400 0 200 32B1243X042 0 1400 0 200 32B1243X162 2 0 2000 0 300 32B1244X052 0 2000 0 300 32B1244X1520 0 4000 0 600 32B1244X062 0 4000 0 600 32B1244x1820 0 7000 0 1000 32B1244X072 0 7000 0 1000 32B1244X1920 0 10 000 0 1500 32B1245X082 0 20 000 0 3000 32B1245X092 0 35 000 0 5000 32B1245X102 0 55 000 0 8000 32B1245X112 0 70 000 0 10 000 32B1245X122 1 Bourdon tubes are also available in NACE compliant material Contact your Emerson Process Management sales office for additional information 2 For oxygen service Recommended spare parts 43 C1 Controllers and Transmitters May 2014 Instruction Manual D103292X012 Figure 23 Typical Reverse Acting Fisher C1 Proportional Plus Reset Assembly Refer to figure 26 for the Front View of the Case amp Cover Assembly DO ue i OE n e
2. a SPRING OUT CLEANING WIRE RELAY ASSEMBLY D d NOTE KEYS 11 21 22 29 ARE NOT SHOWN GE28281 B E1071 s 6 SUBASSEMBLY KEY NOS SHOWN IN FIGURE 24 OR 25 PROPORTIONAL PLUS RESET CONTROLLER WITHOUT ANTI RESET WINDUP Key Description 23 Control Tubing Assembly SST vinyl used with NACE compliant Bourdon tube 24 Relay Tubing Assembly 304 SST 25 Compensator Tubing 304 SST 26 27 Reset Tubing 304 SST Compensator Tubing 304 SST 2 req d 28 VentAss y 29 Machine Screw 2 18 8 SST not shown 2 req d 30 NPT Adaptor aluminum 31 Link bearing 541600 Bourdon tube instruments only 2 req d 32 Rotary Spring 330400 33 Bellows Stud brass not shown 34 Spacer 35 Pressure Set Arm G10080 carbon steel zinc pl 36 Calibration Adjuster 37 Reversing Block 233520 zinc die casting 38 Sleeve POM polyoxymethylene 44 Part Number 1H3011X0032 GE33948X012 GE28421X012 GE30128X012 GE29222X012 1L379546202 Key 39 40 41 42 43 44 45 46 Description Part Number Beam G10080 carbon steel zinc pl Flapper 330100 SST Machine Screw steel pl
3. 0 cece eee eee Calibration Anti Reset Windup Startup Proportional Plus Reset Controllers 02 cece ee eee eee Differential Gap Controllers Adjustments cece eee eee eens Adjustment Set Point Adjustment Proportional Band Calibration Differential Gap Controllers Startup Differential Gap Controllers Transmitter Operation 00008 Adjustments 0 0c cece cece rre Adjustment Zero Adjustment Span e cece ee eee Figure 1 Fisher C1 Controller Yoke Mounted on Control Valve Actuator Calibration Transmitters 0 24 Startup Transmitters eee 26 Principle of Operation 2 eee eee 27 Proportional Only Controllers 27 Proportional Plus Reset Controllers 28 Controllers with Anti Reset Windup 28 Differential Gap Controllers 28 Transmitters 22 5 oL EAE PET EVER ER 29 Maintenance eee eee eee eee eee eee 30 Replacing Gauges llle 30 Replacing Bourdon Tube ee 31 Replacing Bellows Sensing Element 32 Changing Proportional or Reset Valve 33 Changing Anti Reset Windup Differential Relief Valve 33 Changing Action 2 cece eee eee eee 33 Proportional Only to a Differential Gap Controller 0000 eee 33 Re
4. Table 6 Common Signal Pressure Conversions Mps kg cm2 bar kPa Psi 0 02 0 2 0 2 2 200 3 0 03 0 3 0 3 35 5 0 04 0 4 0 4 400 6 0 05 0 5 0 5 50 7 0 06 0 6 0 6 60 9 0 07 0 8 0 8 75 11 0 08 0 8 0 8 80 12 0 09 1 0 1 0 95 14 0 10 1 00 1 002 1000 15 0 12 1 3 1 2 125 18 0 14 1 4 1 4 140 20 0 15 1 5 1 5 150 22 0 17 1 8 1 7 170 25 0 18 1 9 1 9 185 27 0 20 2 0 2 00 200 1 30 0 22 2 2 2 2 220 32 0 23 2 3 2 3 230 33 0 24 2 5 2 4 240 35 0 34 3 5 3 4 345 50 0 55 5 6 5 5 550 80 0 69 7 0 6 9 690 100 1 03 10 5 10 3 1035 150 1 Values as listed in ANSI S7 4 2 Values as listed in IEC Standard 382 3 Values rounded to correspond with kPa values Installation A WARNING To avoid personal injury or property damage resulting from the sudden release of pressure e Always wear protective clothing gloves and eyewear when performing any installation operations e Personal injury or property damage may result from fire or explosion if natural gas is used as the supply medium and appropriate preventive measures are not taken Preventive measures may include but are not limited to one or more of the following remote venting of the unit re evaluating the hazardous area classification ensuring adequate ventilation and the removal of any ignition sources For information on remote venting of this controller transmitter refer to page 11 e If installing into an existing application also refer to t
5. C1 Controllers and Transmitters May 2014 Parts Kits Description Part Number Controller Repair Kits Kit includes Gasket Relay Gasket Bellows Frame Gasket and keys 16 20 21 31 37 38 40 46 49 50 54 62 75 76 and 77 Note Keys 71K 71L and 71M may also be necessary for repair of C1B and C1D controllers Refer to the Common Parts section for part numbers RC100X00L12 RC100X00H12 Standard Temperature High Temperature Relay Replacement Kits Kit includes keys 19 and 29 the replacement relay and 2 Machine Screws Standard Temperature RRELAYXOL22 High Temperature RRELAYXOH22 Case Assembly Seal Kit Kit includes 3 Manifold Seals 1 Manifold Cover and 10 Mounting Screws RC100X00012 Parts List Common Parts Figures 22 23 24 and 25 Key Description Part Number Note Part numbers are shown for recommended spares only For part numbers not shown contact your Emerson Process Management sales office 1 Case and Cover Assembly aluminum Recommended spare parts Key Description Part Number Note Key 2 is used as both a supply gauge and an output gauge on units without a process pressure gauge A quantity of 2 is required for these units On units with a process pressure gauge key 106 key 2 is used for the output gauge A quantity of 1 is required for these units Use key 3 for supply pressure indication when a process pressure gauge is installed Key 3 installs on the supply pressure regula
6. Action of a proportional plus reset controller is similar to that of a proportional only controller except that feedback from the controller output pressure is piped to a reset bellows as well as to the proportional bellows as shown at the right in figure 13 With an increasing controller output pressure pressure in the reset bellows increases Increases in reset bellows pressure moves the beam and flapper closer to the nozzle starting another increase of pressure throughout the system Pressure buildup continues until the controlled pressure is brought back to the set point The reset valve is adjustable to vary the amount of delay in the reset action Closing the reset valve increases the delay in reset action Controllers with Anti Reset Windup During a prolonged difference between set point and the controlled variable such as encountered with intermittent control applications e g batch temperature control or wide open monitors on pressure control reset ramps the controller output to either zero or full supply pressure this condition is reset windup When the controlled variable crosses the set point there will be a delay before the controller output responds to the change in controlled variable Anti reset windup minimizes this delay and permits returning the controlled variable to set point more quickly with minimal overshoot As shown in figure 14 a proportional plus reset controller with anti reset windup includes a differential relief
7. 100 of the sensing element range for 0 4 to 2 0 bar 6 to 30 psig Differential Gap Adjustment For Differential Gap Controllers Full output pressure change adjustable from 15 to 100 of sensing element range Reset Adjustment For Proportional Plus Reset Controllers Adjustable from 0 01 to 74 minutes per repeat 100 to 0 01 repeats per minute Zero Adjustment Transmitters Only Continuously adjustable to position span of less than 100 anywhere within the sensing element range Span Adjustment Transmitters Only Full output pressure change adjustable from 6 to 100 of sensing element range Performance Repeatability 0 525 of sensing element range Deadband Except Differential Gap Controllers 4 0 1 of sensing element range Typical Frequency Response at 100 Proportional Band Output to Actuator 0 7 Hz and 110 degree phase shift with 1850 cm 113 inches volume actuator at mid stroke Output to Positioner Bellows 9 Hz and 130 degree phase shift with 0 2 to 1 0 bar 3 to 15 psig output to 33 cm 2 inches bellows continued C1 Controllers and Transmitters May 2014 Instruction Manual D103292X012 Table 1 Specifications continued Ambient Operating Temperature Limits Wi Standard Construction 40 to 71 C 40 to 160 F E High Temperature Construction 18 to 104 C 0 to 220 F Anti reset windup differential pressure relief and process pressure gauge options are only available in
8. 4 req d Flexure Strip S30200 Flexure Strip Washer G10200 carbon steel 2 req d Washer 18 8 SST 2 req d Washer steel pl 2 req d Machine Screw steel pl Machine Screw steel pl 4 req d Machine Screw 18 8 SST 2 req d Sealing Screw 1 SST Reversing Block Screw 1 SST Cap Screw 18 8 SST 8 req d Reversing Bellows Ass y SST 2 req d Bellows Screw 18 8 SST 2 req d Nozzle 1 SST Machine Screw steel pl 2 req d Machine Screw 18 8 SST 4 req d Mounting Base aluminum 14A5725X022 1U639135132 Recommended spare parts 1 This part is included in the Controller Repair Kit 2 This part is included in the Relay Replacement Kit Instruction Manual D103292X012 C1 Controllers and Transmitters May 2014 Figure 23 Typical Reverse Acting Fisher C1 Proportional Plus Reset Assembly continued Refer to figure 26 for the Front View of the Case amp Cover Assembly M RELAY ASSEMBLY 236 98 r SPRING OUT CLEANING WIRE D Orne D sie CE olo 9 4 amp O P CACAD y y o TK G SS 1b i i A SSE AA paces NOTES ojo 1 ARROW DOWN RELIEVES ON DECREASING OUTPUT OUTPUT
9. 49 with an O ring in the hole previously covered by the reversing block assembly 7 Check all connections for leaks with a soap and water solution Perform the appropriate calibration procedures Relay Replacement Key numbers used in this procedure are shown in figure 22 or 23 except where indicated 1 Shut off the supply pressure and process pressure line s to the controller or transmitter 2 Disconnect the tubing key 24 from the relay 3 Unscrew the output or supply pressure gauge key 2 4 To remove the relay assembly unscrew two Phillips head machine screws key 29 not shown located behind the relay on the back of the case U1 Remove the relay gasket key 19 figure 22 A new relay can be installed as a replacement If a new relay is being installed continue with the next step N O Attach the replacement relay and new relay gasket with machine screws inserted through the back of the case Reinstall the output or supply gauge 8 Connect the tubing and check all connections for leaks Perform the appropriate calibration procedures 36 Instruction Manual D103292X012 C1 Controllers and Transmitters May 2014 Changing Output Signal Range Use the following information and subsequent procedures when changing the output signal range of the controller or transmitter Use the following procedure e Foracontroller or transmitter use this procedure to change from a 0 2 to 1 0 bar 3 to 15 psig t
10. above example this pressure is 5 5 bar 80 psig b Increase pressure to the sensing element while monitoring the output pressure gauge The controller output pressure should switch from zero to full supply pressure when the upper switching point is reached with rising input pressure Note If the upper switching point is not correct adjust the nozzle to correct the error Repeat step 6b until the input pressure and upper switching point are at the desired setting 22 Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 c With falling input pressure the output should switch from full supply pressure back to zero when the lower switching point is reached Reverse acting controllers produce the opposite response 7 Vary the process pressure and observe the switching points Widen or narrow the differential gap by rotating the proportional band adjustment knob then repeat the above steps If the output is within the limits stated refer to the startup procedures in this section If the output pressure cannot be adjusted within the limits stated refer to the maintenance procedures Startup Differential Gap Controllers Calibrate the controller prior to this procedure 1 Besure that the supply pressure regulator is delivering the proper supply pressure to the controller 2 Adjust the proportional band setting for the proper differential gap see figure 10 3 If the controller is used in conjunction w
11. accommodate a different control tubing assembly key 23 with a pressure connection key 14 for a process pressure gauge If a supply pressure gauge is required a gauge with a 1 4 inch connecting stem key 3 must be mounted on the supply pressure regulator CAUTION Before performing this procedure be sure the replacement gauges are the correct range so they are not damaged by overpressure 30 Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 Note Key 2 is used as both a supply gauge and an output gauge on units without a process pressure gauge A quantity of 2 is required for these units On units with a process pressure indicator gauge key 4 key 2 is used for the output gauge A quantity of 1 is required for these units Use key 3 for supply pressure indication when a process pressure gauge is installed Key 3 installs on the supply pressure regulator 1 Shut off the supply pressure and process lines to the controller or transmitter 2 Remove the gauge to be replaced e Unscrew the output or supply gauge key 2 from the relay base e Unscrew the process pressure gauge key 4 from the process connection key 14 e Unscrew the supply gauge key 3 from the supply pressure regulator 3 Coatthe threads of the replacement gauge with a sealant 4 Screw the replacement gauge into the relay base process connection or supply pressure regulator 5 Check for leaks by applying the correct supply pressu
12. adjust the controller span by loosening the two adjusting screws key 48 and moving the calibration adjuster key 36 a small distance as indicated in figure 5 10 Repeat steps 4 through 9 until no further adjustment is necessary 11 Proceed to the startup procedure for proportional controllers Figure 5 Reverse Acting Controller Span Adjustment Proportional Only Controllers IF OUTPUT IS ABOVE BELOW 8TO 10 PSIG 8 TO 10 PSIG 0 6 TO 0 7 BAR 0 6 TO 0 7 BAR MOVE ADJUSTER ipu MOVE ADJUSTER LEFT RIGHT FLAPPER NOZZLE NOTE 3 TO 15 PSIG 0 2 TO 1 0 BAR OUTPUT SHOWN FOR 6 TO 30 PSIG 0 4 TO 2 0 BAR OUTPUT ADJUST VALUES AS APPROPRIATE A6155 1 13 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 For direct acting controllers 4 Apply an input pressure equal to the sensing element lower range value 5 Rotate the pressure setting knob to the minimum value 6 Adjust the nozzle key 54 until the controller output pressure is between 0 6 and 0 7 bar 8 and 10 psig 7 Apply an input pressure equal to the sensing element upper range value 8 Rotate the pressure setting knob to the maximum value Note When performing the span adjustment in step 9 do not watch the output gauge while changing the calibration adjuster The change in output is not a good indication of the change in span While moving the calibration adjuster the output pressure may change in the opposite direction
13. req d 1061 sizes 30 80 and 100 2 req d Street Elbow pl galvanized malleable iron not shown For mounting on 470 472 480 513 656 657 667 panel pipe stand 1051 1052 and 1061 w nipple mounted filter regulator Pipe Nipple pl galvanized steel not shown For mounting on 470 472 480 513 656 657 panel pipe stand 1051 1052 and 1061 w nipple mounted filter regulator Clamp Steel For pipe stand mounting 2 req d Bracket Assembly steel For panel or wall mounting 2 req d Cap Screw steel pl For panel or wall mounting 4 req d Specify quantity of fittings Connector Brass 1 4 NPT X 1 4 O D tubing 1 4 NPT X 3 8 O D tubing Elbow Brass 1 4 NPT X 1 4 O D tubing 1 4 NPT X 3 8 O D Tubing Instruction Manual D103292X012 C1 Controllers and Transmitters May 2014 51 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 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 o
14. than expected For example while moving the calibration adjuster to increase span the output pressure may decrease This should be disregarded since even though the output pressure decreases the span is increasing Proper controller response depends on nozzle to flapper alignment When performing span adjustments carefully loosen both calibration adjuster screws while holding the calibration adjuster in place Then move the calibration adjuster slightly in the required direction by hand or using a screwdriver Verify proper nozzle to flapper alignment and hold the calibration adjuster in place while tightening both adjustment screws 9 If the output is not between 0 6 and 0 7 bar 8 and 10 psig adjust the controller span by loosening the two adjusting screws key 48 and moving the calibration adjuster key 36 a small distance as indicated in figure 6 10 Repeat steps 4 through 9 until no further adjustment is necessary 11 Proceed to the startup procedure for proportional controllers Figure 6 Direct Acting Controller Span Adjustment Proportional Only Controllers IF OUTPUT IS BELOW ABOVE 8TO 10 PSIG 8 TO 10 PSIG 0 6 TO 0 7 BAR 0 6 TO 0 7 BAR MOVE ADJUSTER ag JB MOVE ADJUSTER LEFT RIGHT NOZZLE NOTE 3 TO 15 PSIG 0 2 TO 1 0 BAR OUTPUT SHOWN FOR 6 TO 30 PSIG 0 4 TO 2 0 BAR OUTPUT ADJUST VALUES AS APPROPRIATE A6154 14 Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014
15. the following procedures For reverse acting controllers 6 Apply an input pressure equal to the sensing element upper range value 7 Rotate the pressure setting knob to the maximum value 8 Adjust the nozzle key 54 until the controller output pressure is between 0 6 and 0 7 bar 8 and 10 psig 9 Apply an input pressure equal to the sensing element lower range value 10 Rotate the pressure setting knob to the minimum value Note When performing the span adjustment in step 11 do not watch the output gauge while changing the calibration adjuster The change in output is not a good indication of the change in span While moving the calibration adjuster the output pressure may C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 change in the opposite direction than expected For example while moving the calibration adjuster to increase span the output pressure may decrease This should be disregarded since even though the output pressure decreases the span is increasing Proper controller response depends on nozzle to flapper alignment When performing span adjustments carefully loosen both calibration adjuster screws while holding the calibration adjuster in place Then move the calibration adjuster slightly in the required direction by hand or using a screwdriver Verify proper nozzle to flapper alignment and hold the calibration adjuster in place while tightening both adjustment screws 11 If the outp
16. transmitter 2 Disconnect the tubing from the mounting base key 57 and calibration adjuster key 36 Disconnect the tubing that connects the pressure block key 8 figure 22 to the bellows assembly key 71 at the pressure block end 3 Unscrew the four machine screws key 41 figure 22 or 23 and remove the pressure sensing subassembly from the case 4 Remove the bellows yoke machine screws and washers keys 98 and 99 and move the bellows yoke to the right to permit access to the link screw 5 Disconnect the link key 71M and bearing key 71L from the beam Be careful to avoid losing the bearing 6 Loosen the nuts that secure the bellows assembly key 71 and remove this assembly from the bellows yoke key 100 7 Fora gauge pressure sensing element only one bellows in the assembly install the proper bellows spring key 104 into the bellows assembly if the input signal range is being changed 8 Install the new bellows assembly into the bellows yoke 9 Attach the link and bearing to the bellows assembly Position the bellows yoke key 100 on the mounting base key 57 and attach the link and bearing to the beam Start but do not tighten the four machine screws key 98 with washers key 99 that attach the yoke to the mounting base Slide the yoke up or down as necessary to position the beam horizontally as shown in figure 25 Tighten the machine screws 10 Replace the subassembly in the case and secure with the four
17. valve The valve consists of two pressure chambers separated by a spring loaded diaphragm For the controller shown in figure 14 proportional pressure registers rapidly on the spring side of the relief valve diaphragm as well as in the proportional bellows and reset pressure registers on the opposite side of the relief valve diaphragm As long as controlled pressure changes are slow enough for normal proportional and reset action the relief valve spring will keep the relief valve diaphragm from opening However a large or rapid decrease in controller pressure will cause the relay to exhaust loading pressure from the control device rapidly and also from the proportional system and spring side of the relief diaphragm If this decrease on the spring side of the diaphragm is greater than the relief valve spring setting the diaphragm will move off the relief valve orifice and permit the proportional pressure on the opposite side of the relief valve diaphragm to bleed rapidly into the reset bellows The anti reset windup action also can be reversed to relieve with an increasing proportional pressure Differential Gap Controllers With a differential gap controller feedback pressure does not counteract the change in flapper position as it does in a proportional only controller Instead feedback pressure is piped to the bellows located on the side of the beam and flapper opposite the nozzle the proportional bellows in figure 13 Then as controller outpu
18. 00 115 1650 0 to 200 0 to 3000 200 3000 230 3300 0 to 350 0 to 5000 350 5000 380 5500 0 to 550 0 to 8000 550 8000 550 8000 0 to 700 0 to 10 000 700 10 000 700 10 000 1 If the process can trip to a pressure outside of the operating range of the sensing element a commercially available device such as an overpressure protector may be used to protect against pressure surges and pulsations 2 Range marked on Bourdon tube may be in kPa 1 bar 100 kPa 3 Bourdon tube may be pressurized to limit shown without permanent zero shift 4 With travel stop set at 110 of the range 5 Bourdon tubes are also available in NACE compliant material Contact your Emerson Process Management sales office for additional information Table 4 Bellows Pressure Ranges and Materials MAXIMUM ALLOWABLE STATIC PRESSURE LIMITS 2 PRESSURE RANGES Brass Stainless Steel Construction Construction Bar Psig Bar Psig 0 to 150 mbar 0 to 60 inch wc 1 4 20 zz E Vacuum 0 to 340 mbar 0 to 10 inch Hg 2 8 40 E ere 0 to 1 0 bar 0 to 30 inch Hg 2 8 40 6 9 100 75 mbar vac to 75 mbar 30 inch wc vac to 30 inch wc 1 4 20 Compound Pressure 500 mbar vac to 500 mbar 15 inch Hg vac to 7 5 psig 2 8 40 6 9 100 1 0 bar vac to 1 0 bar 30 inch Hg vac to 15 psig 2 8 40 6 9 100 0 to 150 mbar 0 to 60 inch wc 1 4 20 ux um Gauge Pressure 0 to 250 mbar 0 to 100 inch wc 1 4 20 E 0 to 350 mbar 4 0 to 140
19. 73604142 bellows sensing instruments only 2 req d 1A331928982 i 71L Bearing 76 Nozzle O Ring bellows sensing instruments only 2 req d 1L379546202 Std Temp nitrile 1E222606992 71M Link 4 bellows sensing instruments only 1L379641012 High Temp fluorocarbon 1N838706382 Recommended spare parts 1 This part is included in the Controller Repair Kit keys 101 102 and 103 if you do not have them 46 4 This part is part of the bellows assembly key 71 Instruction Manual D103292X012 C1 Controllers and Transmitters May 2014 Figure 25 Controller Subassembly with Either Gauge Pressure Bellows or Differential Pressure Bellows Sensing Element LINK KEY 71M lt 1 nS SZZ aal A e Lol wows KS ZS PS 7 cec 27772222227 SECTION B B 71 CD LINK KEY 71M SCREW KEY71K BEARING KEY 711 C 100 47 43 71 SIDE VIEW OF SUBASSEMBLY WITH GAUGE PRESSURE BELLOWS SENSING ELEMENT NOTES KEYS 33 46 AND 74 ARE NOT SHOWN KEY 52 IS FEEDBACK BELLOWS I gt KEYS 71K 71L amp 71M ARE PART OF THE BELLOWS ASSEMBLY KEY 71 GE35161 A GE34735 C SCREW lt 7 KEY 71K BEARING lt 1 KEY 71L 47 100 43 SIDE VIEW OF SUBASSEMBLY WITH DIFFERENTIAL PRESSURE BELLOWS SENSING ELEMENT 47 C1 Controllers and Transmitters May 2014 Instruction Manual D103292X012 Key Descript
20. E INDICATION SUBASSEMBLY KEY NOS SHOWN IN FIGURE 24 OR 25 Description Part Number Connecting Link Bourdon tube instruments only Std 18 8 SST 1L379641012 Connecting Link Bourdon tube w optional travel stop 18 8 SST Lockwasher steel pl 2 req d Use w optional Bourdon tube travel stop Machine Screw steel pl 2 req d Use w optional Bourdon tube travel stop Relay Gasket 1 Std Temp chloroprene 10897403012 Hi Temp silicone 1N873804142 O Ring nitrile 10376206992 Gasket 1 chloroprene not shown 1C328603012 Mounting Screw for reset restriction valve 1 4 20 UNC steel pl not shown Control Tubing Assembly 304 SST For Bourdon tube instruments w o process pressure gauge Std 1H3011000A2 Oxygen Service 1H3011X0012 w process pressure gauge 1J2530000A2 Recommended spare parts 1 This part is included in the Controller Repair Kit Instruction Manual D103292X012 C1 Controllers and Transmitters May 2014 Figure 22 Typical Reverse Acting Fisher C1 Assembly continued Refer to figure 26 for the Front View of the Case amp Cover Assembly SPRING OUT CLEANING WIRE il eae ig Epress CE AO
21. Install the anti reset windup assembly key 190 with the arrow pointing in the direction recorded in step 1 14 Proceed to the Startup procedures for proportional plus reset controllers Figure 9 Direct Acting Controller Span Adjustment Proportional Plus Reset Controllers IF OUTPUT IS BELOW ABOVE 8TO 10 PSIG 8TO 10 PSIG 0 6 TO 0 7 BAR 0 6 TO 0 7 BAR MOVE ADJUSTER apu MOVE ADJUSTER LEFT RIGHT FLAPPER NOZZLE NOTE 3 TO 15 PSIG 0 2 TO 1 0 BAR OUTPUT SHOWN FOR 6 TO 30 PSIG 0 4 TO 2 0 BAR OUTPUT ADJUST VALUES AS APPROPRIATE A6154 Calibration Anti Reset Windup Controllers with anti reset windup have a differential relief valve assembly figure 23 This relief valve is set at the factory to relieve at a 0 3 bar 5 psi pressure difference between the reset bellows pressure and the proportional bellows pressure The valve can be adjusted to relieve from 0 14 to 0 4 bar 2 to 7 psig The relief valve can relieve on either rising controller output pressure or falling controller output pressure If the arrow on the relief valve points toward the bottom of the controller case as shown in figure 23 the valve will relieve on falling output pressure If the arrow points in the opposite direction the valve will relieve on rising output pressure The valve can be removed and reinstalled with the arrow pointing in the opposite direction to change the relief action C1 Controllers and Transmitters Instruction Manual Ma
22. Instruction Manual D103292X012 C1 Controllers and Transmitters May 2014 Fisher C1 Pneumatic Controllers and Transmitters Contents Introduction 1 0 ee eee e cece cece eees Scope of Manual 0 0 cece eee eee DOSERPEON ree tte ee etd Specifications Sages a aet mn Rene Educational Services c cece eee eee ees Installation i 2 ker eee RR e aeg Standard Installation 00 00 eee Panel Mounting c cece cece cece eee Wall Mounting cece eee cece e eee Pipestand Mounting e eee ee eens Actuator Mounting eee eee eee eee Pressure Connections eee eee eee Supply Pressure 00 cece eee eee Process Pressure 2s eee e eee eee Vent Assembly 000 c cece eee ee eee Controller Operation 0 0 e eee Proportional Only Controllers Adjustments c cece cece eee ee Adjustment Set Point Adjustment Proportional Band Calibration Proportional Only Controllers Startup Proportional Only Controllers Proportional Plus Reset Controller Adjustments c cece cece e eee Adjustment Set Point Adjustment Proportional Band Adjustment Reset 00000e Adjustment Anti Reset Windup Calibrations 225 ERE EE RR Calibration Proportional Plus Reset Controllers
23. May 2014 Instruction Manual D103292X012 Figure 22 Typical Reverse Acting Fisher C1 Assembly Refer to figure 26 for the Front View of the Case amp Cover Assembly SPRING OUT CLEANING WIRE RELAY ASSEMBLY NOTE GE34729 B GE31719 A E1069 Key toe KEYS 11 21 AND 29 ARE NOT SHOWN TRANSMITTER Description Part Number Bourdon Tube See following table 12 13 42 Dial aluminum Screw nylon transmitters only Cantilever Spring 330200 3 15 psi range 6 30 psi range Nameplate aluminum GE31702X012 GE31701X012 Control Pressure Block For gauge pressure instruments w o process pressure gauge CF8M FMS 20B58 for standard NACE and oxygen service w process gauge SST Plug 31600 not shown used with gauge pressure only 1 req d for standard NACE 2 req d for oxygen service Machine Screw steel pl 4 req d Lockwasher steel pl zn pl 4 req d Pressure Connection 31600 Use w process gauge Pipe Plug steel pl not shown Use w process gauge not used w Bourdon tube protector Key 16 16 17 18 19 20 21 22 23 OPTIONAL PROCESS PRESSUR
24. SUPPLY DURING SHUTDOWN 2 gt ARROW UP RELIEVES ON INCREASING OUTPUT OUTPUT ZERO DURING SHUTDOWN KEYS 80 81 AND 82 ARENOT SHOWN GE31718 A 1072 PROPORTIONAL PLUS RESET CONTROLLER WITH DIFFERENTIAL RELIEF VALVE ASSEMBLY FOR ANTI RESET WINDUP Key Description Part Number 58 Knob PPS polyphenylene sulfide 59 Knob Spring steel zinc pl 60 Washer G10100 carbon steel zinc pl 61 Machine Screw steel pl 62 Washer brass zinc pl 2 req d 63 Gain Adj Bar A03600 64 Washer 18 8 SST 65 Spring Adjustor 18 8 SST 66 TravelStop Assembly SST Use w optional Bourdon tube travel stop 67 Inner Flexure 30200 GE26663X012 68 Outer Flexure 530200 GE26664X012 69 Indicator Scale aluminum 70 Bias Spring SST Recommended spare parts 1 This part is included in the Controller Repair Kit 3 If ordering the bellows key 71 to change the range of a gauge pressure controller also order the appropriate bellows spring key 80 Also order keys 101 102 and 103 if you do not have them Key Description 71 Gauge Pressure Bellows input 3 Brass Part Number 0 150 mbar 0 60 inches wc positive 0 150 mbar 6 60 inches wc vacuum and 75 0 75 mbar 30 0 30 inches wc compound 0 250 mbar 0 100 inches wc positive 0 0 35 mbar 0 5 psig positive and for 0 350 mbar 0 10 inches Hg vacuum 0 0 5 bar 0 7 5 psig positive 0 0 7 bar 0 10 psig positive 0 1 0 bar 0 15 psig positive 0 1 0 ba
25. Startup Proportional Only Controllers General Tuning Guidelines Calibrate the controller prior to this procedure 1 Besure that the supply pressure regulator is delivering the proper supply pressure to the controller 2 Rotate the pressure setting knob to the desired set point 3 Setthe proportional band adjustment to 100 percent for fast processes example liquid pressure or liquid flow For slow processes example temperature calculate the percentage from the equation below For a slow process determine the initial proportional band setting in percent from the following equation 2 x Allowable Overshoot 100 P B Pressure Span For example 2 x 0 14 bar 51 bar x 100 13 2 X 2psig 100 13 30 psig li 1 3 proportional band setting 4 Proportional Action Disturb the system by tapping the flapper lightly or change the set point a small amount and check for system cycling If the system does not cycle then lower the proportional band raising the gain and disturb the system again Continue this procedure until the system cycles At that point double the proportional band setting Note Proportional band adjustment affects the set point Proportional only controllers will show some offset from set point depending upon proportional band setting and process demand After adjusting the proportional band re zero by carefully rotating the nozzle key 54 until the steady state process pressure equals the pr
26. X012 For proportional plus reset controllers w anti reset windup 19A4363X012 Recommended spare parts Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 Figure 26 Front View of Case and Cover Assembly COMPRESSION PLUGS 2 PSIG LABEL USE WITH 2 PSIG CASE AND COVER ASSEMBLY INSIDE COVER CHANGE ACTION LABEL INSIDE COVER SECTION B B o B ojo BN x o o O eee ON 2X ROLL PIN o B L A ATEX MARKING COVER ASSEMBLY Pa CASE ASSEMBLY SECTION A A GE28278 A E1075 49 C1 Controllers and Transmitters May 2014 Instruction Manual D103292X012 Mounting Parts for Panel Wall Pipestand or Fisher Actuator Mounting figures 2 and 3 Key Description Note Contact your Emerson Process Management sales office for C1 mounting FS number 213 Mounting Plate steel For yoke mounting on 470 472 513 656 657 and 667 For yoke mounting on 480 Vertical For yoke mounting on 1051 and 1052 Size 40 positions 1 and 3 w switch and Size 60 position 1 w switch All others 213 Mounting Plate steel continued For yoke mounting on 1061 Size 30 positions 1 and 3 w switch and position 1 w o switch Size 40 position 1 w switch and Sizes 80 and 100 position 3 w o switch All others For pipe stand mounting 215 Machin
27. Y 256 RESET VALVE KEY 256 RESET TUBING RESET TUBING RELAY TUBING KEY 27 RELAY TUBING KEY 27 KEY 24 PROPORTIONAL TUBING ee PROPORTIONAL KEY 27 REVERSING BLOCK TUBING KEY 27 PROPORTIONAL KEY 37 BELLOWS BAND ASSY DIRECT ACTING POSITION FLAPPER SCREW KEYS 40 AND 46 KEYS 40 AND 46 REVERSE ACTING POSITION REVERSING BLOCK KEY 37 PROPORTIONAL BAND ASSY REVERSE ACTING DIRECT ACTING PROPORTIONAL PLUS RESET CONTROLLER GG15992 1 3 Locate the two bellows key 52 the proportional band assembly see figure 18 and the reversing block key 37 4 Disconnect the tubing refer to figure 18 a For a proportional only controller or for a transmitter disconnect the proportional tubing key 25 from the mounting base and reconnect them on the opposite side b For a proportional plus reset controller disconnect the proportional tubing key 27 and reset tubing key 27 from the mounting base and reconnect them on the opposite side 5 Invert the proportional band assembly refer to figure 17 a Turn the proportional band adjustment knob key 73 to 10 35 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 b Unscrew the spring adjustor key 65 removing the bias spring key 70 and washers key 64 with it c Unclip the lock spring key 72 Remove the indicator scale key 69 and proportional band adjustment knob key 73 d Remove the gain adjustm
28. ber locations are shown in figure 4 Provide a process pressure source capable of simulating the process pressure range of the controller If an output pressure gauge is not provided install a suitable pressure gauge for calibration purposes Figure 4 Proportional Only Controller Adjustment Locations PRESSURE SETTING KNOB KEY 58 PRESSURE SETTING DIAL KEY 6 PROPORTIONAL BAND ADJUSTMENT KNOB CALIBRATION ADJUSTER KEY 36 FLAPPER KEY 40 NOZZLE KEY 54 Er ADJUSTER SCREWS KEY 48 Connect a pressure source to the supply pressure regulator and be sure the regulator is delivering the correct supply pressure to the controller The controller must be connected open loop Open loop The controller output pressure changes must be dead ended into a pressure gauge The following procedures use a 0 2 to 1 0 bar 3 to 15 psig output pressure range as an example For a 0 4 to 2 0 bar 6 to 30 psig output range adjust the values as appropriate 1 Complete the above connections and provide a process pressure equal to the sensing element range 2 Rotate the proportional band adjustment knob shown in figure 4 to 1 5 15 percent proportional band 3 Verify that the calibration adjuster screws key 48 are at mid position in the calibration adjuster key 36 slots Depending upon the controller action perform one or the other of the following procedures Instruction Manua
29. cket using the four cap screws key 252 provided Attach the bracket to the wall using suitable screws or bolts Pipestand Mounting Refer to figure 2 Use a hammer and punch to knock out the blanks in the two holes indicated in the back view of figure 2 Attach the spacer spools key 228 and the mounting plate key 213 to the controller with cap screws lock washers and nuts keys 215 221 and 216 Attach the controller to a 2 inch nominal pipe with pipe clamps key 250 Actuator Mounting Refer to figure 3 Controllers specified for mounting on a control valve actuator are mounted at the factory If the instrument is ordered separately for installation on a control valve actuator mount the instrument according to the following instructions Mounting parts for the different actuator types and sizes vary Two typical actuator mounting installations are shown in figure 3 see the parts list for parts required for the specific actuator type and size involved Use a hammer and punch to knock out the blanks in the two holes indicated in the back view of figure 2 Attach the spacer spools key 228 and the mounting plate key 213 to the controller with machine screws lock washers and nuts keys 215 221 and 216 Attach the mounting bracket to the actuator yoke with cap screws key 222 and if needed spacer spools On some designs the mounting bracket is attached to the actuator diaphragm casing rather than to the yoke C1 Contro
30. dial setting Monitor the process pressure and output pressure to be sure the desired settings are attained 23 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 Figure 11 Transmitter Adjustment Locations ZERO ADJUSTMENT KNOB KEY 58 PRESSURE SETTING DIAL KEY 6 FLAPPER KEY 40 ADJUSTER SCREWS KEY 48 NOZZLE KEY 54 CALIBRATION ADJUSTER KEY 36 SPAN ADJUSTMENT KNOB GE34729 B E1061 Adjustment Span The span adjustment is graduated from 0 to 10 A setting of 10 represents a span setting of 100 percent of the process sensing element range The transmitter achieves the highest accuracy when the span is 100 percent The transmitter span adjustment shown in figure 11 is the same as the controller proportional band adjustment Calibration Transmitters The output of each transmitter is checked at the factory before the unit is shipped The transmitter provides an output signal that is proportional to the pressure applied to the sensing element The output pressure has no direct effect on the process pressure The transmitter is calibrated at the factory and should not need additional adjustment Use the following calibration procedures when the sensing element has been changed or other maintenance procedures have altered the calibration of the transmitter The following procedures use a 0 2 to 1 0 bar 3 to 15 psig output pressure range as an example For o
31. e Screw steel pl specify quantity req d 5 16 UNC X 1 inch 5 16 UNCX 1 1 2 inches 5 16 UNC X 2 inches 216 HexNut steel pl specify quantity req d For filter regulator mounting on 1051 1052 and 1061 All other types and mountings 220 Mounting Bracket steel pl not shown For casing mounting and casing mounted filter regulator on 1051 and 1052 221 Lockwasher steel pl specify quantity req d 222 CapScrew steel pl specify quantity req d 5 16 UNC X 3 4 inch 5 16 UNC X 1 inch 5 16 UNC X 1 1 8 inches 5 16 UNC X 1 1 4 inches 5 16 UNC X 1 3 4 inches 5 16 UNC X 2 1 2 inches 3 8 UNF X 1 1 8 inches 50 Key 223 228 229 238 240 241 242 243 244 250 251 252 Note Description Cap Screw steel pl 1051 and 1052 with either case or yoke mounted regulator and 1061 with yoke mounted regulator 2 req d Spacer Spool steel specify quantity req d 470 472 480 513 656 657 667 pipe stand 1051 1052 and 1061 Cap Screw steel pl not shown specify quantity req d 1051 and 1052 casing mounted controller Mounting Plate steel For yoke mounted filter regulator 1051 1052 and 1062 sizes 40 and 60 1061 size 30 Cap Screw steel For yoke mounted filter regulator on 1051 and 1052 sizes 40 and 60 2 req d Spacer Spool steel For yoke mounted filter regulators on 1051 and 1052 sizes 40 and 60 2 req d Spacer Spool steel not shown For yoke mounting on 1051 and 1052 size 40 2
32. e sure that the above measures stay in effect while you work on the equipment e Personal injury or property damage may result from fire or explosion if natural gas is used as the supply medium and appropriate preventative measures are not taken Preventative measures may include but are not limited to one or more of the following Remote venting of the unit re evaluating the hazardous area classification ensuring adequate ventilation and the removal of any ignition sources For information on remote venting of this controller transmitter refer to page 11 Check with your process or safety engineer for any additional measures that must be taken to protect against process media Replacing Gauges Refer to figures 22 and 23 for key number locations unless otherwise directed Three gauge configurations are available for C1 units e Output and supply pressure indications e Output and process pressure indications e Output process and supply pressure indications One gauge type key 2 is used for both output and supply pressure indications when the gauges are installed inside the controller case Key 2 features a 1 8 inch connecting stem that matches the threaded gauge boss extending from the relay base In some cases a process pressure gauge key 4 covers the position of the internal supply pressure gauge The supply pressure gauge has been removed and replaced with a pipe plug key 15 The pressure control block key 10 is different to
33. e value Note Proper transmitter response depends on nozzle to flapper alignment When performing the span adjustment in step 8 carefully loosen both calibration adjuster screws while holding the calibration adjuster in place Then move the calibration adjuster slightly in the required direction by hand or using a screwdriver Verify proper nozzle to flapper alignment and hold the calibration adjuster in place while tightening both adjustment screws 8 If the output pressure is not 15 psig adjust the span by loosening the two adjusting screws key 48 and moving the calibration adjuster key 36 a small distance as indicated in figure 12 9 Repeat steps 4 through 8 until no further adjustment is necessary 10 Proceed to the startup procedure for transmitters Startup Transmitters 1 Besure that the supply pressure regulator is delivering the proper supply pressure to the transmitter 2 Referto the calibration procedures for the transmitter initial settings 3 If the transmitter is used in conjunction with a control valve slowly open the upstream and downstream manual shutoff valves and close the bypass valves 26 Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 Principle of Operation The following sections describe the operation of a controller or transmitter using a Bourdon tube sensing element The operation is the same for an instrument using a bellows sensing element key 71 figure 25 except tha
34. e with other applicable European Community Directives 1 The pressure temperature limits in this document and any applicable standard or code limitation should not be exceeded 2 Normal m3 hr normal cubic meters per hour m3 hr 0 C and 1 01325 bar absolute Scfh standard cubic feet per hour ft3 hr 60 F and 14 7 psig 3 To convert from air flow rate to natural gas flow rate multiply by 1 29 4 An adjustable differential gap differential gap controllers is equivalent to an adjustable deadband Table 2 Available Configurations DESCRIPTION Bourdon Tube Sensing Element Proportional only controller Without anti reset windup With anti reset windup Proportional plus reset controller Differential gap controller Transmitter TYPE NUMBER Bellows Sensing Element Gauge Pressure Only Gauge Pressure Differential Pressure CID CIP C1B C1D Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 Table 3 Bourdon Tube Pressure Range and Materials ET MAXIMUM ALLOWABLE STATIC PRESSURE LIMITSG SEN Standard With Optional Travel Stop 4 MATERIAL 5 Bar Psig Bar Psig Bar Psig Oto 2 0 Oto 30 2 0 30 33 48 0to4 0 0 to 60 4 0 60 6 6 96 0to 7 0 0to 100 7 0 100 11 160 Oto 14 Oto 200 14 200 19 280 Oto 20 0 to 300 20 300 29 420 0to40 0 to 600 40 600 50 720 0to 70 0 to 1000 70 1000 83 1200 316 stainless steel 0 to 100 0 to 1500 100 15
35. ement to sense the gauge pressure vacuum compound pressure or differential pressure of a liquid or gas The controller or transmitter output is a pneumatic pressure signal that can be used to operate a final control element indicating device or recording device Unless otherwise noted all NACE references are to NACE MR0175 15015156 amp NACE MR0103 Specifications Specifications for the C1 controllers and transmitters are listed in table 1 Table 2 explains available configurations and options Educational Services For information on available courses for C1 controllers and transmitters as well as a variety of other products contact Emerson Process Management Educational Services Registration Phone 1 641 754 3771 or 1 800 338 8158 e mail education emerson com http www emersonprocess com education Instruction Manual D103292X012 C1 Controllers and Transmitters May 2014 Table 1 Specifications Available Configurations See table 2 Input Signal Type Bl Gauge pressure Bl vacuum Bl compound pressure or lil differential pressure of a liquid or gas Limits See table 3 or 4 Output Signal Proportional Only or Proportional Plus Reset Controllers and Transmitters W 0 2 to 1 0 bar 3 to 15 psig or E 0 4 to 2 0 bar 6 to 30 psig pneumatic pressure signal Differential Gap Controllers E 0 and 1 4 bar 0 and 20 psig or Wi 0 and 2 4 bar 0 and 35 psig pneumatic pressure signal Action Cont
36. ent bar key 63 Flip it over so it attaches to the opposite side of the cantilever spring key 8 as shown in figure 18 and re attach e Flip over the indicator scale key 69 figure 17 install it and the proportional ban knob key 73 as a unit Snap in the lock spring key 72 f Tighten down the spring adjustor key 65 with the bias spring key 70 and washers key 64 until it stops against the gain adjustment bar key 63 g Turn the proportional band adjustment knob to the 10 setting If it cannot be turned loosen the spring adjustor key 65 6 Change the reversing block assembly figure 16 or 18 key 37 a Remove the sealing screw key 49 figure 24 or 25 Inspect the O ring key 77 located in the recessed area under the sealing screw head Replace the O ring if necessary b Remove the reversing block screw key 50 figure 24 or 25 and reversing block assembly key 37 Inspect the O rings key 77 located in the recessed area under the reversing block screw head and between the reversing block assembly and the calibration adjuster key 36 Replace these O rings if necessary C Position the reversing block assembly with an O ring on the calibration adjuster key 36 so that the nozzle is on the opposite side of the beam key 39 from which it was removed Position the reversing block hole in the calibration adjuster Install the reversing block screw key 50 with an O ring key 77 d Install the sealing screw key
37. ential Gap Controller A proportional only controller may be changed to a differential gap controller or vice versa by changing the position of the proportional tubing and inverting the proportional band assembly 1 Isolate the controller or transmitter from process control and supply pressure Vent any trapped pressure from the controller or transmitter before proceeding with the following steps 2 Disconnect the proportional tubing key 25 figure 16 from the mounting base key 57 figure 24 or 25 and reinstall it in the other connection in the mounting base Figure 16 Reverse Direct Acting Tubing Connection for Differential Gap Controller PROPORTIONAL TUBING KEY 25 PROPORTIONAL TUBING KEY 25 RELAY TUBING KEY 24 REVERSING BLOCK KEY 37 RELAY TUBING KEY 24 PROPORTIONAL BAND ASSY DIRECT ACTING POSITION FLAPPER SCREW FLAPPER SCREW KEYS 40 AND 46 KEYS 40 AND 46 REVERSE ACTING POSITION PROPORTIONAL BAND ASSY REVERSING BLOCK KEY 37 REVERSE ACTING DIRECT ACTING DIFFERENTIAL GAP CONTROLLER GE34724 B 33 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 3 Do not invert the reversing block unless also changing the controller action from direct to reverse or vice versa 4 Invert the proportional band assembly refer to figure 17 a Turn the proportional band adjustment knob key 73 to 10 b Unscrew the spring adjustor key 65
38. ents are 1 4 NPT internal Use 6 mm 1 4 inch or 10 mm 3 8 inch pipe or tubing for supply and output piping The pressure connection locations are shown in figure 2 Supply Pressure A WARNING Severe personal injury or property damage may occur from an uncontrolled process if the instrument supply medium is not clean dry oil free and noncorrosive While use and regular maintenance of a filter that removes particles larger than 40 micrometers in diameter will suffice in most applications check with an Emerson Process Management field office and industry instrument supply medium quality standards for use with hazardous gas or if you are unsure about the proper amount or method of air filtration or filter maintenance to C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 Supply pressure must be clean dry air that meets the requirements of ISA Standard 7 0 01 A maximum 40 micrometer particle size in the air system is acceptable Further filtration down to 5 micrometer particle size is recommended Lubricant content is not to exceed 1 ppm weight w w or volume v v basis Condensation in the air supply should be minimized Alternatively natural gas may be used as the supply pressure medium Gas must be clean dry oil free and noncorrosive H2S content should not exceed 20 ppm Use a suitable supply pressure regulator to reduce the supply pressure source to the normal operating supply pressure shown in table 5 C
39. eration Proportional Only Controllers This section describes the adjustments and procedures for calibration and startup Adjustment locations are shown in figure 4 unless otherwise specified All adjustments must be made with the cover open When the adjustments and calibration procedures are complete close and latch the cover To better understand the adjustments and overall operation of the controller refer to the Principle of Operation section in this manual for proportional only controllers Refer also to the schematic diagram in figure 13 Adjustments Adjustment Set Point Adjust the pressure setting knob by turning the knob clockwise to increase the set point and counterclockwise to decrease the set point Note that the dial setting and actual process pressure may vary significantly especially with a wide proportional band setting Adjustment Proportional Band To adjust the proportional band rotate the proportional band adjustment knob to the desired value The proportional band adjustment determines the amount of change in controlled pressure required to cause the control valve to stroke fully It may be adjusted from 2 to 100 percent for 0 2 to 1 0 bar 3 to 15 psig or 4 to 100 percent for 0 4 to 2 0 bar 6 to 30 psig of the nominal sensing element pressure rating 11 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 Calibration Proportional Only Controllers Unless otherwise indicated key num
40. essure setting dial reading This tuning procedure may be too conservative for some systems The recommended proportional band setting should be checked for stability by introducing a disturbance and monitoring the process Proportional Plus Reset Controllers This section describes the adjustments and procedures for calibration and startup The adjustment locations are shown in figure 7 unless otherwise specified All adjustments must be made with the cover open When the adjustments and calibration procedures are complete close and latch the cover To better understand the adjustments and overall operation of the controller refer to the Principle of Operation section in this manual for proportional plus reset controllers Refer also to the schematic diagram in figure 13 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 Figure 7 Proportional Plus Reset Controller Adjustment Locations RESET ADJUSTMENT KNOB PRESSURE SETTING KNOB KEY 58 PRESSURE SETTING DIAL KEY 6 CALIBRATION ADJUSTER KEY 36 fiesta rad 40 PROPORTIONAL BAND ADJUSTER SCREWS KEY 48 ADIESTMENTKNOB GE28281 B E1060 Adjustments Adjustment Set Point Adjust the pressure setting knob by turning the knob clockwise to increase the set point and counterclockwise to decrease the set point Rotate the knob until the indicator points to the desired set point pressure value The pressure setting dial will re
41. ever machine screws figure 21 step c Remove the inner flexure figure 21 step and install it on the new cantilever 10 Install the new cantilever spring key 8 and reconnect the beam key 39 to the bellows spacer key 34 in reverse sequence of steps 9a and 9b and reattach the bellows to the beam cantilever assembly 11 Compress the bellows and install them into the mounting base key 57 Align the cantilever spring with the gain adjustment bar key 63 For 0 2 to 1 0 bar 3 to 15 psig and 0 4 to 2 0 bar 6 to 30 psig output ranges reverse the spring spacer key 245 as shown in figure 19 Install the indicator scale key 69 and the proportional band adjustment knob key 73 as a unit Snap the lock spring key 72 onto the indicator scale 12 Install the spring adjustor key 65 figure 17 and washer key 64 figure 17 on the bias spring key 70 figure 17 Tighten down the spring adjustor until it stops against the gain adjustment bar key 63 38 Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 13 15 16 17 Figure 21 Beam Cantilever Spring Assembly Turn the proportional band adjustment knob to 10 If it cannot be turned to 10 loosen the spring adjustor key 65 14 Secure the bellows key 52 with the bellows screws key 53 making sure that the nozzle key 54 is centered on the flapper key 40 Unscrew the supply and output gauges figure 22 or 23 key 2 and instal
42. ey 10 figure 22 or 23 to the Bourdon tube or bellows assembly key 5 or 52 at the pressure block end 3 Unscrew the machine screws key 41 figure 22 or 23 and remove the subassembly from the case 4 If the controller or transmitter uses a Bourdon tube sensing element disconnect the Bourdon tube from the beam key 39 by removing the screw key 56 Be careful to avoid losing the bearing key 31 Unscrew the machine screws key 55 and remove the washers and Bourdon tube keys 45 and 5 37 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 5 Unscrew the bellows screws key 53 from each end of the mounting base key 57 Note The bellows screws key 53 have an O ring key 77 figure 20 installed beneath the bellows screw head Remove the O ring and obtain a replacement when re assembling the bellows Figure 20 Bellows Screw Detail O RING KEY 77 A6281 1 6 Unscrew the spring adjustor key 65 Unclip the lock spring key 72 figure 17 and remove the indicator scale key 69 and the proportional band adjustment knob key 73 7 Compress the bellows key 52 so that the end of the bellows beam key 39 and cantilever spring key 8 can be removed from the mounting base key 57 8 Unscrew the bellows key 52 from the bellows cantilever assembly 9 Remove the cantilever spring from the spacer key 34 a Remove the beam machine screws figure 21 step b Remove the cantil
43. flect the desired set point if the controller is accurately calibrated Adjustment Proportional Band To adjust the proportional band rotate the proportional band adjustment knob to the desired value The proportional band adjustment determines the amount of change in controlled pressure required to cause the control valve to stroke fully It may be adjusted from 3 to 100 percent for 0 2 to 1 0 bar 3 to 15 psig or 6 to 100 percent for 0 4 to 2 0 bar 6 to 30 psig of the nominal sensing element pressure rating Adjustment Reset To adjust reset action turn the knob clockwise to decrease the minutes per repeat Turn the knob counterclockwise to increase the minutes per repeat Increasing the minutes per repeat provides a slower reset action The reset adjustment dial is calibrated in minutes per repeat By definition this is the time in minutes required for the reset action to produce an output change which is equal to the change produced by proportional control action This is Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 in effect the time in minutes required for the controller to increase or decrease its output pressure by an amount equal to a proportional increase or decrease caused by a change in set point or process pressure Adjustment Anti Reset Windup The externally mounted differential relief valve can be mounted to relieve on increasing or decreasing output pressure Calibration Calibratio
44. g the span adjustment in step 11 do not watch the output gauge while changing the calibration adjuster The change in output is not a good indication of the change in span While moving the calibration adjuster the output pressure may 18 Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 change in the opposite direction than expected For example while moving the calibration adjuster to increase span the output pressure may decrease This should be disregarded since even though the output pressure decreases the span is increasing Proper controller response depends on nozzle to flapper alignment When performing span adjustments carefully loosen both calibration adjuster screws while holding the calibration adjuster in place Then move the calibration adjuster slightly in the required direction by hand or using a screwdriver Verify proper nozzle to flapper alignment and hold the calibration adjuster in place while tightening both adjustment screws 11 If the output pressure is not between 0 6 and 0 7 bar 8 and 10 psig adjust the controller span by loosening the two adjusting screws key 48 and moving the calibration adjuster key 36 a small distance as indicated in figure 9 12 Repeat steps 6 through 11 until no further adjustment is necessary 13 For C1P and C1B controllers with anti reset windup remove the two machine screws anti reset windup cover and two O rings installed in step 1 of this procedure
45. he WARNING at the beginning of the Maintenance section in this instruction manual e Check with your process or safety engineer for any additional measures that must be taken to protect against process media Standard Installation The instruments are normally mounted vertical with the case cover as shown in figure 1 If installing the instrument in any other position be sure that the vent opening shown in figure 2 is facing downward Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 Panel Mounting Refer to figure 2 Cut a hole in the panel surface according to the dimensions shown in figure 2 Remove the cap screws key 252 brackets key 251 and vent assembly key 28 Slide the controller or transmitter into the cutout and reattach the brackets Tighten the cap screw located in the center of each bracket to draw the case snugly and evenly against the panel Reinstall the vent unless a remote vent will be used Wall Mounting Refer to figure 2 Drill four holes in the wall using the dimensions shown in figure 2 In the bracket key 251 are 8 7 mm 0 3438 inch diameter holes Back out the cap screw located in the center of each bracket The screws are used for panel mounting but are not required for wall mounting If tubing runs through the wall drill holes in the wall to accommodate the tubings Figure 2 shows the pressure connection locations in the back of the case Mount the controller to the bra
46. ig 7 Setthe input pressure equal to zero Note Proper transmitter response depends on nozzle to flapper alignment When performing the span adjustment in step 8 carefully loosen both calibration adjuster screws while holding the calibration adjuster in place Then move the calibration adjuster slightly in the required direction by hand or using a screwdriver Verify proper nozzle to flapper alignment and hold the calibration adjuster in place while tightening both adjustment screws 8 If the output pressure is not 15 psig adjust the span by loosening the two adjusting screws key 48 and moving the calibration adjuster key 36 a small distance as indicated in figure 12 9 Repeat steps 4 through 8 until no further adjustment is necessary 10 Proceed to the startup procedure for transmitters 25 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 Figure 12 Transmitter Span Adjustment IF OUTPUT IS BELOW ABOVE 15 PSIG 15 PSIG 1 0 BAR 1 0 BAR MOVE ADJUSTER gjss pe MOVE ADJUSTER LEFT RIGHT NOTE 3 TO 15 PSIG 0 2 TO 1 0 BAR OUTPUT SHOWN FOR 6 TO 30 PSIG 0 4 TO 2 0 BAR OUTPUT ADJUST VALUES AS APPROPRIATE A6156 For direct acting transmitters 4 Rotate the zero adjustment knob to zero 5 Setthe input pressure to zero 6 Adjust the nozzle key 54 until the transmitter output pressure is at 0 2 bar 3 psig 7 Apply an input pressure equal to the sensing element upper rang
47. inch wc 2 8 40 5e eun 0 to 0 35 bar 0 to 5 psig 2 8 40 Positive pressure 0 to 0 5 bar 0 to 7 5 psig 2 8 40 ed inm 0 to 0 7 bar 0 to 10 psig 2 8 40 aes ES Oto 1 0 bar 0to 15 psig 2 8 40 6 9 100 0 to 1 4 bar 0 to 20 psig 2 8 40 nis Les 0 to 2 0 bar 0 to 30 psig 2 8 40 6 9 100 0 to 300 mbar 0 to 80 inch wc 1 4 20 E ES 0 to 0 7 bar 0 to 10 psi 2 8 40 E 5 Differential Pressure 0 to 1 4 bar 0 to 20 psi 2 8 40 Es zm 0 to 2 0 bar 0 to 30 psi 6 9 100 1 If the process can trip to a pressure outside of the operating range of the sensing element a commercially available device such as an overpressure protector may be used to protect against pressure surges and pulsations 2 Bellows may be pressured to limit shown without permanent zero shift 3 Transmitter only 4 Except transmitter 5 The overrange limit for these sensing elements is a differential pressure equal to the maximum allowable static pressure limit Table 5 Supply Pressure Requirements Output Signal Range PPE Supply Maximum UE a To Prevent 0 2 to 1 0 or 0 and 1 4 differential gap 1 4 2 8 par 0 4 to 2 0 or 0 and 2 4 differential gap 2 4 2 8 3to 15 or 0 and 20 differential gap 20 40 Psig 6 to 30 or 0 and 35 differential gap 35 40 1 If this pressure is exceeded control may be impaired C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012
48. ion Part Number Note A total of 5 O rings key 77 are used 1 O ring is used under the sealing screw key 49 1 O ring is used under the reversing block screw key 50 1 O ring is used between the reversing block ass y key 52 and the calibration adjuster key 36 and 1 O ring is used in the recessed area under the head of each of the bellows screws key 53 77 O Ring Std Temp nitrile 5 req d 1D687506992 High Temp fluorocarbon 5 req d 1N430406382 Note Keys 78 through 82 are used for Proportional Plus Reset controllers only 78 Tubing Assembly SST 79 Tubing Assembly SST 80 Anti Reset Windup Cover not shown 81 O Ring not shown 2 req d 82 Machine screw not shown 2 req d 1C853806992 48 Key Description Part Number 98 Machine Screw steel pl 4 req d Gauge and differential pressure bellow instruments 99 Washer steel pl for Bourdon tube instruments 2 req d for bellows sensing instruments 4 req d 100 Bellows Yoke zinc use with gauge and differential pressure bellows Note Keys 101 through 105 are used for gauge pressure bellows instruments only 101 JamNut steel pl 102 Washer steel pl 103 Spring seat pl brass 104 Spring steel pl 105 Label bellows sensing instruments only 190 Anti Reset Windup Ass y For Proportional Plus Reset Controllers only 245 Spring Spacer A6061 256 ResetRestriction Valve For proportional plus reset controllers w o anti reset windup 19A4361
49. ith a control valve slowly open the upstream and downstream manual shutoff valves and close the bypass valves 4 To change the differential gap perform steps 1 through 5 of the calibration for differential gap controllers procedure Transmitter Operation This section describes the adjustments and procedures for calibration and startup Refer to figure 11 for the adjustment locations All adjustments must be made with the cover open When the adjustments and calibration procedures are complete close and latch the cover To better understand the adjustments and overall operation of the transmitter refer to the Principle of Operation section in this manual for transmitters Refer also to the schematic diagram in figure 13 Adjustments Adjustment Zero The pressure setting dial is marked ZERO ADJUSTMENT PRESSURE SETTING Zero is in the center of the dial and the pressure values increase to the right and left of the center as shown in figure 11 To set the zero rotate the pointer around the pressure setting dial Rotate the pointer clockwise to increase or counterclockwise to decrease the output depending on transmitter action and desired setting For direct acting transmitters zero adjustment determines the process pressure at which the transmitter output signal will be at its lower range limit The dial key 6 graduations are approximate indications of the transmitter zero setting When making adjustments do not rely solely on the
50. l C1 Controllers and Transmitters D103292X012 May 2014 For reverse acting controllers 4 Apply an input pressure equal to the sensing element upper range value 5 Rotate the pressure setting knob to the maximum value 6 Adjust the nozzle key 54 until the controller output pressure is between 0 6 and 0 7 bar 8 and 10 psig 7 Apply an input pressure equal to the sensing element lower range value 8 Rotate the pressure setting knob to the minimum value Note When performing the span adjustment in step 9 do not watch the output gauge while changing the calibration adjuster The change in output is not a good indication of the change in span While moving the calibration adjuster the output pressure may change in the opposite direction than expected For example while moving the calibration adjuster to increase span the output pressure may decrease This should be disregarded since even though the output pressure decreases the span is increasing Proper controller response depends on nozzle to flapper alignment When performing span adjustments carefully loosen both calibration adjuster screws while holding the calibration adjuster in place Then move the calibration adjuster slightly in the required direction by hand or using a screwdriver Verify proper nozzle to flapper alignment and hold the calibration adjuster in place while tightening both adjustment screws 9 If the output is not between 0 6 and 0 7 bar 8 and 10 psig
51. l new gauges with correct ranges Replace the subassembly in the case and secure with machine screws figure 22 or 23 key 41 Re install the Bourdon tube if it was removed refer to the Replacing the Bourdon Tube section Reconnect all tubing Check all tubing connections and the bellows machine screws for leaks tighten as necessary Perform the appropriate calibration procedures BELLOWS SPACER KEY 34 INNER FLEXURE OUTER FLEXURE KEY 67 KEY 68 CANTILEVER SPRING MACHINE SCREW KEY 8 KEY 51 BEAM KEY 39 MACHINE SCREW KEY 51 in GE34726 B 1068 39 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 Parts Ordering Whenever corresponding with your Emerson Process Management sales office about this equipment mention the serial number of the unit The serial number can be found on the nameplate key 22 figure 22 When ordering replacement parts also state the complete 11 character part number of each part required as found in the following parts list A WARNING Use only genuine Fisher replacement parts Components that are not supplied by Emerson Process Management should not under any circumstances be used in any Fisher instrument Use of components not supplied by Emerson Process Management may void your warranty might adversely affect the performance of the instrument and could cause personal injury or property damage 40 Instruction Manual D103292X012
52. llers and Transmitters May 2014 Instruction Manual D103292X012 Figure 2 Panel Wall and Pipestand Mounting 2 INCH NOMINAL VENT ASSEMBLY KEY 28 PIPESTAND MOUNTING 8 7 11 32 MOUNTING PANEL MOUNTING NOTES 1 ALL CONNECTIONS ARE 1 4 NPT INTERNAL 2 gt HIGH PRESSURE CONNECTION FOR DIFFERENTIAL PRESSURE UNITS B gt LOW PRESSURE CONNECTION FOR DIFFERENTIAL PRESSURE UNITS E1052 WALL MOUNTING 63 5 2 50 63 5 2 50 65 8 2 59 23 1 0 91 KNOCK OUT 218 9 8 62 CUTOUT FOR FOUR HOLES PANELMOUNTING rog WALL MOUNTING mm INCH Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 Figure 3 Actuator Mounting SUPPLY PRESSURE REGULATOR 216 215 223 221 SUPPLY PRESSURE REGULATOR GE33947 A GE33946 A TYPICAL ROTARY ACTUATOR TYPICAL SLIDING STEM ACTUATOR Pressure Connections A WARNING To avoid personal injury or property damage resulting from the sudden release of pressure do not install any system component where service conditions could exceed the limits given in this manual Use pressure relieving devices as required by government or accepted industry codes and good engineering practices All pressure connections on C1 instrum
53. machine screws key 41 figure 22 or 23 Reconnect all tubing 11 If abellows assembly with a different range is installed remove the machine screw and washer keys 61 and 60 and dial key 6 and install a new dial having an adjustment range corresponding to the range of the bellows If an optional process pressure gauge key 4 figure 22 is being used install a new gauge with the appropriate measurement capability 32 Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 12 Check all tubing connections for leaks and the bellows yoke machine screws tighten as necessary Perform the appropriate calibration procedures Changing Reset Valve 1 Disconnect the appropriate tubing and remove the reset restriction valve assembly key 256 figure 23 by removing the screw key 22 not shown from the back of the case Install the desired replacement assembly 2 Connect the tubing check all connections for leaks and perform the appropriate calibration procedures Changing Anti Reset Windup Differential Relief Valve Refer to figure 24 for key number locations 1 Note the controller output pressure zero or supply when the process is shut down 2 Remove the differential relief valve assembly 3 Refer to figure 14 Install the replacement relief valve with the arrow positioned so that the controller output will be as noted in step 1 when the process is shut down Changing Action Proportional Only to a Differ
54. n Proportional Plus Reset Controllers Unless otherwise indicated key number locations are shown in figure 7 Before starting this procedure e Provide a process pressure source capable of simulating the process pressure range of the controller e f an output pressure gauge is not provided install a suitable pressure gauge for calibration purposes The controller must be connected open loop Open loop The controller output pressure changes must be dead ended into a pressure gauge Note C1P and C1B controllers with anti reset windup are supplied with two O rings key 81 an anti reset windup cover key 80 and two machine screws key 82 Use these parts in the next step 1 For C1P and C1B controllers with anti reset windup record the direction of the arrow on the anti reset windup assembly key 190 in figure 23 Remove the assembly and install the two O rings key 81 and cover key 80 supplied with the controller Secure the cover with the two machine screws key 82 provided Connect regulated supply pressure to the controller Do not exceed the normal operating pressure in table 5 Rotate the reset knob to 0 01 minutes per repeat fastest setting Rotate the proportional band adjustment knob to 1 5 15 percent proportional band Verify that the calibration adjuster screws key 48 are at mid position in the calibration adjuster key 36 slots m A UN Depending upon the controller action perform one or the other of
55. n touched Washers key 62 are used as shims to set parallelism 9 Check to be sure that the beam is parallel with the bottom of the case and that the link key 16 is in tension If the beam is not parallel with the case loosen the machine screws key 55 reposition the Bourdon tube to get the beam parallel and retighten the screws 10 If a Bourdon tube with a different range was installed remove the machine screw and washer keys 61 and 60 and dial key 6 Install a new dial having an adjustment range corresponding to the range of the Bourdon tube If an optional process pressure gauge key 4 figure 22 is being used install a new gauge with the appropriate measurement capability 31 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 Figure 15 Connecting Link BOURDON TUBE KEY 5 BOURDON TUBE KEY 5 LINK BEARING KEY 31 WASHER KEY 62 WASHER QTY 2 KEY 62 LINK BEARING KEY 31 BEAM KEY 39 WASHER KEY 62 CONNECTING LINK KEY 16 BEAM BINDING CONNECTING LINK PROPERLY ALIGNED KEY 39 IMPROPERLY ALIGNED CONNECTING LINK CONNECTING LINK KEY 16 GE37119 11 Check all tubing connections for leaks and the Bourdon tube machine screws tighten as necessary Perform the appropriate calibration procedures Replacing Bellows Sensing Element Refer to figure 25 for key number locations unless otherwise directed 1 Shut off the supply pressure and process lines to the controller or
56. o a 0 4 to 2 0 bar 6to 30 psig output signal range or vice versa also see figure 19 e Fora differential gap controller use this procedure to change from a 0 and 1 4 bar 0 and 20 psig to a 0 and 2 4 bar 0 and 35 psig output signal range or vice versa also see figure 19 e When changing the supply pressure source to a new range refer to table 5 for supply pressure requirements for the output signal range selected Figure 19 Changing From a 0 2 to 1 0 bar 3 to 15 psig to a 0 4 to 2 0 bar 6 to 30 psig Output Signal Range or Vice Versa CANTILEVER SPRING SPRING C H SPACER m KEY 245 KEY 70 WASHER SPRING KEY 64 ADJUSTER KEY 65 0 2 TO 1 0 BAR 3 TO 15 PSIG OUTPUT RANGE NOTE GG15991 A CANTILEVER SPRING KEY 8 SPRING lt 7 SPACER EN KEY 245 SPRING KEY 70 WASHER SPRING KEY 64 ADJUSTER 0 4 TO 2 0 BAR 6 TO 30 PSIG KEY 65 OUTPUT RANGE LD REVERSE THE SPRING SPACER AS APPROPRIATE TO CHANGE THE BIAS SPRING WORKING LENGTH Also make appropriate changes to the nameplate of the controller or transmitter reflecting the new range selections Refer to figure 24 or 25 for key number locations unless otherwise directed 1 Shut off the supply pressure and process lines to the controller or transmitter 2 Disconnect the tubing from the mounting base key 57 and calibration adjuster key 36 Disconnect the tubing that connects the pressure block k
57. ocess pressure produces increasing output pressure or vice versa Changing the action is accomplished by reversing the positions of the reversing block proportional band assembly and bellows tubing s Refer to figures 16 17 18 and 21 for key number locations unless otherwise directed 1 Isolate the controller or transmitter from process control and supply pressure Vent any trapped pressure from the controller or transmitter before proceeding with this procedure 2 As shown in figure 18 locate the new tubing proportional band assembly and reversing block positions for the desired action 34 Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 Figure 18 Reverse Direct Acting Tubing Connections for Proportional Controllers or Transmitter PROPORTIONAL TUBING PROPORTIONAL TUBING KEY 25 KEY 25 RELAY betel RELAY TUBING KEY 24 BELLOWS REVERSING BLOCK KEY 3 KEY 52 PROPORTIONAL NOZZLE KEY 54 BAND ASSY DIRECT ACTING FLAPPER SCREW cae KEYS 40 AND 46 FLAPPER SCREW KEYS 40 AND 46 REVERSING PROPORTIONAL ACTING POSITION BAND ASSY REVERSING BLOCK KEY 37 NOZZLE KEY 54 REVERSE ACTING DIRECT ACTING TO CHANGE ACTION OF THE CONTROLLER REPOSITION THE PROPORTIONAL TUBING REVERSING BLOCK NOZZLE AND PROPORTIONAL BAND ASSY AS SHOWN ABOVE PROPORTIONAL ONLY CONTROLLER OR TRANSMITTER RESET VALVE KE
58. ollers found on page 12 of this manual 4 When calibration is complete return the tubing key 25 and the proportional band assembly to their original locations and continue on with step 5 of this procedure Note After reinstalling the tubing key 25 and proportional band assembly a slight offset of the output pressure will be noticed due to a combination of switching from the proportional bellows to the reset bellows and the repositioning of the cantilever spring Performing step 6b below adjusts for this offset 5 Refer to figure 10 to determine the proportional band dial setting required for the desired differential gap For example assume that a 0 to 100 psig sensing element is being used and the controller is to switch from zero to full supply pressure at a process pressure of 80 psig with rising process pressure and from full supply pressure to zero at 20 psig with falling pressure This is for a direct acting controller The differential gap is 5 5 bar 1 3 bar 6 9 bar x 100 60 80 psig 20 psig 100 psig x 100 60 From figure 10 the proportional band dial setting should be approximately 4 5 rotate the proportional band adjustment knob to 4 5 6 Setting the process pressure For a Direct Acting Controller a Rotate the pressure setting knob to the pressure at which the controller output is to switch to the upper switching point zero to full supply pressure with rising process pressure In the
59. onnect supply pressure to the SUPPLY connection at the back of the case A WARNING To avoid personal injury or property damage resulting from the sudden release of process pressure use a high pressure regulator system when operating the controller or transmitter from a high pressure source If operating the controller or transmitter from a high pressure source up to 138 bar 2000 psig use a high pressure regulator system such as the Fisher 1367 High Pressure Instrument Supply System For 1367 system installation adjustment and maintenance information refer to the 1367 High Pressure Instrument Supply System with Overpressure Protection instruction manual D100343X012 Process Pressure A WARNING To avoid personal injury or property damage resulting from the sudden release of pressure when using corrosive media make sure the tubing and instrument components that contact the corrosive medium are of suitable noncorrosive material Also refer to the Installation Warning at the beginning of this section The pressure connections to the controller depend upon the type of pressure sensing gauge or differential Gauge pressure controllers use either a Bourdon tube or bellows as the sensing element as indicated in table 2 Differential pressure controllers use two bellows to sense differential pressure For gauge pressure instruments The control pressure block key 10 in figure 22 has two connections Process pressure can be connected ei
60. r 0 30 inches Hg vacuum and 500 0 500 mbar 15 0 7 5 psig compound 0 1 4 bar 0 20 psig positive 0 2 0 bar 0 30 psig positive and 1 0 0 1 0 bar 30 0 15 psig compound Stainless steel 0 1 0 bar 0 15 psig positive 0 1 0 bar 0 30 inches Hg vacuum and 500 0 500 mbar 15 0 7 5 psig compound 0 2 0 bar 0 30 psig positive 1 0 0 1 0 bar 30 0 15 psig compound 1L3780000A2 1L3788000A2 1L3781000A2 1L3789000A2 1L3782000A2 1L3783000A2 1L3784000A2 1L3785000A2 1L3786000A2 1L3787000A2 45 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 Figure 24 Controller Subassembly with Bourdon Tube Sensing Element 64 G4 9 69 G 69 G2 68 GE33918 A VIEW A A BOURDON TUBE TRAVEL STOP SUBASSEMBLY SECTION A A SECTION B B SECTION C C NOTE KEYS 33 AND 74 ARE NOT SHOWN GE26600 C Key Description Part Number Key Description Part Number 71 Differential Pressure Bellows input Brass 72 Lock Spring 304L SST GE32298X012 0 200 mbar 0 80 inches wc 213790000A2 73 Proportional Band Adjustment Knob steel PPS 0 0 7 bar 0 10 psi 213791000A2 74 Machine Screw 18 8 SST 2 req d 0 1 4 bar 0 20 psi 213792000A2 2 m Stainless steel 75 Gasket 0 2 0 bar 0 30 psi 213793000A2 Std Temp chloroprene 2 req d 1D397003012 71K Machine Screw steel pl High Temp silicone 2 req d 1N8
61. re with the nozzle capped to produce full output pressure Replacing Bourdon Tube Refer to figure 24 for key number locations unless otherwise directed 1 Shut off the supply pressure and process lines to the controller or transmitter 2 Unscrew the machine screw key 56 to disconnect the link key 16 and bearing key 31 from the beam key 39 Be careful to avoid losing the bearing key 31 Washer s key 62 for the machine screw key 56 are at times furnished for insertion at the beam key 39 connection to ensure alignment of the connecting link key 16 3 Disconnect the control tubing key 23 figure 23 Unscrew the two screws key 55 and washers key 45 and remove the Bourdon tube key 5 4 Unscrew the machine screw key 56 and remove the link and bearing keys 16 and 31 from the Bourdon tube Be careful to avoid losing the bearing Attach the link and bearing to the replacement Bourdon tube Attach the Bourdon tube with two machine screws and washers keys 55 and 45 Connect the link and bearing to the beam key 39 oo N OQ Ul After connecting the link to the beam make sure that the link is parallel to the sensing element key 5 and the beam key 39 so that it does not bind against the sensing element of the beam Figure 15 shows a properly aligned connecting link the connecting link is not in contact with the Bourdon tube or or washers When properly configured the connecting link moves freely whe
62. removing the bias spring key 70 and washers key 64 with it c Undlip the lock spring key 72 Remove the indicator scale key 69 and proportional band adjustment knob key 73 d Remove the gain adjustment bar key 63 Flip it over so it attaches to the opposite side of the cantilever spring key 8 as shown in figure 16 and screw it back down e Flip over the indicator scale key 69 install it and the proportional band adjustment knob key 73 as a unit Snap in the lock spring key 72 f Tighten down the spring adjustor key 65 with the bias spring key 70 and washers key 64 until it stops against the gain adjustment bar key 63 g Turn the proportional band adjustment knob to the 10 setting If it cannot be turned to the 10 setting loosen the spring adjustor key 63 5 Check all connections for leaks with a soap and water solution Perform the appropriate calibration procedure Figure 17 Proportional Band Assembly PROPORTIONAL BAND ADJUSTMENT KNOB KEY 73 oe iia LOCK SPRING ll Hl MACHINE SCREW KEY 72 KEY 56 CANTILEVER SPRING INDICATOR SCALE KEY 8 KEY 69 SPRING SPACER MACHINE SCREW KEY 245 KEY 74 BIAS SPRING GAIN ADJUSTMENT BAR KEY 70 KEY 63 WASHER KEY 64 SPRING ADJUSTOR KEY 65 GE34725 B Reverse to Direct Action Use the numbered steps below to change from reverse action increasing process pressure produces decreasing output pressure to direct action increasing pr
63. rol action is field reversible between E direct increasing sensed pressure produces increasing output signal and lll reverse increasing sensed pressure produces decreasing output signal Supply Pressure Requirements See table 5 Supply Pressure Medium Air or natural gas Air Supply pressure must be clean dry air that meets the requirements of ISA Standard 7 0 01 A maximum 40 micrometer particle size in the air system is acceptable Further filtration down to 5 micrometer particle size is recommended Lubricant content is not to exceed 1 ppm weight w w or volume v v basis Condensation in the air supply should be minimized Natural Gas Natural gas must be clean dry oil free and noncorrosive H2S content should not exceed 20 Steady State Air Consumption 2 3 0 2 to 1 0 bar 3 to 15 psig 0 08 normal m3 hour 3 scfh 0 4 to 2 0 bar 6 to 30 psig 0 12 normal m3 hour 4 5 scfh Supply and Output Connections 1 4 NPT internal Common Signal Pressure Conversions See table 6 Proportional Band Adjustment For Proportional Only Controllers Full output pressure change adjustable from ll 2 to 100 of the sensing element range for 0 2 to 1 0 bar 3 to 15 psig or ll 4 to 100 of the sensing element range for 0 4 to 2 0 bar 6 to 30 psig For Proportional Plus Reset Controllers Full output pressure change adjustable from ll 3 to 100 of the sensing element range for 0 2 to 1 0 bar 3 to 15 psig or ll 6 to
64. t Set Point The position of the pressure setting knob determines the location of the differential gap within the range of the pressure sensing element Move the pointer to the desired pressure where the output of the controller should switch from zero to full supply pressure with rising process pressure direct acting controllers or with falling process pressure reverse acting controllers Adjustment Proportional Band The proportional band adjustment shown in figure 4 determines the width of the differential gap The width of the gap is the difference between the process pressures at which the controller output will switch from zero to full supply pressure or from full supply pressure to zero The relationship between the proportional band dial setting and the differential gap is shown in figure 10 Figure 10 Differential Gap Adjustment for Differential Gap Controllers LT L S pa LIT T3 Lem LI T Las qs REX PROPORTIONAL BAND KNOB SETTING DIFFERENTIAL GAP PERCENT OF ELEMENT RANGE A2202 3 Calibration Differential Gap Controllers The output of each controller is checked at the factory before the unit is shipped Before placing the controller in control of a process loop check to verify that the controller is calibrated correctly for the application The controller must be connected open loop Open loop The controller output pressure changes must be dead ended into a pressure gauge 1 Temporarily convert the differen
65. t movement of the beam is caused by expansion or contraction of the bellows or differential bellows Proportional Only Controllers As shown in figure 13 supply pressure enters the relay and bleeds through the fixed orifice before escaping through the nozzle Nozzle pressure also registers on the large relay diaphragm and loading pressure controller output pressure registers on the small relay diaphragm Figure 13 Schematic of Reverse Acting Proportional Only and Proportional Plus Reset Controllers CONSTANT SUPPLY PRESSURE INLET END OF RELAY VALVE SMALL DIAPHRAGM LARGE DIAPHRAGM RESTRICTION PRESSURE SETTING KNOB PRESSURE SETTING DIAL EXHAUST END OF RELAY BOURDON TUBE RESET BELLOWS FIXED PIVOT TO FINAL CONTROL ELEMENT PROPORTIONAL BELLOWS BELLOWS VALVE SENSED PRESSURE PROPORTIONAL ONLY E ae ro CONTROLLER SENSED PRESSURE GE23696 GE34724 A E1062 xJOUTPUT PRESSURE NOZZLE PRESSURE RESET PRESSURE A change in the process pressure moves the beam and flapper with respect to the nozzle by either expanding or contracting the Bourdon tube arc An increasing process pressure with direct action or decreasing pressure with reverse action produces a nozzle flapper restriction that increases the loading on the large relay diaphragm and opens the relay valve Additional supply pressure flows through the relay chamber to increase the loading press
66. t pressure increases feedback pressure moves the flapper closer to the nozzle to again increase controller output pressure This process continues rapidly until the controller output pressure is at the upper range limit The action of a differential gap controller is so rapid that output pressure changes from zero to maximum as soon as the switching point is reached 28 Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 The action is similar with falling output pressure Lower feedback pressure lowers the bellows pressure which moves the flapper away from the nozzle This again reduces the output pressure and continues until the output pressure is zero Figure 14 Schematic of Reverse Acting Proportional Plus Reset Controller with Anti Reset Windup ARROW UP RELIEVES ARROW DOWN RELIEVES ON INCREASING OUTPUT ON DECREASING OUTPUT OUTPUT AT ZERO OUTPUT AT SUPPLY DURING SHUTDOWN DURING SHUTDOWN CONSTANT SUPPLY PRESSURE DIFFERENTIAL RELIEF VALVE PRESSURE SETTING KNOB PRESSURE SETTING DIAL RESTRICTION zz waz A RESET BELLOWS TO FINAL CONTROL ELEMENT CANTILEVER SPRING PROPORTIONAL BELLOWS SENSED PRESSURE SENSED PRESSURE 22 22 OUTPUT PRESSURE NOZZLEPRESSURE RESET PRESSURE GE23697 A GE34724 A E1063 Transmitters Action of a pneumatic transmitter is similar to that of a proportional only controller Since the outpu
67. t pressure of the transmitter has no effect on the process pressure transmitter output pressure is a proportional measure of the process pressure The proportional band adjustment determines the span of the transmitter and the pressure setting mechanism determines the zero of the transmitter 29 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 Maintenance If the installation includes a Fisher 67 filter regulator periodically open the drain on the filter regulator to drain accumulated moisture Also push the spring out cleaning wire on the relay orifice Check the opening of the vent assembly key 28 figure 2 or the opening of the remote vent pipe if one is used If necessary clean the openings Parts are subject to normal wear and must be inspected and replaced as necessary The frequency of inspection and parts replacement depends upon the severity of the service conditions A WARNING The following maintenance procedures require taking the controller out of service To avoid personal injury and property damage caused by the release of pressure or process fluid observe the following before starting maintenance e Always wear protective clothing gloves and eyewear e Provide some temporary means of control for the process before taking the controller out of service e Provide a means of containing the process fluid before removing any measurement devices from the process Use lock out procedures to b
68. the standard construction If the process temperature is outside the ambient operating range of the controller the length of the capillary tube run from the sensor point to the controller process input may be adjusted to protect the controller from the process temperature Typical Ambient Temperature Operating Influence Proportional Control only 3 0 of output span for each 28 C 50 F change in temperature between 40 and 71 C 40 and 160 F for a controller set at 100 proportional band Proportional Plus Reset Control 2 0 of output span for each 28 C 50 F change in temperature between 40 and 71 C 40 and 160 F for a controller set at 100 proportional band Transmitters only 3 0 of output span for each 28 C 50 F change in temperature between 40 and 71 C 40 and 160 F for a transmitter set at 100 span Hazardous Area Classification Complies with the requirements of ATEX Group II Category 2 Gas and Dust C o u2ap Refer to figure 26 for location of ATEX marking Approximate Weight 8 2 kg 18 pounds Declaration of SEP Fisher Controls International LLC declares this product to be in compliance with Article 3 paragraph 3 of the Pressure Equipment Directive PED 97 23 EC It was designed and manufactured in accordance with Sound Engineering Practice SEP and cannot bear the CE marking related to PED compliance However the product may bear the CE marking to indicate complianc
69. ther output pressure ranges such as 0 4 to 2 0 bar 6 to 30 psig adjust the values to match the application 24 Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 Provide a process pressure source capable of simulating the process pressure range of the transmitter If an output pressure gauge is not provided install a suitable pressure gauge for calibration purposes Connect a pressure source to the supply pressure regulator and be sure the regulator is delivering the correct supply pressure to the transmitter Note For stability some transmitter applications will require additional volume than just the gauge Provide a minimum volume of approximately 25 cm 1 5 in3 or greater if stability is a problem Unless otherwise indicated key number locations are shown in figure 11 1 Complete the above connections and provide a process pressure equal to the sensing element range 2 Rotate the span adjustment knob to the maximum setting on the dial 100 percent span 3 Verify that the calibration adjuster screws key 48 are at mid position in the calibration adjuster key 36 slots Depending upon the transmitter action perform one or the other of the following procedures For reverse acting transmitters 4 Rotate the zero adjustment knob to zero 5 Apply an input pressure equal to the sensing element upper range limit 6 Adjust the nozzle key 57 until the transmitter output pressure is at 0 2 bar 3 ps
70. ther to the CONTROL connection on the back of the case or to the connection on the left side of the case shown in figure 2 depending on the instrument application Plug the unused connection For differential pressure instruments Connect the low pressure line to the CONTROL connection on the side of the case and the high pressure line to the CONTROL connection on the back of the case as shown in figure 2 When installing process piping follow accepted practices to ensure accurate transmission of the process pressure to the controller or transmitter Install shutoff valves vents drains or seal systems as needed in the process pressure lines If the instrument is located such that the adjacent process pressure lines will be approximately horizontal the lines should slope downward to the instrument for liquid filled lines and upward to instruments for gas filled lines This will minimize the possibility of air becoming trapped in the sensor with liquid filled lines or of condensation becoming trapped with gas filled lines The recommended slope is 83 mm per meter 1 inch per foot If a controller is being used in conjunction with a control valve to control pipeline pressure connect the process pressure line in a straight section of pipe approximately 10 pipe diameters from the valve but away from bends elbows and areas of abnormal fluid velocities For pressure reducing service the process line must be connected downstream of the valve For press
71. tial gap controller to proportional only controller by disconnecting the proportional tubing key 25 figure 16 from the mounting base Reinstall the tubing into the other connection in the mounting base Remove the proportional band assembly and invert it as shown in figure 16 Do not invert the reversing block key 37 figure 16 2 Temporarily invert the proportional band assembly refer to figure 17 a Turn the proportional band assembly key 73 to 10 b Unscrew the spring adjustor key 65 removing the bias spring key 70 and washers key 62 with it 21 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 c Unclip the lock spring key 72 Remove the indicator scale key 69 and proportional band adjustment knob key 73 d Remove the gain adjustment bar key 63 Flip it over so it attaches to the opposite side of the cantilever spring key 8 as shown in figure 16 and screw it back down e Flip over the indicator scale key 69 install it and the proportional band adjustment knob key 73 as a unit Snap in the lock spring key 72 f Tighten down the spring adjustor key 65 with the bias spring key 70 and washers key 62 until it stops against the gain adjustment bar key 63 g Turn the proportional band adjustment knob to the 10 setting If it cannot be turned to the 10 setting loosen the spring adjustor key 65 3 Calibrate using the calibration procedure for proportional only contr
72. tor 2 Supply and Output Pressure Gauge w o process pressure gauge 1 8 inch connecting stem 2 req d Dual scale Brass Plastic 0 2 0 kg cm and 0 30 psig 11B8577X042 0 4 0 kg cm and 0 60 psig 11B8577X052 SST 0 2 0 kg cm and 0 30 psig 11B8583X032 0 4 0 kg cm and 0 60 psig 11B8583X052 Triple scale Brass Plastic 0 2 0 bar 0 0 2 MPa and 0 30 psig 11B8577X012 0 4 0 bar 0 0 4 MPa and 0 60 psig 11B8577X022 SST 0 2 0 kg cm and 0 30 psig 11B8583X012 0 4 0 kg cm and 0 60 psig 11B8583X022 2 Output Pressure Gauge w process pressure gauge 1 8 inch connecting stem Brass Plastic Triple scale 0 2 0 bar 0 0 2 MPa and 0 30 psig 11B8577X012 0 4 0 bar 0 0 4 MPa and 0 60 psig 11B8577X022 3 Supply Pressure Gauge w process pressure gauge 1 4 inch connecting stem Brass Plastic Triple scale 0 2 0 bar 0 0 2 MPa and 0 30 psig 11B8579X022 0 4 0 bar 0 0 4 MPa and 0 60 psig 11B8579X032 Note Controllers with bellows sensing element use only the 2 0 bar 0 to 0 2 MPa and 0 to 0 to 30 psig triple scale brass and stainless steel process pressure gauges Differential pressure controllers do not use a process pressure gauge 4 Process Pressure Indicator Gauge use only when specified Triple scale Stainless steel 0 2 0 bar 0 0 2 MPa and 0 30 psig 11B8584X022 0 20 bar 0 2 0 MPa and 0 300 psig 11B8584X012 0 69 bar 0 6 9 MPa and 0 1000 psig 11B8584X032 High Temp silicone 1N873804142 41 C1 Controllers and Transmitters
73. ure on the control valve actuator A decreasing process pressure with direct action or increasing pressure with reverse action produces a nozzle flapper opening that bleeds off pressure on the large relay diaphragm and opens the relay valve to exhaust controller output pressure from the actuator 27 C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 This controller output pressure change feeds back to the proportional bellows countering the pressure change in the nozzle and equalizes the relay diaphragm pressure differential The relay valve maintains a new loading pressure according to the change in sensed pressure If the proportional band adjustment is at its maximum setting 10 the cantilever spring in the proportional band assembly has a low spring rate allowing more feedback motion to be transferred from the proportional bellows for a change in output pressure As the effective length of the cantilever is reduced its spring rate increases causing less feedback motion from proportional bellows Setting the cantilever spring to its maximum length results in a proportional band of 100 The lower the proportional band adjustment the shorter the effective length of the cantilever spring The spring rate of the cantilever spring increases as its length shortens allowing less motion to be transferred from the bellows to the beam and flapper for a given change in output pressure Proportional Plus Reset Controllers
74. ure relief service the process pressure line must be connected upstream of the control valve Install a needle valve in the process pressure line to dampen pulsations 10 Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 Vent Assembly Personal injury or property damage could result from fire or explosion of accumulated gas or from contact with hazardous gas if a flammable or hazardous gas is used as the supply pressure medium Because the instrument case and cover assembly do not form a gas tight seal when the assembly is enclosed a remote vent line adequate ventilation and necessary safety measures should be used to prevent the accumulation of flammable or hazardous gas However a remote vent pipe alone cannot be relied upon to remove all flammable and hazardous gas Vent line piping should comply with local and regional codes and should be be as short as possible with adequate inside diameter and few bends to reduce case pressure buildup CAUTION When installing a remote vent pipe take care not to overtighten the pipe in the vent connection Excessive torque will damage the threads in the connection The vent assembly key 28 figure 2 or the end of a remote vent pipe must be protected against the entrance of all foreign matter that could plug the vent Use 13 mm 1 2 inch pipe for the remote vent pipe if one is required Check the vent periodically to be certain it has not become plugged Controller Op
75. ut pressure is not between 0 6 and 0 7 bar 8 and 10 psig adjust the controller span by loosening the two adjusting screws key 48 and moving the calibration adjuster key 36 a small distance as indicated in figure 8 12 Repeat steps 6 through 11 until no further adjustment is necessary 13 For C1P and C1B controllers with anti reset windup remove the two machine screws anti reset windup cover and two O rings installed in step 1 of this procedure Install the anti reset windup assembly key 190 with the arrow pointing in the direction recorded in step 1 14 Proceed to the Startup procedures for proportional plus reset controllers Figure 8 Reverse Acting Controller Span Adjustment Proportional Plus Reset Controllers IF OUTPUT IS ABOVE BELOW 8TO 10PSIG 8TO 10 PSIG 0 6 TO 0 7 BAR 0 6 TO 0 7 BAR MOVE ADJUSTER atus p MOVE ADJUSTER RIGHT FLAPPER NOZZLE NOTE 3 TO 15 PSIG 0 2 TO 1 0 BAR OUTPUT SHOWN FOR 6 TO 30 PSIG 0 4 TO 2 0 BAR OUTPUT ADJUST VALUES AS APPROPRIATE A6155 1 For direct acting controllers 6 Apply an input pressure equal to the sensing element lower range value 7 Rotate the pressure setting knob to the minimum value 8 Adjust the nozzle key 54 until the controller output pressure is between 0 6 and 0 7 bar 8 and 10 psig 9 Apply an input pressure equal to the sensing element upper range value 10 Rotate the pressure setting knob to the maximum value Note When performin
76. verse to Direct Action 34 Relay Replacement ce eee eee eees 36 Changing Output Signal Range 37 Parts Ordering 0c cee ee cece eeeeees 40 es EMERSON www Fisher com Process Management C1 Controllers and Transmitters Instruction Manual May 2014 D103292X012 Contents Continued Parts Kits 5 scel c eie Ue ee RYE 41 partsllst i e EXPANDS 41 CommonParts arreso ea hae ee EE eee 41 Mounting Parts for Panel Wall Pipestand or Actuator Mounting 2 05 50 Introduction Scope of Manual This instruction manual provides installation operating maintenance and parts information for the Fisher C1 pressure controllers and transmitters shown in figure 1 Refer to separate instruction manuals for information regarding the control valve actuator and accessories Do not install operate or maintain C1 pressure controllers and transmitters without first being fully trained and qualified in valve actuator and accessory installation operation and maintenance To avoid personal injury and property damage it is important to carefully read understand and follow all the contents of this manual including all safety cautions and warnings If you have any questions about these instructions contact your Emerson Process Management sales office before proceeding Description The C1 pneumatic pressure controllers and transmitters use a bellows or Bourdon tube sensing el
77. wners 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 Process Management Marshalltown lowa 50158 USA Sorocaba 18087 Brazil F Chatham Kent ME4 4QZ UK P Dubai United Arab Emirates eS Singapore 128461 Singapore www Fisher com EMERSON Pr ess Manaaement 2008 2014 Fisher Controls International LLC All rights reserved Frocess Mana g emen t
78. y 2014 D103292X012 Startup Proportional Plus Reset Controllers General Tuning Guidelines Calibrate the controller prior to this procedure 1 Besure that the supply pressure regulator is delivering the proper supply pressure to the controller 2 Rotate the pressure setting knob to the desired set point 3 Start with a reset setting of 0 05 minutes per repeat m r for fast processes and 0 5 m r for slow processes 4 Setthe proportional band adjustment to 100 percent for fast processes example liquid pressure or liquid flow For a slow process example temperature calculate the percentage from the equation below For a slow process determine the initial proportional band setting in percent from the following equation 2 x Allowable Overshoot 100 PB Pressure Span For example 2 x 0 14 bar Som x 100 13 2 1 bar 8 2X2 PSIG y io0x 13 30 psig 1 3 proportional band setting 5 Proportional Action Disturb the system by tapping the flapper lightly or change the set point a small amount and check for system cycling If the system does not cycle then lower the proportional band raising the gain and disturb the system again Continue this procedure until the system cycles At that point double the proportional band setting and begin tuning the reset 6 Reset Action Disturb the system If the system does not cycle then speed up the reset and disturb the system again Continue this procedure until the s
79. ystem cycles When the system cycles multiply the reset time setting by a factor of three 3 and slow the reset down to the new value The reset is now tuned This tuning procedure may be too conservative for some systems The recommended proportional band and reset setting should be checked for stability by introducing a disturbance and monitoring the process as previously described For some applications tighter control may be desirable Differential Gap Controllers This section describes the adjustments and procedures for calibration and startup The adjustment locations are shown in figure 4 unless otherwise specified The output of each controller is checked at the factory before the instrument is shipped To convert a differential gap controller to a proportional only controller or vice versa refer to the appropriate procedure in the Maintenance section If the process pressure can be varied through all or part of the sensing element range or through the two desired switching points use the process pressure for calibration If not provide a pressure source to simulate the process pressure range for calibration procedures 20 Instruction Manual C1 Controllers and Transmitters D103292X012 May 2014 To better understand the adjustments and overall operation of the controller refer to the Principle of Operation section in this manual for differential gap controllers and the schematic diagram in figure 13 Adjustments Adjustmen

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