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C1 Controllers and Transmitters

Instruction Manual

September 2009

36

GE31718

−

A

E1072

NOTES:

ARROW DOWN—RELIEVES ON DECREASING OUTPUT (OUTPUT @ SUPPLY DURING SHUTDOWN)
ARROW UP—RELIEVES ON INCREASING OUTPUT (OUTPUT @ ZERO DURING SHUTDOWN)

KEYS 80, 81, AND 82 ARE NOT SHOWN

PROPORTIONAL-PLUS-RESET CONTROLLER WITH DIFFERENTIAL

RELIEF VALVE ASSEMBLY FOR ANTI-RESET WINDUP

1

1

2

2

SPRING

−

OUT CLEANING WIRE

RELAY ASSEMBLY

Figure 22. Typical Reverse Acting Fisher C1 Proportional

−

Plus

−

Reset Assembly (continued)

(Refer to figure 25 for the Front View of the Case & Cover Assembly)

Key

Description

Part Number

71*

Differential

−

Pressure Bellows (input)

Brass

0

−

200 mbar (0

−

80 inches wc)

2L3790000A2

0

−

0.7 bar (0

−

10 psi)

2L3791000A2

0

−

1.4 bar (0

−

20 psi)

2L3792000A2

Stainless steel,

0

−

2.0 bar (0

−

30 psi)

2L3793000A2

71K Machine Screw

(4)

, steel pl

bellows sensing instruments only (2 req’d)

1A331928982

71L* Bearing

(4)

bellows sensing instruments only (2 req’d)

1L379546202

71M* Link

(4)

 bellows sensing instruments only

1L379641012

72*

Lock Spring, 304L SST

GE32298X012

73

Proportional Band Adjustment Knob, steel/PPS

74

Machine Screw

(1)

, 18

−

8 SST (2 req’d)

75*

Gasket

(1)

Std Temp, chloroprene (2 req’d)

1D397003012

High Temp, silicone (2 req’d)

1N873604142

76*

Nozzle O

−

Ring

(1)

,

Std Temp, nitrile

1E222606992

High Temp, fluorocarbon

1N838706382

Key

Description

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)

1C853806992

*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 104). Also order 
keys 101, 102, and 103 if you do not have them.
4. This part is part of the bellows assembly, key 71.

Содержание C1B

Страница 1: ...Plus Reset Controllers 16 Differential Gap Controllers 16 Adjustments 16 Adjustment Set Point 16 Adjustment Proportional Band 17 Calibration Differential Gap Controllers 17 Startup Differential Gap Co...

Страница 2: ...ications for the C1 Series controllers and transmitters are listed in table 1 Table 2 explains available configurations and options Educational Services For information on available courses for C1 Ser...

Страница 3: ...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 Onl...

Страница 4: ...0 span Hazardous Area Classification Complies with the requirements of ATEX Group II Category 2 Gas and Dust Refer to figure 25 for location of ATEX marking Approximate Weight 8 2 kg 18 pounds Options...

Страница 5: ...0 mbar 0 to 10 inch Hg 0 to 1 0 bar 0 to 30 inch Hg 1 4 2 8 2 8 20 40 40 6 9 100 Compound Pressure 75 mbar vac to 75 mbar 30 inch wc vac to 30 inch wc 500 mbar vac to 500 mbar 15 inch Hg vac to 7 5 ps...

Страница 6: ...ve 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...

Страница 7: ...irements 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 e...

Страница 8: ...r 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 th...

Страница 9: ...n 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 th...

Страница 10: ...s 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 valu...

Страница 11: ...g 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 proc...

Страница 12: ...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 pe...

Страница 13: ...the indicator points to the desired set point pressure value The pressure setting dial will reflect the desired set point if the controller is accurately calibrated Adjustment Proportional Band To ad...

Страница 14: ...es per repeat fastest setting 4 Rotate the proportional band adjustment knob to 1 5 15 percent proportional band 5 Verify that the calibration adjuster screws key 48 are at mid position in the calibra...

Страница 15: ...1 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 IF OUTPUT IS BELOW 8 T...

Страница 16: ...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...

Страница 17: ...the proportional band assembly refer to figure 18 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 c...

Страница 18: ...ressure with rising process pressure In the 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 p...

Страница 19: ...ly solely on the dial setting Monitor the process pressure and output pressure to be sure the desired settings are attained Adjustment Span The span adjustment is graduated from 0 to 10 A setting of 1...

Страница 20: ...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 adjustme...

Страница 21: ...e relay diaphragm and loading pressure controller output pressure registers on the small relay diaphragm A change in the process pressure moves the beam and flapper with respect to the nozzle by eithe...

Страница 22: ...ontrollers 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 w...

Страница 23: ...is 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...

Страница 24: ...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 Note K...

Страница 25: ...SCREW KEYS 40 AND 46 BELLOWS KEY 52 BELLOWS KEY 52 BELLOWS KEY 52 BELLOWS KEY 52 Figure 15 Reverse Direct Acting Tubing Connections for Proportional Controllers or Transmitter 3 Disconnect the contro...

Страница 26: ...acing Bellows Sensing Element 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 Disconnect the t...

Страница 27: ...ect the tubing check all connections for leaks and perform the appropriate calibration procedures Changing Anti Reset Windup Differential Relief Valve Refer to figure 23 for key number locations 1 Not...

Страница 28: ...sure produces decreasing output pressure to direct action increasing process pressure produces increasing output pressure or vice versa Changing the action is accomplished by reversing the positions o...

Страница 29: ...sembly 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...

Страница 30: ...Unscrew the machine screws key 41 figure 21 or 22 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...

Страница 31: ...art required as found in the following parts list WARNING Use only genuine Fisher replacement parts Components that are not supplied by Emerson Process Management should not under any circumstances be...

Страница 32: ...ecified 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 1N873...

Страница 33: ...0 0 400 0 700 0 700 0 1400 0 1400 0 30 0 30 0 60 0 60 0 100 0 100 0 200 0 200 32B1243X012 32B1243X212 2 32B1243X022 32B1243X172 2 32B1243X032 32B1243X202 2 32B1243X042 32B1243X162 2 0 2000 0 2000 0 40...

Страница 34: ...on steel zinc pl 36 Calibration Adjuster 37 Reversing Block 1 Z33520 zinc die casting 38 Sleeve 1 POM polyoxymethylene 39 Beam G10080 carbon steel zinc pl 40 Flapper 1 S30100 SST 41 Machine Screw stee...

Страница 35: ...r 71 Gauge Pressure Bellows input 3 Brass 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 1L3780000A2 0 250 mbar 0 100 inches wc positiv...

Страница 36: ...oportional Band Adjustment Knob steel PPS 74 Machine Screw 1 18 8 SST 2 req d 75 Gasket 1 Std Temp chloroprene 2 req d 1D397003012 High Temp silicone 2 req d 1N873604142 76 Nozzle O Ring 1 Std Temp ni...

Страница 37: ...r 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 ga...

Страница 38: ...E PRESSURE BELLOWS SENSING ELEMENT SIDE VIEW OF SUBASSEMBLY WITH DIFFERENTIAL PRESSURE BELLOWS SENSING ELEMENT NOTES KEYS 33 46 AND 74 ARE NOT SHOWN KEY 52 IS FEEDBACK BELLOWS KEYS 71K 71L 71M ARE PAR...

Страница 39: ...67 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 Key Description 213 Mounting Plate steel continued...

Страница 40: ...Assembly steel For panel or wall mounting 2 req d 252 Cap Screw steel pl For panel or wall mounting 4 req d Note Specify quantity of fittings Connector Brass 1 4 NPT X 1 4 O D tubing 1 4 NPT X 3 8 O D...

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