Fisher 2502 Series Level-Trol Instruction Manual Download Page 23

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2502 Series

Key

Description

Part Number

Retaining Ring, steel, pl (zinc case

cover only) (2 req’d)

1A4658 28992

14*

Gauge Glass, glass, (2 req’d)

0T0192 06042

15*

Gauge Glass Gasket, neoprene, (2 req’d)

0T0191 04082

Instruction Label, aluminum

29A2834 X012

19*

Pressure Gauge (2 req’d)

Brass, triple scale

0-30 psig/0-0.2MPa/0-2.0 bar

11B8577 X012

0-60 psig/0-0.4MPa/0-4.0 bar

11B8577 X022

Stainless steel, triple scale

0-30 psig/0-0.2MPa/0-2.0 bar

11B8583 X012

0-60 psig/0-0.4MPa/0-4.0 bar

11B8583 X022

21*

Cover Gasket, nitrile

1C9198 06432

22*

Relay Gasket

Standard, neoprene

1C8974 03012

High-temperature, rubber

1N8738 04142

Relay Base, aluminum

47A0950 X012

24*

Relay Base Gasket (not shown)

Standard, neoprene

1C8973 03012

High-temperature, rubber

1N8739 04142

Drive-lok Pin, stainless steel

1C8989 X0012

Shaft Clamp Screw, stainless steel

1B4514 35172

Pilot Relay (parts shown under separate heading)

Standard

22B0463 X012

High-temperature

22B0462 X012

Level Adjustment Ass’y

10A8939 X0A2

Proportional Valve Ass’y

10A9122 X042

38*

Filter Gasket (not shown)

Standard, neoprene

1C8986 03012

High-temperature, rubber

1N8740 04142

Cap Screw (not shown), steel, pl (2 req’d)

1C3988 X0022

Hex Nut, stainless steel

1L2863 38992

Screw, steel, pl (4 req’d for Type

2502C and FC, 2 req’d for all others)

1C9419 X0012

Machine Screw, stainless steel, (8 req’d)

1V7435 X0022

Machine Screw, stainless steel (2 req’d)

1A3776 X0012

Machine Screw, steel, pl (4 req’d)

1A5733 X0012

Machine Screw, stainless steel (2 req’d)

1H2675 X0012

Spring (not shown), stainless steel

1J4234 37022

Machine Screw, stainless steel (13 req’d)

1B7839 X0012

Screen, stainless steel

0L0783 43062

Pointer Ass’y (Type 2502C and FC only),

stainless steel/brass, pl

1R2425 X0012

Base Plate, aluminum

(Type 2502C and FC only)

1E8731 11992

Front Plate, aluminum

(Type 2502C and FC only)

1E8732 11992

55*

O-Ring, (3 req’d)

Standard, nitrile

1D6875 06992

High-temperature, fluoroelastomer

1N4304 06382

57*

O-Ring (not shown)

Standard, nitrile

1E2226 06992

High-temperature, fluoroelastomer

1N8387 06382

58*

Nozzle, stainless steel

1U6391 35132

Beam, steel, pl

1K8738 25072

Flapper, Invar

(1)

1J4162 41132

Flapper Base, stainless steel

1J4163 35032

62*

Connecting Link, Monel

1L3796 41012

Sealing Screw, stainless steel

14A5721 X012

Screw, stainless steel

24A5720 X012

65*

Bellows Ass’y, brass (2 req’d)

3 to 15 psig (0.2 to 1.0 bar)

14A5726 X012

6 to 30 psig (0.4 to 2.0 bar)

14A5726 X032

Level Set Arm, steel, pl

1J4164 25072

Operating Arm, steel, pl

1J4165 25072

Operating Arm Base, brass, pl

Types 2502 and 2502F only)

1J4166 14022

Key

Description

Part Number

Level Set Pivot Pin, stainless steel

1J4167 35162

Pivot Base, steel, pl

19A9689 X012

Spring Washer, stainless steel

1H8851 X0012

Washer, stainless steel

Types 2502 and 2502FC, (2 req’d)

1E8730 X0012

Type 2502C (4 req’d)

1E8730 X0012

Washer, stainless steel, (6 req’d)

6100057 0X12

Reset Tubing Ass’y (2 req’d),

copper

1J4169 000A2

stainless steel (2502 and 2502C only)

19A1887 X012

Proportional Band Tubing Ass’y

copper

1J4170 000A2

stainless steel (2502 and 2502C only)

1J4170 X0012

77*

Bellows Frame Gasket (not shown)

Standard, neoprene

1H2654 03012

High-temperature, rubber

1N8735 04142

Spacer (not shown), brass

1J6198 15122

79*

Bellows Gasket (2 req’d)

Standard, neoprene

1D3970 03012

High-temperature, rubber

1N8736 04142

Machine Screw, stainless steel, (4 req’d)

1H2678 X0012

Machine Screw (not shown)

stainless steel, (2 req’d)

1P4373 X0012

Machine Screw, stainless steel, (4 req’d)

1B2752 X0022

Lock Washer, stainless steel (2 req’d)

6100081 0X12

Lock Washer, stainless steel

1C3162 X0012

Cap Screw, stainless steel, not shown (4 req’d)

1A3816 K0012

Machine Screw, stainless steel (2 req’d)

1A8664 X00A2

87*

Link Bearing (not shown)

stainless steel (2 req’d)

1L3795 46202

Machine Screw (not shown),

stainless steel, (4 req’d)

1J4159 X0012

Machine Screw, stainless steel, (2 req’d)

1H8162 X0012

RESET Restriction Valve Ass’y

Types 2502 and 2502C

Standard

19A4357 X012

High-temperature

19A4357 X022

Type 2502F and 2502FC

Standard

19A4359 X012

High-temperature

19A4359 X032

Machine Screw, stainless steel

1B8776 X0012

Bellows Frame, aluminum

2H2653 08012

Bellows Frame Base (not shown), steel, pl

1J4160 25142

Bellows Screw, brass, pl (2 req’d)

1D3976 14022

Bellows Stud (not shown), brass

1H2658 14012

Spacer, zinc

1H2659 44012

Cross Spring, stainless steel (2 req’d)

1H2660 37032

100

Calibration Adjuster, zinc

2H2662 44012

101

Reversing Block, zinc

26A0975 X012

180

Pipe Nipple (not shown) Type 2502F

and 2502FC only), steel

1C5599 26232

181

Relief Tubing Ass’y (Type 2502F and

2502FC only), copper

13A2077 X012

182

Machine Screw, stainless steel, (2 req’d)

Types 2502 and 2502C (not shown)

1B7839 X0012

Type 2502F and 2502FC

1C8969 X0012

183*

O-Ring (2 req’d), Type 2502F and 2502FC only

Standard, nitrile

1D6875 06992

High temperature, fluoroelastomer

1N4304 06382

184

Manifold, aluminum, (Type 2502F and

2502FC only)

23A2072 X012

185

Manifold Nipple, aluminum (Type 2502F only)

13A2074 X012

186

Differential Relief Valve Ass’y (Type 2502F and 2502FC only)

Standard

21A6447 X0A2

High temperature

21A6447 X012

187

Sleeve, plastic

16A0976 X012

*Recommended spare part.

1. Invar is a mark owned by Carpenter Technology Corp.

Summary of Contents for 2502 Series Level-Trol

Page 1: ...n Requirements 11 Wet Calibration 11 Dry Calibration 11 Controller and Torque Tube Arm Disassembly 11 Determining Suspended Weight for Calibration 12 Calibration Procedure 12 Startup 13 Principle of Operation 13 Type 2502 Controller 15 Type 2502F Controller with Reset Relief Valve 15 Figure 1 Type 2502 Controller Mounted on Type 249B Sensor W3121 3 IL TYPE 249B SENSOR TYPE 2502 CONTROLLER Maintena...

Page 2: ... or density increases the output signal S Reverse Action Decreasing liquid or interface level or density increases the output signal A factory sup Figure 2 Guidelines for Use of Optional Heat Insulator Assembly USE INSULATOR CAUTION IF AMBIENT DEWPOINT IS ABOVE PROCESS TEMPERATURE ICE FORMATION MAY CAUSE INSTRUMENT MALFUNCTION AND REDUCE INSULATOR EFFECTIVENESS 0 20 40 60 80 100 120 140 160 0 10 2...

Page 3: ...onal band setting of 100 percent At 35 psig 2 4 bar Minimum 7 scfh 0 2 m3 h at proportional band setting of 0 or 200 percent Maximum 42 scfh 1 1 m3 h at proportional band setting of 100 percent Performance Hysteresis 0 6 percent of output pressure change at 100 percent of proportional band Repeatability 1 0 2 percent of displacer length or displacement force change Dead Band 1 0 05 percent of prop...

Page 4: ...amp ing plate For screwed connections use a 1 2 inch Figure 3 Pressure Connections 1 4 18 NPT SUPPLY CONNECTION ADJUSTING SCREW FILTER WELL DRAIN VALVE LOCKNUT 1 4 18 NPT OUTPUT CONNECTION VENT PRESSURE REGULATOR CD1700 E A1909 1 IL 12 7 mm hexagon wrench to unscrew the damping plate For flanged connections use a screwdriver to pry the damping plate out of the flange A cageless sensor is shipped w...

Page 5: ...level applications position the sen sor so that the line marked FLOAT CENTER on the cage is located as close as possible to the center of the liquid level or interface level range being mea sured For liquid or interface level applications it is advanta geous to install a gauge glass either on the vessel or on the sensor cage if the cage is tapped for a gauge With flanged connections use standard g...

Page 6: ...Note If the controller is not mounted on the sensor refer to the Installing Controller on Sensor section That section also provides instructions for adding a heat insulator to a unit If the sensor has a temperature compensated displacer or piezometer ring refer to the special constructions procedures in this sec tion before proceeding Attach a cageless sensor to a flanged connection on the vessel ...

Page 7: ... shows the installation of a top mounted cage less sensor The displacer may be attached to the dis placer rod before installing the sensor on the vessel Where the displacer diameter is small enough it may be desirable to install a long or sectionalized displacer through the sensor head access hole after the sensor is installed on the vessel Connect the displacer as shown in figure 8 locking the as...

Page 8: ...able pressure re lieving or pressure limiting devices if supply pressure can exceed the maxi mum supply pressure listed in table 1 Personal injury or property danage may occur from an uncontrolled process if the supply medium is not clean dry oil free or non corrosive gas Industry in strument air quality standards describe acceptable dirt oil and moisture con tent Due to the variability in nature ...

Page 9: ...ler out of service Adjustment locations are shown in figure 11 unless otherwise indicted When performing the checks open loop conditions must exist One way to obtain an open loop is to ensure that there is no flow through the final control element Another way to obtain an open loop is to disconnect the controller output signal line and plug the output connection During startup it is necessary to c...

Page 10: ...rmine the dial setting by moving the nameplate slide until the specific gravity on scale B is opposite the displacer volume on scale A Choose the percentage of displac er length as measured from the displacer bottom that you desire the liquid or interface level to cover Locate this percentage on scale D and read up from this per centage to find the raise level dial setting on scale C For example w...

Page 11: ... which the unit was designed To calibrate a controller it is necessary to place the device into operation This may be done on the vessel with the actual service liquid It may also be done in the shop but other means of obtaining a displacement force change must be provided It must be done in the shop if the process variable is not available for calibra tion or if the process cannot be varied for c...

Page 12: ...llowable substitute weight Ws that can be used with your particular construction To determine the total weight that must be suspended from the displacer rod to simulate a certain condition of liquid level or specific gravity solve the following equation Ws Wd 0 0361 V SP GR where Ws Total suspended weight in pounds should never be less than 0 5 pounds For a unit with a horizontal displacer make su...

Page 13: ...nal band knob to zero 4 Set the liquid at the minimum limit dry displacer 5 Turn the raise level knob to zero 6 Adjust the nozzle until output pressure is between 0 and 3 psig for a 3 to 15 psig signal range 0 and 0 2 bar for a 0 2 to 1 0 bar signal range or 0 and 6 psig for a 6 to 30 psig signal range 0 and 0 4 bar for a 0 4 to 2 0 bar signal range 7 Set the liquid at the maximum limit covered di...

Page 14: ...rks Type 2502 Controller As long as inflow and outflow of the vessel are equal the beam and flapper remain motionless and allow sup ply pressure to bleed through the nozzle as fast as it enters the relay through the fixed restriction A level or density change either raises or lowers the displacer and pivots the beam and flapper with respect to the nozzle An increase in level or density with direct...

Page 15: ...set Relief Valve This construction figure 13 has a differential relief valve used to prevent proportional pressure from ex ceeding reset pressure by more than a set value a feature useful for intermittent control applications Pro portional valve output registers in the outer chamber of the relief valve as well as in the proportional bellows ...

Page 16: ...nsors Due to the care Fisher Con trols takes in meeting all manufacturing requirements heat treating dimensional tolerances etc use only replacement parts manufactured or furnished by Fish er Controls WARNING Personal injury or property damage due to sudden release of pressure contact with hazardous liquid fire or explosion can be caused by puncturing heating or repairing a displacer that is retai...

Page 17: ...id lower the vessel level below the torque tube arm before pro ceeding For closed vessels release any pressure that may be above the liquid Also be careful to avoid overloading a thin wall torque tube and or overweight displacer Refer to figure 16 for key number locations 1 Remove the controller as described previously 2 A controller is attached to the sensor in one or the other of the mounting po...

Page 18: ...2 5 Process variable changed 2 5 Insure the process variable has not changed from original calibration settings or displacer not design specific gravity of process 2 5 Change process variable back to original sepcification or recalibrate If necessary provide replacement displacer of correct size and recalibrate 3 Controller cannot attain full output range 3 1 Supply pressure not set correctly 3 1 ...

Page 19: ... sensor 2 Remove the bearing assembly key 12 from the case key 1 3 Carefully slide the controller case straight in guid ing the bearing assembly key 12 operating arm base or pointer assembly key 68 or 51 figure 16 over the rotary shaft and easing an attached heat insulator over the shaft coupling key 36 figure 14 if necessary Se cure the case or insulator to the torque tube arm with the four cap s...

Page 20: ...and install the proportional band adjustment assembly Changing Relay The relay may be removed for cleaning or repair and must be taken off to remove the lower bellows 1 On a controller with indicator assembly loosen the two lower screws key 96 figure 17 of the relay case and slide out the indicator base plate key 53 figure 16 2 Disconnect the tubing key 11 figure 16 from the relay 3 Remove both mo...

Page 21: ...iaphragm so that the lugs on the casing and spacer ring line up and are also lined up with the body lug 10 Install the casing screws and tighten them slowly to ensure a good seal 11 Install the assembled orifice assembly and install the relay according to the Changing Relay section Parts Ordering Whenever corresponding with the Fisher Controls sales office or sales representative about this equip ...

Page 22: ...2502 Series 22 Figure 16 2502 Series Controller Constructions 30A8942 H DOC 43A2366 H DOC 30A8943 H DOC ...

Page 23: ...65 25072 68 Operating Arm Base brass pl Types 2502 and 2502F only 1J4166 14022 Key Description Part Number 69 Level Set Pivot Pin stainless steel 1J4167 35162 70 Pivot Base steel pl 19A9689 X012 71 Spring Washer stainless steel 1H8851 X0012 72 Washer stainless steel Types 2502 and 2502FC 2 req d 1E8730 X0012 Type 2502C 4 req d 1E8730 X0012 74 Washer stainless steel 6 req d 6100057 0X12 75 Reset Tu...

Page 24: ... 92 Relay spring steel pl 1C8961 27012 93 Valve Spring stainless steel 0X0836 37022 94 Spring Plate Gasket Standard neoprene 1H2696 03012 High temperature rubber 1K7000 04142 95 Spring Plate steel pl 1H2697 25072 96 Machine Screw stainless steel 6 req d 1A3294 X0022 97 Machine Screw stainless steel 4 req d 1A8664 X00A2 98 Washer standard only stainless steel 6 req d 1P8261 X0012 99 Bottom Gasket h...

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Fisher 2502 Series Level-Trol, Instruction Manual

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