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Fisher 2502 Series Level-Trol User Manual

Fisher 2502 Series Level-Trol
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D200126X012
250
2 S
erie
s L
evel-Trol
C
ontroller
Contents
Introduction
2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller Action 2.
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation%2
249 Series Sensors 2.
. . . . . . . . . . . . . . . . . . . . . . . . .
Uncrating 4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Controller Orientation 4.
. . . . . . . . . . . . . . . . . . . . . . . .
Mounting Caged Sensors 4.
. . . . . . . . . . . . . . . . . . . .
Mounting Cageless Sensors 5.
. . . . . . . . . . . . . . . . . .
Side-Mounted Sensor 7.
. . . . . . . . . . . . . . . . . . . . . .
Top-Mounted Sensor 7.
. . . . . . . . . . . . . . . . . . . . . . .
Special Constructions 7.
. . . . . . . . . . . . . . . . . . . . . . .
Temperature-Compensated Displacer 7.
. . . . . . . .
Piezometer Ring 8.
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Regulator Supply Pressure 8.
. . . . . . . . . . . . . . . . . . .
Prestartup Checks
9.
. . . . . . . . . . . . . . . . . . . . . .
Adjustments 10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Level Set Adjustment 10.
. . . . . . . . . . . . . . . . . . . . .
Proportional Band Adjustment 10.
. . . . . . . . . . . . .
Reset Adjustment 10.
. . . . . . . . . . . . . . . . . . . . . . . .
Differential Relief Adjustment 10.
. . . . . . . . . . . . . .
Calibration
11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precalibration 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
Maintenance
15.
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 16
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Removing Controller from Sensor 16.
. . . . . . . . . . .
Changing Mounting Method 18.
. . . . . . . . . . . . . . . .
Installing Controller on Sensor 19.
. . . . . . . . . . . . . .
Changing Proportional, Reset, or
Differential Relief Valve 19.
. . . . . . . . . . . . . . . . . . .
Testing Relay Dead Band 19.
. . . . . . . . . . . . . . . . . .
Changing Relay 20.
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Bellows 20.
. . . . . . . . . . . . . . . . . . . . . . . .
Reversing Action 20.
. . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembling Relay 20.
. . . . . . . . . . . . . . . . . . . . . .
Parts Ordering
21.
. . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Kits
21.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List
21.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instruction Manual
Form 1446
June 1994
2502 Series

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Fisher 2502 Series Level-Trol Specifications

General IconGeneral
BrandFisher
Model2502 Series Level-Trol
CategoryController
LanguageEnglish

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