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2502 Series Level-Trol
Fisher 2502 Series Level-Trol User Manual
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2502
Series
22
Figure
16. 2502 Series Controller Constructions
30A8942-H/DOC
43A2366-H/DOC
30A8943-H/DOC
21
23
Table of Contents
Default Chapter
1
Table of Contents
1
Introduction
2
Scope of Manual
2
Description
2
Specifications
2
Controller Action
2
Installation%
2
249 Series Sensors
2
Form
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
11
Differential Relief Adjustment
11
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
13
Startup
13
Principle of Operation
14
Type 2502 Controller
14
Type 2502F Controller with Reset Relief Valve
15
Maintenance
16
Troubleshooting
16
Removing Controller from Sensor
17
Changing Mounting Method
17
Installing Controller on Sensor
17
Changing Proportional, Reset, or Differential Relief Valve
20
Testing Relay Dead Band
20
Changing Relay
20
Replacing Bellows
20
Reversing Action
20
Disassembling Relay
21
Parts Ordering
21
Parts Kits
21
Parts List
21
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Fisher 2502 Series Level-Trol Specifications
General
Brand
Fisher
Model
2502 Series Level-Trol
Category
Controller
Language
English
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