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MODEL 202E
DIFFERENTIAL PRESSURE RECORDERS
User Manual
Manual No. 10060, Rev. B
05/2004
CONTENTS
Section 1 - Introduction ................................................................. Page 1
Pressure Elements/Chart Drive Tables ..................................... Page 5/6
Section 2 - Installation/Calibration Check ................................... Page 7
Section 3 - Maintenance & Calibration ........................................ Page 13
Section 4 - Troubleshooting ........................................................... Page 26
Section 5 - Installation Drawings .................................................. Page 28
Section 6 - Parts Drawing/List ....................................................... Page 34
Specification (DPU/Instrument)................................................... Page 39
SECTION 1 - INTRODUCTION
General
The Barton
®
Model 202E single DP Flow Recorders measure and record system
operation parameters including gas and liquid flow rate, liquid level in a vessel,
and other system variables that can be measured by differential pressure and
static pressure methods.
Main Components
Differential Pressure Unit
The Barton
®
Model 199 Differential Pressure Unit (DPU) actuates the recorders.
The DPU is a dual bellows assembly enclosed within pressure housings. The
bellows are liquid filled and withstand overranges equal to the working pressure
of the housing without calibration change. Movement of the bellows is transmit-
ted through a torque tube from the DPU to the recording mechanism. The
torque tube is hermetically sealed to eliminate friction and leakage; it does not
require lubrication.
Before installing this instrument, become familiar with the installation instructions
in Section 2. WARNING notes that appear on the following pages of this manual
should be reviewed before proceeding: 8, 20, 21, 22, and 25.
SAFETY !
WARNING notes indicate the presence of a hazard which can cause severe personal injury, death, or substantial
property damage if warning is ignored.
CAUTION notes indicate the presence of a hazard which can cause moderate personal injury or property
damage if warning is ignored.
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