Barton 227C, Руководство по установке

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MODEL 227C
DIFFERENTIAL PRESSURE INDICATOR
w/224C DPU
Installation Manual
Version 00K25c
ID#10120
11/2000
SECTION 1 - INTRODUCTION
General
The Model 227C DP Indicator measures liquid flow or liquid level. For flow
measurements, the instrument is connected to the low and high pressure sides
of a primary device (e.g., orifice plate, venturi tube, or flow tube) located in the
process run. For liquid level, the instrument is connected to measure changes in
differential pressure relative to variations of liquid height in a vessel.
Theory of Operation
The bellows within the DPU moves in response to changes in the differential
pressure measured at the primary device installed in the process system.
Movement of the bellows (in direction of decreasing pressure) is mechanically
transferred to the indicator mechanism, which in turn positions the indicating
pointer.
SAFETY
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: 3 , 6 , and 7 .
WARNING notes indicate the presence of a hazard which can cause severe
personal injury, death, or substantial property damage if warning is ignored.
CONTENTS
Section 1 - Introduction ............................................................. Page 1
Section 2 - Installation ............................................................... Page 2
Section 3 - Maintenance ............................................................ Page 4
Section 4 - Troubleshooting ....................................................... Page 9
Section 5 - Installation Drawings................................................. Page 10
Section 6 - Parts/Drawing List ................................................... Page 14
DPU Specifications ................................................................... Page 19
Instrument Specifications ........................................................... Back Page