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6/08 ST 3000 Release 300 and SFC Model STS103 User’s Manual 147
7.11 Liquid Level Measurement with DP Transmitter with
Remote Seals
Procedure
The procedure in Table 45 outlines the steps for starting up a differential
pressure (DP) type transmitter with remote diaphragm seals in a liquid
level measurement application. Refer to Figure 48 for the piping
arrangement identification and Figure 38 for typical SFC and meter
connections.
Figure 48 Typical Piping Arrangement for Liquid Level Measurement with DP Type
Transmitter with Remote Seals
HP Side
Zero Level (empty)
Full Level
LP Side
H2
Fixed
Ref. Leg
Differential
Pressure
Transmitter with
remote seals
Variable
Head H1
ATTENTION
For the procedure in Table 45, we are assuming that the tank is empty
and the remote seal flanges are installed at their final positions. The
transmitter is a model STR93D or STR12D with a compound
characterized meter body. The DP transmitter has its high pressure (HP)
side connected to the tank’s lower flange and low pressure (LP) side
connected to the upper flange. (Note that connections would be reversed
for a model STR13D transmitter or a model STR12D transmitter
without a compound characterized meter body.)
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