Figure 10 Typical Flange Mounted Transmitter Installation - Honeywell ST 3000 User Manual

4.2 Mounting ST 3000 Transmitter,
Flange mounting
ATTENTION
It is the End User's responsibility to provide a flange gasket and mounting hardware that are suitable for the
transmitter's service condition.
To prevent degradation of performance in Flush-Mounted Flanged Transmitters, exercise care to ensure
that the internal diameter of the flange gasket does not obstruct the sensing diaphragm.
To prevent degradation of performance in Extended Mount Flanged Transmitters, ensure that there
is sufficient clearance in front of the sensing diaphragm body.
February 2012 ST 3000 Release 300 and SFC Model STS103 User's Manual
To mount a flange mounted transmitter model, bolt the transmitter's
flange to the flange pipe on the wall of the tank.
On insulated tanks, remove enough insulation to accommodate the
flange extension.
Figure 10 shows a typical installation for a transmitter with the flange
on the high pressure (HP) side so the HP diaphragm is in direct contact
with the process fluid. The low pressure (LP) side of the transmitter is
vented to atmosphere (no connection).
Figure 10 Typical Flange Mounted Transmitter Installation
Maximum Level
Variable
Head H1
Minimum Level
Continued
Attention: Dotted area indicates use
with closed tank with reference leg.
HP Side
LP Side vented
mounted
to atmosphere
to tank
Continued on next page
Reference
Leg
33