Table 12 Process Connections - Honeywell ST 3000 Installation Manual

4.2 Piping ST 3000 Transmitter,
ATTENTION
Process connections
36
Care must be taken when installing transmitters on hot processes. The
operating temperature limits for the device (as listed in Table 6) must
not be exceeded. Impulse piping may be used to reduce the temperature
of the process that comes into contact with the transmitter meter body.
As a general rule there is a 56 degree C drop (100 °F) in the temperature
of the process for every foot (305 mm) of ½ inch uninsulated piping.
Table 12 describes typical process connections for a given type of
transmitter.
Table 12 Process Connections
Transmitter Type
Differential • Process heads with 1/4-inch NPT female connection.
Pressure
• Flange adapters and manifolds with 1/2-inch female
• Models with pseudo flange on one side include
Gauge Pressure • Process head with 1/2-inch NPT female connection
• In-line 1/2-inch NPT female connection (STGxxL).
• Process heads with 1/4-inch NPT female connection
• Flange adapters and manifolds with 1/2-inch female
• 2-inch Sanitary Tri-Clamp (STG1xT).
• Flush mount in 1-inch weld sleeve, with O-ring and
• Process head with 1/2-inch NPT female connection.
Absolute Pressure
Flange Mounted • Small flange 1/2-inch, 1-, 1 ½ - and 2-inch (STFxxT)
Liquid Level
• 2, 3- or 4-inch flange with flush or 2-, 4- or 6-inch
• DN 50, 80, or 100 PN 40 flange with flush or 2, 4 or 6
Remote See Model Selection Guide for description of available
Diaphragm Seals Flanged, Threaded, Chemical Tee, Saddle, and Sanitary
process connections.
* Reference side has standard differential pressure process head.
ST 3000 Release 300 Installation Guide
Continued
Process Connection
connection are optional.
2- or 3-inch ANSI class 150 flange.
(Series 100 transmitters).
(STG9x4).
connections are optional (STG9x4).
locking bolt (STG9xP).
(STAx2, x40).
extended diaphragm (See Table 13) on high pressure
side.*
inch extended diaphragm (See Table 13) on High
Pressure Side*.
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