4.2Piping ST 3000 Transmitter, Continued

 

ATTENTION

 

 

 

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.

Process connections

 

 

 

 

 

 

Table 12 describes typical process connections for a given type of

 

 

 

 

 

transmitter.

 

 

 

 

 

Table 12

Process Connections

 

 

 

 

 

 

 

 

 

 

 

 

Transmitter Type

Process Connection

 

 

 

 

 

 

 

 

 

 

 

 

 

Differential

 

• Process heads with 1/4-inch NPT female connection.

 

 

 

 

 

Pressure

 

• Flange adapters and manifolds with 1/2-inch female

 

 

 

 

 

 

 

 

 

 

 

 

 

 

connection are optional.

 

 

 

 

 

 

 

• Models with pseudo flange on one side include

 

 

 

 

 

 

 

2- or 3-inch ANSI class 150 flange.

 

 

 

 

 

Gauge Pressure

• Process head with 1/2-inch NPT female connection

 

 

 

 

 

 

 

(Series 100 transmitters).

 

 

 

 

 

 

 

• In-line 1/2-inch NPT female connection (STGxxL).

 

 

 

 

 

 

 

• Process heads with 1/4-inch NPT female connection

 

 

 

 

 

 

 

(STG9x4).

 

 

 

 

 

 

 

• Flange adapters and manifolds with 1/2-inch female

 

 

 

 

 

 

 

connections are optional (STG9x4).

 

 

 

 

 

 

 

• 2-inch Sanitary Tri-Clamp (STG1xT).

 

 

 

 

 

 

 

• Flush mount in 1-inch weld sleeve, with O-ring and

 

 

 

 

 

 

 

locking bolt (STG9xP).

 

 

 

 

 

Absolute Pressure

• Process head with 1/2-inch NPT female connection.

 

 

 

 

 

 

 

(STAx2, x40).

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

extended diaphragm (See Table 13) on high pressure

 

 

 

 

 

 

 

side.*

 

 

 

 

 

 

 

• DN 50, 80, or 100 PN 40 flange with flush or 2, 4 or 6

 

 

 

 

 

 

 

inch extended diaphragm (See Table 13) on High

 

 

 

 

 

 

 

Pressure Side*.

 

 

 

 

 

 

 

 

 

 

 

 

 

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.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Continued on next page

36

ST 3000 Release 300 Installation Guide

2/05