Rosemount 3244MV, Справочное руководство

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Reference Manual
00809-0100-4799, Rev BA
September 2002
Model 3244MV
2-5
For transmitter locations remote from the sensor, use conduit or suitable
shielded cable and cable glands between the sensor and transmitter. The
transmitter accepts male conduit fittings with
1
/
2
–14 NPT, M 20 1.5 (CM 20),
PG 13.5 (PG 11), or JIS G
1
/
2
threads.
Typical North American
Installation
1. Mount the thermowell to the pipe or process container wall. Be sure to
tighten thermowells and sensors. Perform a leak check before starting
the process.
2. Attach any necessary unions, couplings, and extension fittings. Be sure
to seal the fitting threads with silicone or tape (if required).
3. Screw the sensor into the thermowell or directly into the process
(depending on installation requirements).
4. Verify all sealing requirements for severe environments or to satisfy code
requirements.
5. Attach the transmitter to the thermowell/sensor assembly. Be sure to
seal all threads with silicone or tape (if required).
6. Pull sensor leads through the extensions, unions, or couplings into the
terminal side of the transmitter housing.
7. Install field wiring conduit to the remaining transmitter conduit entry.
8. Pull the field wiring leads into the terminal side of the transmitter housing.
Avoid contact with the leads and terminals.
9. Attach the sensor leads to the transmitter sensor terminals. Attach the
power leads to the transmitter power terminals. Avoid contact with the
leads and terminals.
10. Attach and tighten both transmitter covers. Both transmitter covers must
be fully engaged to meet explosion-proof requirements.
Figure 2-4. Typical North
American Mounting
Configuration.
NOTE
The National Electrical Code requires that a barrier or seal be used in addition
to the primary (sensor) seal to prevent process fluid from entering the
electrical conduit and continuing to the control room. Professional safety
assistance is recommended for installation in potentially hazardous
processes.
Thermowell
Extension
Conduit for Field
Wiring (dc power)
3.2
(81)
Extension
Fitting
Length
Union or
Coupling
NOTE: Dimensions are in inches (millimeters).
3144
-043
3B