Emerson Rosemount 644h, Справочное руководство, Страница: 17 / 78

Reference Manual
00809-0100-4728, Rev HA
December 2002
2-7
Models 644H and 644R
Rail Mount Transmitter with Threaded Sensor
1. Attach the transmitter to a suitable rail or panel.
2. Attach the thermowell to the pipe or process container wall. Install
and tighten the thermowell before applying pressure.
3. Attach necessary extension nipples and adapters. Seal the nipple
and adapter threads with silicone tape.
4. Screw the sensor into the thermowell. Install drain seals if required for
severe environments or to satisfy code requirements.
5. Screw the connection head to the sensor.
6. Attach the sensor lead wires to the connection head terminals.
7. Attach additional sensor lead wires from the connection head to the
transmitter.
8. Attach and tighten the connection head cover. Enclosure covers must
be fully engaged to meet explosion-proof requirements.
9. Set the transmitter failure mode switch
10. Attach the sensor wires to the transmitter (see Figure 2-8 on
page 2-10).
A = Rail Mount Transmitter C = Standard Extension
B = Threaded Sensor Connection Head D = Threaded Style Sensor
E = Threaded Thermowell
A
D
E
C
B