Emerson Rosemount 644h Manual descargar pdf (Pagina 18)

2-8

Rosemount Inc

Rail Mount Transmitter with Threaded Sensor

Refer to Volume 1 of the Rosemount Sensors Product Data Sheet (document

number 00813-0100-2654) for complete sensor and mounting accessory

information.

To complete the assembly, follow the procedure described below.

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 (see Figure 2-11 on page 2-11).

10. Attach the sensor and power leads to the transmitter. Avoid contact with leads

and terminals.

Figure 2-7. Typical Rail Mount Transmitter Mounting Configuration Using

Threaded Style Sensor and Assembly

Rail Mount

Transmitter

Threaded

Style Sensor

Threaded

Thermowell

Standard Extension

Threaded Sensor

Connection Head

644-0000A04B

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Emerson Rosemount 644h Manual Pagina 18