Installation guide

Quick Installation Guide

00825-0100-4825, Rev DB

February 2011

Rosemount 248

STEP 2 CONTINUED...

Typical North and South American Installation

Head Mount Transmitter with Threaded Sensor

1. Attach the thermowell to the pipe or process container wall. Install and tighten

thermowells before applying process pressure.

2. Attach necessary extension nipples and adapters to the thermowell. Seal the nipple and

adapter threads with silicone tape.

3. Screw the sensor into the thermowell. Install drain seals if required for severe

environments or to satisfy code requirements.

4. Pull the sensor wiring leads through the universal head and transmitter. Mount the

transmitter in the universal head by threading the transmitter mounting screws into the

universal head mounting holes.

5. Mount the transmitter-sensor assembly into the thermowell. Seal adapter threads with

silicone tape.

6. Install conduit for field wiring to the conduit entry of the universal head. Seal conduit

threads with silicone tape.

7. Pull the field wiring leads through the conduit into the universal head. Attach the sensor

and power leads to the transmitter. Avoid contact with other terminals.

8. Install and tighten the universal head cover. Enclosure covers must be fully engaged to

meet explosion-proof requirements.

A = Threaded Thermowell D = Universal Head

B = Threaded Style Sensor E = Conduit Entry

C = Standard Extension

00825-0100-4825.fm Page 6 Friday, February 18, 2011 11:49 AM