Emerson Rosemount 248 Quick Start Manual page 8

Quick Start Guide
Figure 3-1: Typical European and Asia Pacific Installation
3.3 Typical North and South American installation
Head mount transmitter with threaded sensor
Procedure
1. Attach the thermowell to the pipe or process container wall. Install
and tighten the thermowell before applying process pressure.
2. Attach necessary extension nipples and adapters to the thermowell.
3. 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. Pull the sensor wiring leads through the universal head and
transmitter.
6. Mount the transmitter in the universal head by threading the
transmitter mounting screws into the universal head mounting
holes.
7. Mount the transmitter-sensor assembly into the thermowell. Seal
adapter threads with silicone tape.
8. Install conduit for field wiring to the conduit entry of the universal
head. Seal conduit threads with silicone tape.
9. Pull the field wiring leads through the conduit into the universal
head.
10. Attach the sensor and power leads to the transmitter. Avoid contact
with other terminals.
11. Install and tighten the universal head cover.
8
A. Transmitter mounting screws
B. Rosemount 248 Transmitter
C. Integral mount sensor with flying leads
D. Connection head
E. Extension
F. Thermowell
February 2021