Emerson Rosemount 248 Reference Manual page 18

Installation
May 2019
• a threaded sensor connection head
• a union and nipple extension assembly
• a threaded thermowell
Refer to the appropriate Product Data Sheet regarding Emerson temperature elements for
complete sensor and mounting accessory information.
To complete the assembly:
Procedure
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
3. Attach necessary extension nipples and adapters. Seal the nipple and adapter
4. Twist the sensor into the thermowell. Install drain seals if required for severe
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
9. Attach the sensor and power leads to the transmitter. Avoid contact with leads and
Example
Figure 2-7: Typical Rail Mount Transmitter Mounting Configuration using Threaded
Style Sensor and Assembly
A. Rail mount transmitter
B. Threaded sensor connection head
C. Threaded style sensor
D. Standard extension
E. Threaded thermowell
18
thermowell before applying pressure.
threads with silicone tape.
environments or to satisfy code requirements.
engaged to meet explosion-proof requirements.
terminals.
Rosemount 248 Temperature Transmitter Reference Manual
Reference Manual
00809-0100-4825