Emerson Rosemount 248 Reference Manual page 21

Reference Manual
00809-0100-4825
Example
Figure 2-9: Rosemount 248 wiring
Power, communication, and sensor
terminals
Note
Signal loop may be grounded at any single point or left ungrounded.
Note
A Field Communicator may be connected at any termination point in the signal loop. The
signal loop must have between 250 and 1100 ohms load for communications.
2.9.1 Sensor connections
The Rosemount 248 is compatible with a number of RTD and thermocouple sensor types.
Figure 2-10
transmitter. To ensure proper sensor connection, anchor the sensor lead wires to the
appropriate compression terminals and tighten the screws. Use extreme caution when
making contact with the leads and terminals.
Rosemount 248 Temperature Transmitter Reference Manual
shows the correct input connections to the sensor terminals on the
Connecting a communicator to a transmitter loop
A. Field communicator
B. Power supply
C. 250 V ≤ R ≤ 1100 V
L
D. Recorder (optional)
E. Ammeter (optional)
Installation
May 2019
21