Connect The Wiring - Emerson Rosemount 148 Quick Start Manual

Temperature transmitter

Hide thumbs Also See for Rosemount 148:

Quick Start Guide

Connect the wiring

4.1

Diagrams and power

•

Wiring diagrams are located on the top label of the transmitter.

•

An external power supply is required to operate the transmitter.

•

The power required across the transmitter power terminals is 12 to 42.4

Vdc (the power terminals are rated to 42.4 Vdc).

Note

To prevent damaging the transmitter, do not allow terminal voltage to drop

below 12.0 Vdc when changing the configuration parameters.

4.2

Power the transmitter

Procedure

1. Connect the positive power lead to the "+" terminal.

2. Connect the negative power lead to the "–" terminal.

3. Tighten the terminal screws.

4. Apply power (12–42 Vdc).

Example

Figure 4-1: Power, Communication, and Sensor Terminals

A. Sensor terminals

B. Power/communication terminals

4.3

Ground the transmitter

Ungrounded thermocouple,mV, and RTD /Ohm inputs

Each process installation has different requirements for grounding. Use the

grounding options recommended by the facility for the specific sensor type,

or begin with grounding Option 1 (the most common).

April 2019

Rosemount 148