Wiring A Transmitter; Overview; Figure 12 - Flange Adapter Removal And Replacement; Figure 13 - Transmitter Operating Ranges - Honeywell ST 700 User Manual

Refer to the instructions included with the kit for removal and replacement procedures.

3.6 Wiring a Transmitter

3.6.1 Overview

The transmitter is designed to operate in a two-wire power/current loop with loop resistance and
power supply voltage within the operating range shown in Figure 13.
Loop
Resistance
(ohms)
Loop wiring is connected to the Transmitter by simply attaching the positive (+) and negative (–) loop
wires to the positive (+) and negative (–) terminals on the Transmitter terminal block in the
Electronics Housing shown in Figure 14.
Page 72
Figure 12 – Flange Adapter Removal and Replacement
1440
1200
800
650
450
250
0 10.8 16.28 20.63 25 28.3
Operating Voltage (Vdc)
Figure 13 – Transmitter Operating Ranges
ST 700 SmartLine Pressure Transmitters User's Manual
= Operating
Area
NOTE: A minimum of
250 0hms of loop
resistance is
necessary to support
communications. Loop
resistance equals
barrier resistance plus
wire resistance plus
receiver resistance.
Also 45 volt operation
is permitted if not an
intrinsically safe
installation.
37.0 42.4
21012
Revision 1.0