Manual

Model GD-70D4S-XX Sample Draw Transmitter • 4

Figure 3: Factory Wiring

Installation

This section describes how to install the GD-70D4S-XX at the monitoring site.

Mounting the GD-70D4S-XX

1. Select a mounting site that is representative of the monitoring environment. Consider

the following when you select the mounting site.

• Select a site that is easily accessible for servicing.

• Select a site where the GD-70D4S-XX is not likely to be bumped or disturbed.

Make sure there is sufficient room to make wiring and sample line connections at

the bottom of the GD-70D4S-XX. Also make sure there is sufficient room to

perform start-up, maintenance, and calibration procedures.

• Select a site near the sampling area. The GD-70D4S-XX is designed to detect a

variety of toxic gases many of which are easily absorbed in sample tubing. Keep

the sample line length to a minimum. Teflon PTFE tubing is recommended.

• Use four 1/4” screws through the mounting feet to mount the GD-70D4S-XX to a

vertical surface. See Figure 4 for the mounting dimensions.

BLK

RED

Strobe

BLK

GRN

N L

(AC)

+V -V

BLK

WHT

GRN

4-20mA

ALM2 FAULT

GD-70D

Backplate

Power Supply

Terminal

AC in Terminal

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ALM1DC24V