Installation, Mounting the gd-70d4s-xx, Figure 3: factory wiring – RKI Instruments GD-70D4S-XX User Manual
Page 7

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
BLK
GRN
N L
(AC)
+V -V
BL
K
WH
T
GR
N
10
8
9
4-20mA
ALM2
FAULT
GD-70D
Backplate
Power Supply
Terminal
AC in Terminal
1
2
3
4
5
6
7
+
+
-
-
ALM1
DC24V