Installation, Mounting the gd-70d4a-xx – RKI Instruments GD-70D4A-XX User Manual
Page 7
Model GD-70D4A-XX Sample Draw Transmitter • 4
Figure 3: Factory Wiring
Installation
This section describes how to install the GD-70D4A-XX at the monitoring site.
Mounting the GD-70D4A-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-70D4A-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-70D4A-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-70D4A-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-70D4A-XX to a vertical
surface. See Figure 4 for the mounting dimensions.
FAULT
10
9
8
7
-
-
+
+
4-20mA
DC24V
+V
(AC)
-V
L
N
BLK
Power Supply
Terminal
6
5
4
3
2
1
GRN
AC in Terminal
GD-70D
Backplate
ALM 1 ALM 2
BL
K
GR
N
WH
T
RED