Detcon 972-04012-PLA - Manual (Page 2)

1.0 DESCRIPTION
The Detcon Model 972-04012-PLA is a 12VDC powered gas detection system that provides a remote gas
sample to two independent sensor assemblies. The sensor assemblies, discussed in the attached sensor
manual(s), are specified at time of order as to gas and range of detection. The NEMA 4X rating is by defini-
tion raintight and therefore is suitable for outdoor location in electrically non-hazardous environments.
The enclosure houses and flow fault detection circuit and a motherboard that provides lugless field
wiring terminals which include: 12 VDC power input, 4-20 mA signal output and alarm relay dry contacts.
Internal panel mount fuses are provided for VDC power.
A power switch, power indicator lamp and a flow fault indicator lamp are mounted on the hinged gas-
keted door. Externally mounted flow controls include a selector valve for sample and calibration and a flow
meter with adjustable valve. An externally mounted moisure filter is provided for the gas sample input.
1.1 INSTALLATION
1. Securely mount the enclosure in accordance with the drawing below. Mounting holes are 5/16" diameter.
Detcon Model 972-04012-PLA Gas Detection System PG.2
10.5"
11.5"
19.5"
19.5"
20.5"
22"
0
100
200
300
400
500
Mounting Holes
.312" Dia.
1/4" Stainless
Steel Tubing
Max Distance 150 ft.
CAL PORT
SET
FLOW
SAMPLE
PORT
detcon inc.
HOUSTON, TEXAS
SAMPLE DRAW
GAS DETECTION SYSTEM