Detcon 971-071170-00L - Manual (Page 3)

2. Install a length of tubing from the desired sample point to the sample port as shown below. Sample draw tub-
ing should be either teflon or stainless steel 1/4" OD. Sample flow rates are set between 500 and 1000 ml/m.
CAUTION:
When detecting for NH3, CL2, CLO2, or HCL care must be taken to use a minimum amount of stainless steel tub-
ing and connections because stainless steel readily absorbs these gasses and will cause significant error in the detection process.
Teflon tubing is recommended for these applications.
3. Install a length of tubing from the vent port and an area deemed safe for vent as shown below.
Caution: Observe correct polarity when terminating all input/output wiring. Failure to do so may result in
circuit damage on power up. See the field wiring diagram below for terminal locations.
4. Connect 117VAC to the connector labeled “117VAC IN”.
5. If applicable, connect 24 VDC battery backup to the connector labeled “24 VDC IN”.
6. If applicable, connect a remote recording device or computer to the 4-20 mA signal output connector.
The terminals are labeled SENSOR “–” and “mA”.
Detcon Model 971-071170-00L Gas Detection System PG.3
Sample
Port
0
100
200
300
400
500
CAL PORT
SET
FLOW
SAMPLE
PORT
detcon inc.
HOUSTON, TEXAS
SAMPLE DRAW
GAS DETECTION SYSTEM
Vent Port