Installation & Operation Manual Merlin Gas Detector
Rev: 18 03-20
6
Trouble Shooting
Fault.
Possible Cause/Correction.
Detector not responding.
o
Incorrect wiring.
o
Exceeded zone detector capacity.
o
Sensor exceeded expected life span.
LED flashing and alarm beep.
o
Sensor fault. Contact your supplier
Specification
Product:
Gas Detector
Model: CO / NG / LPG / H2
Visual Indicators
Power (Green),
Low gas concentration (Amber)
High gas concentration (Red)
Initial Stabilisation Time
60 Seconds approx.
Power Input Voltage
12-24V / 7-30VDC
Relay Output
0.5A Switching Current (resistive load).
Consumption
90mA Max (24V)
Accuracy @ 25°C / 77°F
± <10%
Fuses
N/A
Operating Temp
0 – 50°C 30-85%RH Non-Condensing
Test Conditions
25° ±5°C / 77° ±41°F
Audible Alarm Buzzer (dB)
65 dB (300mm distance in quiet conditions)
Gas Sensor Type
NG: Semi-conductor
Measuring Range
NG: 300-10,000 PPM
LPG: Semi-conductor
LPG: 300-10,000 PPM
H: Semi-conductor
H: 100-10,000 PPM
CO: Electro-Chemical
CO: 10-10,000 PPM
Gas Level Pre- Alarm
NG: 8% LEL
Gas Level Alarm
NG: 10% LEL
LPG: 8% LEL
LPG: 10% LEL
H: 8% LEL
H: 10% LEL
CO: 20 PPM
CO: 30 PPM @ 2 HOURS
O2: 18.5 – 19.5%
50 PPM @ 1 HOUR
100 PPM @ 10 MINS
Expected Sensor Life
NG: 10 Years
300 PPM @ 1 MINS
LPG: 10 Years
H: 10 Years
CO: 5 Years
Dimensions
(H x W x D)
95.3 x 133 x 38mm / 3.75 x 5.23 x 1.5”
