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Installation, Operation & Maintenance Manual
Digital Indication
Alarm Set Points
▲Rising alarm ▼Falling alarm LEL (Lower Explosive Limit) PPM (Parts per Million)
Gas Detector
Methane/Natural Gas (NG)
Liquid Petroleum Gas (LPG)
Hydrogen Gas (H)
Oxygen (O2)
Carbon Monoxide (CO)
An audible buzzer will sound if the buzzer switch on the circuit board is on!
IOM Iss: 4 11-21
Pre-Alarm
Buzzer
▲ 8% LEL
▲ 8% LEL
▲ 8% LEL
▼19.5%
No Sound
▲ 20 PPM
Alarm State
▲ 10% LEL
▲ 10% LEL
▲ 10% LEL
▼18.5% ▲ 23%
▲ 20ppm after two (2) hours
▲ 50ppm after One (1) hour
▲ 100ppm after Ten (10) minutes
▲ 300ppm after One (1) minute
Merlin Detector-TFT
Buzzer
Continuous
sound
10
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