LPG/Gas Vapor Monitor with Alarm
With Solenoid Contoller & Remote Sensor
The GD20B Gas Vapor Monitor detects gas vapors at 10%, 20% or 30% of the concentration required for an explosion (LEL or Lower Explosive Limit). The desired sensitivity can be selected from the front panel and stored in the non-volatile memory. When activated, the built-in 85dB alarm will sound and it will remove power to your LPG solenoid. The alarm will continue to sound as long as the sensor detects a dangerous concentration of gas vapor or until the "wait button" is pressed. If the alarm is silenced by the use of this button, the GD20B will automatically arm the alarm again as soon as the gas vapor has subsided.
The GD20B uses new technology to lower the power requirements for the sensor and it can be programmed to put itself to sleep for further power conservation. It can also be programmed to be active continuously or wake-up every 5 minutes for a sniff.
A built-in self test program checks the electronics and calibrates the gas sensor(s) automatically in less than one minute and reports any problems.
In addition to the built-in 85dB alarm, the GD20B provides an alarm output that can be connected to the optional LA-20 External Loud Alarm to provide an amazing 105dB of volume. This amount of noise can be heard for 1/4 mile or more.
The GD-20B operates from any voltage between
10.5 VDC and 30.0 VDC. The unit comes pre-wired to one combination LPG/ gasoline/petrol sensor with 3 meters (10-feet) of cable. A second LPG/gasoline/petrol sensor can be connected. Installation requires only a screwdriver.
An instruction manual and all mounting hardware is also provided.
Spare gas sensor assembled with 16-ft cable (5 meters) can be ordered separately - Mfg# GD27LPG.