Scentry III-GFRAB a utomatic propane and natural gas shut off system: gas sensor at unit responds to explosive gasses Propane (LP) <5200 PPM or Natural Gas / Methane <12,200 PPM. Home gas detector designed to sense the presence of
explosive gases. Once an explosive gas is detected, a 90db alarm sounds, the gas valve shuts and, if installed, equipment is activated to remove gas from the building. Easily accessible terminal strips for
fast and secure wire connections, backup battery charging, low battery
detect and sensor failure alarm. Option: add remote sensors near gas using appliances. Made in USA. Additional options:battery back-up, remote gas sensors and remote alarms. Note: gas valve is not included: requires .5 inch, .75 inch or 1 inch diaphragm type valve with compression spring closing and soft seat construction. Battery option keeps pilot lights lit during intermittent power failures.12V output offers a phone dialer option (no dialer included) to alert owners of vacation homes, etc. when unsafe condition occurs. Supports up to 5 remote sensors (purchase separately).
GFRAB stands for Gas sensor, Feet for mounting, Remote sensor capability, Alarm (internal, 90 db) and Battery back-up compatible.
Safety First USA Gas Valve Controller (GFRAB) Operation:
Loud alarm at a 10% (LEL) lower explosive level. Methane (natural gas) alarm point varies but is near 10% level.
Two minutes of electrical power required for monitor operation.
Green LED: power is on, no leak
Red LED: alarm goes to a BEEP- BEEP mode, gas valve controller closes the gas valve to stop gas flow to protected appliances.
To reset the unit, ventilate area to remove un-burned fuel and push red reset button.
Once an explosive gas is detected, this gas monitor sounds alarm and can activate equipment to remove dangerous gas build up in a building. Ex. can activate a ventilation fan. Gas alarm and gas monitor have easily accessible terminal strips for fast and secure wire connections, backup battery charging, low battery detection and sensor failure alarm.
The GFRAB model includes the gas sensor, mounting feet, remote ready, alarm and battery and gas valve shut-off/controller. NOTE: Must be used with a Scentry III gas valve (sold separately) or a compatible gas valve. Use with .5 inch, .75 inch or 1 inch compatible valves. Optional battery keeps a pilot light lit in case of power outage.
Each Scentry gas sensor is calibrated in a gaseous atmosphere: calibration sets the alarm to sound at 10% of the lower explosive level (LEL) of the combustible gas. This is not a carbon monoxide alarm as it has only a combustible gas alarm sensor.
Note: Sensor reacts to concentrations of fumes from Alcohol, Butane, Gasoline, Hydrogen (from Charging battery’s), Kerosene, LP Gas, Propane, and Natural Gas (Methane).
Scentry III-GFRAB Automatic Gas Valve Shut Off Specifications:
Power consumption: 1.5va, Input power is 115VAC, 60 Hz, output control relays are 2 amps, 24VAC, screw terminals
3 Components Included with Scentry III GRAB : Gas Valve Controller for combustible gasses such as natural gas or propane gas, internal 24 volt transformer ., Gas Sensor: Tin Dioxide Semiconductor Type . Note: Must purchase gas safety valve, .5, .75 or 1 inch Scentry III GVD.
Components Not Included But Supported by Scentry III GRAB: up to 4 additional Scentry III calibrated remote propane/natural gas sensors. and a Scentry III battery back-up.
Alarm Signal Output: 12V DC @500 m , Alarm Points: Propane (LP) <5200 PPM or Natural Gas / Methane <12,200 PPM ,
Manufactured in USA for Safety First USA, Inc.
Warranty: 1 year from date of purchase by manufacturer.