The alarm is factory assembled of a rugged aluminum base and PVC enclosure and utilizes a pressure switch with a rating of 3000 psi. There is a Green blinking “OK” light when gas supply is adequate and a Red blinking “LOW” light when gas supply is low. In addition, an audible alarm activates when purge gas is low. The alarm operates on a 9-volt battery, included, which can give up to a year of operation, dependent upon usage.
The A332-N2 alarm does not include a flowmeter regulator.
This alarm is for high-pressure cylinders. An alarm for liquid dewars is available as A333-CRYO for $515.00.