NFPA-99, 2002 and 2005 editions requires that the Medical Gas Installer be notified
when the contents of the Nitrogen Purge is running low.
We have searched the industry and have found a replacement high pressure gauge that
does just that. All you do is remove the high pressure gauge from your existing purging
rig and replace it with the LO-N2 Alert Alarm Gauge.
The battery is only being used when the unit is in alarm or while the test button is
depressed. The unit has both a visual and audible alarm when the Nitrogen pressure
falls below 500 psi +/- 150 psi.
