SYSTEM AND METHOD FOR GAS REUSE IN TESTING OF HAZARDOUS GAS DETECTING INSTRUMENTS

Embodiments include a portable gas detector test fixture, comprising: a test chamber (104); a processor (134); a test gas container (154) storing a test gas; a docking connector (132) communicatively coupled to the processor (134); an output device (138) communicatively coupled to the processor (134); a memory (136) communicatively coupled to the processor (134); an application (137) stored in the memory (136) that, when executed by the processor (134), is configured to determine an aging of the test gas stored in the test gas container (154) and to provide a notification to a user via the output device (138) indicating when the test gas container (154) should be replaced; and an inflow pump (110) configured to connect to a test gas source line (120) of a test gas container (118, 154), where the inflow pump (110) is coupled to the test chamber (104); the portable gas detector test fixture (102, 152) further comprising: an outflow pump (114) configured to connect to a test gas return line (126) of the test gas container (118, 154), where the outflow pump (114) is coupled to the test chamber (104) whereby test gas is returned to the test gas container and reused.