US 11,892,439 B2
System and method for gas reuse in testing of hazardous gas detecting instruments
Shane Lee McEwen, Morris Plains, NJ (US); Jacob Thomas Spector, Morris Plains, NJ (US); Andrew Nilsson, Morris Plains, NJ (US); and Chris Press, Morris Plains, NJ (US)
Assigned to HONEYWELL INTERNATIONAL INC., Charlotte, NC (US)
Appl. No. 16/961,045
Filed by HONEYWELL INTERNATIONAL INC., Morris Plains, NJ (US)
PCT Filed Feb. 2, 2018, PCT No. PCT/US2018/016656
§ 371(c)(1), (2) Date Jul. 9, 2020,
PCT Pub. No. WO2019/152047, PCT Pub. Date Aug. 8, 2019.
Prior Publication US 2020/0355659 A1, Nov. 12, 2020
Int. Cl. G01N 33/00 (2006.01)
CPC G01N 33/007 (2013.01) [G01N 33/0067 (2013.01); G01N 2033/0072 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A portable gas detector test fixture (102, 152), comprising:
a test chamber (104);
a processor (134);
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 conduct a bump test on a portable gas detector plugged into the docking connector (132) and to output a bump test result to the output device (138);
an inflow line (124) configured to connect to a test gas source line (120) of a test gas container (118, 154), where the inflow line (124) is coupled to the test chamber (104); and
an outflow line (130) configured to connect to a test gas return line (126) of the test gas container (118, 154) where the outflow line (130) is coupled to the test chamber, wherein the outflow line (130) is separated from the inflow line (124) (104), whereby test gas is returned to the test gas container and reused.