US 12,241,878 B2
Gas detector test and calibration method and apparatus
Stella M. Oggianu, Farmington, CT (US); Jason R. Kondrk, Clay, NY (US); and Paul V. Weyna, Manilus, NY (US)
Assigned to CARRIER CORPORATION, Palm Beach Gardens, FL (US)
Appl. No. 15/734,224
Filed by Carrier Corporation, Palm Beach Gardens, FL (US)
PCT Filed May 13, 2020, PCT No. PCT/US2020/032634
§ 371(c)(1), (2) Date Dec. 1, 2020,
PCT Pub. No. WO2020/236480, PCT Pub. Date Nov. 26, 2020.
Claims priority of provisional application 62/993,916, filed on Mar. 24, 2020.
Claims priority of provisional application 62/849,324, filed on May 17, 2019.
Prior Publication US 2022/0065832 A1, Mar. 3, 2022
Int. Cl. G01N 33/00 (2006.01); B60H 1/00 (2006.01); F25D 29/00 (2006.01)
CPC G01N 33/0006 (2013.01) [B60H 1/00585 (2013.01); B60H 1/008 (2013.01); F25D 29/003 (2013.01); F25D 29/006 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A detector testing system for testing a gas detector used in a heating, ventilation, and air conditioning, or refrigeration (HVAC\R) system, the detector testing system comprising:
a testing chamber configured to receive the gas detector through an orifice in the detector testing system, the testing chamber being configured to at least partially enclose the gas detector within the testing chamber;
a receiving port fluidly connected to the testing chamber; and
a target gas cartridge fluidly connected to the receiving port, wherein the target gas cartridge contains a known concentration of a target gas,
wherein the target gas is a refrigerant;
wherein the known concentration of the target gas within the target gas cartridge is a lower flammability limit of the target gas or wherein the target gas within the target gas cartridge is diluted to a lower flammability limit of the target gas prior to the target gas entering the testing chamber;
wherein the receiving port is configured to deliver the target gas to the testing chamber;
wherein the orifice is configured to seal against a mounting surface of the HVAC/R system and enclose the gas detector, which is mounted to the mounting surface of the HVAC/R system, within the testing chamber isolating the gas detector within the testing chamber and preventing gas leakage between the testing chamber and an external environment outside of the testing chamber.