Patent ID: 11920806
Assignee: JOHNSON CONTROLS TYCO IP HOLDINGS LLP
Field: Measurement (Instruments)
Classification: CPC F  G | IPC F  G

Claim 7:
8. A method of operating a sensor to detect a refrigerant in a monitored gas volume of a heating, ventilation, and air conditioning (HVAC) system, the method comprising:
collecting a sample from the monitored gas volume of the HVAC system;
measuring a concentration of an ultraviolet (UV) tracer in the sample;
determining a concentration of leaked refrigerant in the monitored gas volume based on the concentration of the UV tracer measured to be in the sample;
defining a correcting action output based on the concentration of the leaked refrigerant determined to be in the monitored gas volume exceeding a threshold; and
outputting the corrective action output to modify operation of the HVAC system.