Patent ID: 11965663
Assignee: COPELAND LP
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 19:
20. A method of sensing refrigerant leaks, comprising:
by a first refrigerant sensor element, when powered:
measuring a first amount of the refrigerant present in air; and
generating a first output based on the first amount;

by a second refrigerant sensor element, when powered:
measuring a second amount of the refrigerant present in air; and
generating a second output based on the second amount;

during a first period, applying power the first refrigerant sensor element and not applying power to the second refrigerant sensor element;
during a second period after the first period, applying power to the second refrigerant sensor element and not applying power to the first refrigerant sensor element;
during the first period, connecting the first output of the first refrigerant sensor element to a third output and not connecting the second output of the second refrigerant sensor element to the third output; and
during the second period, connecting the second output of the second refrigerant sensor element to the third output and not connecting the first output of the first refrigerant sensor element to the third output.