air sensing switch

The LFAS employs a differential pressure to actuate a precision snap switch at chosen pressure setting. This may be the difference between atmospheric and a negative or positive pressure or between any two given pressures. When a change of pressure occurs between the negative pressure chamber and the positive pressure chamber the main diaphragm activates the snap switch at a pre-determined value.
Typical Applications:
Detects air flow in forced draught appliances
Signals either positive, negative or zero air movement
down burner in blocked flue conditions
Guards against poor or hazardous combustion
Indicates dirty or inefficient filters

Place of Origin:	Zhejiang Yueqing in China
Model No:	LFAS
Brand Name:	LEFOO