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HVAC pressure switch PS-LA8

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product category: Air,Gas Pressure Switch
Model: PS-LA8
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HVAC pressure switch PS-LA8

HVAC pressure switch PS-LA8 are general purpose airflow proving switches designed for HVAC, detection of blocked filters and fan suction, air flow monitoring in ducts, pipes, tunnels, and other energy management applications. It may be used to sense positive, negative or differential air pressure.

The plated housing contain a diaphragm, a calibration spring and a snap-acting switch. The sample connections located on each side of the diaphragm accept a 0.25" OD tubing via the integral compression and nut. An enclosure cover guards against accidental contact with the live switch terminal screws and the set point adjusting screw. The enclosure cover will accept a 0.5" conduit connection. Also, it has a reset button located on the top surface of the enclosure cover.

Model	AFS-222(PS-LA8-1)	AFS-262(PS-LA8-2)	AFS-460(PS-LA8-3)
Medium	Air	Air	Air
Mounting Position	Diaphragm in any vertical plane	Diaphragm in any vertical plane	Diaphragm in any vertical plane
Field Adjustable Range	0.05±0.02" W.C. to 12.0" W.C.	0.05±0.02" W.C. to 2.0" W.C.	0.40±0.06" W.C. to 12.0" W.C.
Switch Differential	Progressive, increasing from approximately 0.02" W.C at minimum set point, to approximately 0.8" W.C. at maximum set point.	Progressive, increasing from approximately 0.02" W.C at minimum set point, to approximately 0.1" W.C. at maximum set point.	None, Mannual Reset
Maximum Pressure	0.5psi (0.03bar)	0.5psi (0.03bar)	0.5psi (0.03bar)
Operating Temperature Range	-40℃-82℃	-40℃-82℃	-40℃-82℃
Electrical Rating	300 VA pilot duty at 115-277VAC, 10amp, non-inductive, 277VAC, 60Hz.	300 VA pilot duty at 115-277VAC, 10amp, non-inductive, 277VAC, 60Hz.	300 VA pilot duty at 115-277VAC, 10amp, non-inductive, 277VAC, 60Hz.
Electrical Connections	Screw top terminals with cup washers	Screw top terminals with cup washers	Screw top terminals with cup washers
Pressure Connections	Ferrule and nut compression type connectors that accept 0.25" OD rigid tubing.	Ferrule and nut compression type connectors that accept 0.25" OD rigid tubing.	Ferrule and nut compression type connectors that accept 0.25" OD rigid tubing.
Contact type	SPDT	SPDT	2 SPST-NC (manual reset)

Conversion: 1mbar=100Pa 1"W.C.=249Pa

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HVAC pressure switch PS-LA8

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