China HVAC Pressure Switch Air Differential Pressure Switch

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Introduction:
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.
Technical Data:
Conversion: 1mbar=100PA 1"W. C. =249PA

ModelAFS-222( PS-LA8-1 )AFS-262( PS-LA8-2 )AFS-460( PS-LA8-3 )MediumAir AirAirMounting PositionDiaphragm in any vertical planeDiaphragm in any vertical planeDiaphragm in any vertical planeField Adjustable Range0.05±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 DifferentialProgressive, 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 ResetMaximum Pressure0.5psi (0.03bar)0.5psi (0.03bar)0.5psi (0.03bar)Operating Temperature Range-40ºC-82ºC-40ºC-82ºC-40ºC-82ºCElectrical Rating300 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 ConnectionsScrew top terminals with cup washersScrew top terminals with cup washersScrew top terminals with cup washersPressure ConnectionsFerrule 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 typeSPDTSPDT2 SPST-NC (manual reset)