Cleveland afs-271 pressure sensing switch adj set point

What is for sale: Cleveland afs-271 pressure sensing switch adj set point

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The Model AFS-271 is a general purpose proving switch designed for HVAC and Energy Management applications. It may be used to sense positive, negative, or differential air pressure.
The plated housing contains a diaphragm, a calibration spring and a snap-acting SPDT switch.The sample connections located on each side of the diaphragm accept ¼" OD metallic tubing via the integral compression ferrule and nut.
Mount with the diaphragm in any vertical plane.
Approximate Switching Differential:
Progressive, increasing from 0.02± 0.01 "w.c. at minimum set point to approximately 0.1" w.c. at maximum set point.
Air, or combustion by-products that will not degrade silicon.
100,000 cycles minimum at 1/2 psi maximum pressure each cycle and at maximum rated electrical load.
300 VA pilot duty at 115 to 277 VAC, 15 amps noninductive to 277 VAC, 60 Hz.
Male, externally threaded 7/16" 24 UNS 2A thread, complete with nuts and selfaligning ferrules.
Connectors will accept ¼" OD rigid or semi-rigid tubing.
To properly calibrate a Air Switch, a digital manometer or other measuring device should be used to confirm the actual set point.