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Cleveland afs-298 pressure sensing switch adj set point
NEW AIR PRESSURE SENSING SWITCH
The Model AFS-298 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.
General Description & Operation
The plated housing contains a diaphragm, a calibration spring, and a snap-acting SPDT switch. The barbed sample line connections located on each side of the diaphragm accept flexible tubing. The electrical connection consists of male ¼-inch quick connect terminals.
Mounting Position:Mount with the diaphragm in any vertical plane.
Set Point Range: 0.05 ±0.02"w.c. to 12.0" w.c.
Field Adjustable "Operate Range": 0.07"w.c. to 12.0"w.c
Field Adjustable "Release Range":0.04"w.c. to 11.2"w.c.
Approximate Switch Differential: Progressive, increasing from 0.02±0.01"w. c. at minimum set point to approximately 0.8"w.c. at maximum set point.
Measured Media: Air or combustion byproducts that will not degrade silicone.
Maximum Pressure: ½ psi (0.03 bar)
Operating Temperature Range: –40 to 180F(–40.0 to 82.2C)
Life: 100,000 cycles minimum at ½ psi maximum pressure each cycle and at maximum rated electrical load.
Electrical Rating: 300 VA pilot duty at 115 to 277 VAC; 15 amp noninductive to277 VAC, 60 Hz.
Electrical Connections: Male, ¼", 90° quick-connect terminals
Sample Line Connectors: Two barbed ¼" slip-on connectors, suitable for flexible tubing
