• 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 6.3mm(0.25") OD tubing via
       the integral compression ferrule 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 12.7 mm (0.5") conduit connection.







  • Optional pressure ranges and
       manual resets available.



  • MODEL AFS-222 AFS-262 AFS-460
    Sample Media Air Air Air
    Mounting Position Diaphragm in any vertical plane Diaphragm in any vertical plane Diaphragm in any vertical plane
    Field Adjustable Range 0.050 0.02" w.c.
    to 12" w.c.
    0.050 0.02" w.c.
    to 2" w.c.
    0.400 0.06" w.c.
    to 12" w.c.
    Switch Differential Progressive, increasing from approx. 0.020 0.01" w.c. at min. set point, to approx. 0.8" w.c. at max. set point Progressive, increasing from approx. 0.020 0.01" w.c. at min. set point, to approx. 0.1" w.c. at max. set point Progressive, increasing from approx. 0.060 0.01" w.c. at min. set point, to approx. 0.8" w.c. at max. set point
    Maximum Pressure 0.5psi (0.03 bar) 0.5psi (0.03 bar) 0.5psi (0.03 bar)
    Operating Temperature Range -40C - 82C
    (-40F - 180F)
    -40C - 82C
    (-40F - 180F)
    -40C - 82C
    (-40F - 180F)
    Life 100,000 cycles at 0.5psi max pressure each cycle and at max electrical load 100,000 cycles at 0.5psi max pressure each cycle and at max electrical load 100,000 cycles at 0.5psi max pressure each cycle and at max electrical load
    Electrical Rating 300 va pilot duty at
    115 - 277 VAC, 10 amp, non-inductive, 277 VAC, 60Hz
    300 va pilot duty at
    115 - 277 VAC, 10 amp, non-inductive, 277 VAC, 60Hz
    300 va pilot duty at
    115 - 277 VAC, 10 amp, non-inductive, 277 VAC, 60Hz
    Contact Arrangement SPDT SPDT SPNC
    Electrical Connections Screw top terminals with cup washers Screw top terminals with cup washers Screw top terminals with cup washers
    Sample Line Connections Ferrule and nut compression type connectors that accept 6.35mm (0.25") OD rigid tubing Ferrule and nut compression type connectors that accept 6.35mm (0.25") OD rigid tubing Ferrule and nut compression type connectorsr that accept 6.35mm (0.25") OD rigid tubing
    Automatic/Manual Reset Automatic Automatic Manual
    Approvals UL and CSA UL and CSA UL and CSA