Automation Components, Inc.
PRESSURE | DIFFERENTIAL PRESSURE SWITCHES | AFS
AFS
Differential Pressure Switches (Metal)
The AFS Series Differential Pressure Switches are general purpose proving switches designed
for both HVAC and Energy Management applications. These pressure switches can be used to
sense positive, negative, or differential air pressures when used in conjunction with an A/SPT or
A/VPT Series sampling tube. The plated housing contains a diaphragm, calibration spring and
single snap-acting contact closure with either a manual or automatic reset switch depending on
the model. The enclosure cover contains a ½” conduit knockout and guards against accidental
contact with the live switch terminal screws as well as the set point adjusting screw.
Applications: Monitoring Filter Blockage, Proof of Flow, Prove Excessive or Insufficient Flow,
Alarms and Control
The AFS Series is covered by ACI’s Two (2) Year Limited Warranty. The warranty can be found in the front of ACI’s Sensors & Transmitters
catalog, as well as on ACI’s website, workaci.com.
PRODUCT SPECIFICATIONS
Input Pressure Range: AFS-222: 0.05 +/- 0.02” to 12” wc | AFS-262: 0.05 +/- 0.02” to 2.0” wc | AFS-460: 0.40 +/- 0.06” to 12.0“ wc
Set Point Range: AFS-222: 0.05 +/- 0.02” to 12.0” wc | AFS-262: 0.07” to 2.0” wc | AFS-460: 0.40 +/- 0.06” to 12“ wc
Field Adjustable “Operate” Range: AFS-222: 0.07 to 12.0” wc | AFS-262: 0.07” to 2” wc | AFS-460: 0.46” to 12“ wc
Field Adjustable “Release” Range: AFS-222: 0.04 to 11.2” wc | AFS-262: 0.04” to 1.9” wc | AFS-460: 0.46”w.c. to 11.2” w.c.
Approximate Switching Differential: Progressive, increasing from 0.02 +/- 0.01” wc @ minimum set point to 0.8” wc @ maximum set point
AFS-222/AFS262: 300 VA pilot duty @ 115 to 277 VAC, 60 Hz; 15A non-inductive to 277 VAC, 60 Hz
Contact (Load) Rating: AFS-460: 15A @ 125, 250, or 277 VAC / 1/2A @ 125 VDC, 1/4A @ 250 VDC / ¼ hp @ 125 VAC, ½ hp @ 250 VDC
AFS-460-137: 8A @ 250 VAC
AFS-222/AFS-262: SPDT w/ Automatic Reset | AFS-460: SPST-NC w/ Manual Reset | AFS-460-137: DPDP
Contact Arragement:
w/ Manual Reset
Measured Media: AFS-222/AFS-262: Air or combustion by-products that will not degrade silicone | AFS-460: Air
Maximum Pressure: 0.5 PSI (0.03 Bar)
AFS-222/AFS-262: 100,000 cycles minimum @ 1/2 psi (0.03 Bar) max pressure / cycle & max load
Life Expectancy:
AFS-460: 6,000 cycles minimum @ 1/2 psi (0.03 Bar) max pressure / cycle & max load
Operating Temperature Range: -40 to 180ºF (-40 to 82ºC)
Operating Humidity Range: 10 to 95% RH, non-condensing
Mounting Direction: Any vertical plane
Enclosure Material: Galvanized Steel
Accepts ¼” OD rigid or semi-rigid metallic tubing using integral compression fitting, ferrule and nut |
Sample Line Connections:
“-112 Option”: Includes two barbed fittings that accepts ¼” flexible plastic tubing
Electrical Connections: Screw type terminal with cup washers
Conduit Opening: Accepts ½” Conduit (7/8” (22.3 mm) opening)
Dimensions (H x W x D): 6.25” x 4.46” x 3.18” (158.8 mm x 113.3 mm x 80.8 mm)
Weight: 1.2 lbs (0.544 kg)
Agency Approvals: UL, CUL, FM, CSA, CE, ISO 9001: 2008
Call: 1-888-967-5224 | Web: www.workaci.com PRESSURE | ##
Automation Components, Inc.
PRESSURE | DIFFERENTIAL PRESSURE SWITCHES | AFS
DIMENSIONAL DRAWING
AFS [222] High Pressure Inlet
2x Ø.19”
1.63” (4.83mm)
(41.28mm) 1.38”(35.05mm)
Low Pressure Inlet
3.25” 3.88” 0.71”(18.03mm)
(82.55mm) (98.55mm) 3.25”
(82.55mm)
2.81” 1.94” .44” (11.18mm)
(71.37mm) (49.28mm) 0.78”(19.69mm)
6.13” (155.70mm)
AFS [262] High Pressure Inlet
1.63” 2x Ø.19” (4.83mm)
(41.28mm) 1.38”(35.05mm) Low Pressure Inlet
3.25” 3.88” 0.71”(18.03mm
(82.55mm) (98.55mm)
3.25” )
(82.55mm)
2.81” 1.94” 0.78” (19.69mm)
(71.37mm) (49.28mm) .44”(11.18mm)
6.13” (155.70mm)
AFS [460] High Pressure Inlet
1.63” 2x Ø.19” (4.83mm) 1.38”(35.05mm)
(41.28mm)
Low Pressure Inlet
3.25” 3.88” 3.56” 0.71” (18.03mm)
(82.55mm) (98.55mm)
(90.42mm)
Reset Button
2.81” 1.94” .44” (11.18mm) 0.91” (23.11mm)
(71.37mm) (49.28mm)
6.13” (155.70mm)
Front View Side View Top View
STANDARD ORDERING Model # Example: AFS-222 -OR- 101788
Model # Item # Pressure Range Contact Style Reset Style Compression Fitting Barbed Fitting
AFS-222 101788 0.05 to 12.0” wc SPDT Auto ・
AFS-222-112 108816 0.05 to 12.0” wc SPDT Auto ・
AFS-262 101789 0.05 to 2.0” wc SPDT Auto ・
AFS-262-112 118041 0.05 to 2.0” wc SPDT Auto ・
AFS-460 101791 0.40 to 12.0” wc SPST-N/C Manual ・
AFS-460-112 129657 0.40 to 12.0” wc SPST-N/C Manual ・
AFS-460-137 105782 0.60 to 12.0” wc DPDT Manual ・
PRESSURE | ## Call: 1-888-967-5224 | Web: www.workaci.com
