Differential Pressure Switch, 0.05 to 2.0 in. WC, SPDT, Auto Reset, Compression Fitting

APPLICATIONS

The AFS-262 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. The AFS-262 has a field adjustable operating range of 0.07" to 2.0" W.C.. It also has a setpoint range of 0.05" +/- 0.02" to 2" W.C. with a field adjustable "release range" of 0.04" to 1.9" W.C.. The AFS-262 will accept a 0.25" O.D. rigid metallic tubing via the integral compression ferrule and nut. The enclosure cover guards against accidental contact with the live switch terminal screws and the setpoint adjusting screw. It also contains a 1/2" conduit knockout in the cover of the enclosure.

FEATURES & BENEFITS

• Input Pressure Range: 0.05 +/- 0.02” to 2.0” wc
• Set Point Range: 0.07” to 2.0” wc
• Field Adjustable “Operate” Range: 0.07” to 2” wc
• Field Adjustable “Release” Range: 0.04” to 1.9” wc
• Approximate Switching Differential: Progressive, increasing from 0.02 +/- 0.01” wc @ minimum set point to 0.8” wc @ maximum set point.
• Contact (Load) Rating: 300 VA pilot duty @ 115 to 277 VAC, 60 Hz; 15A non-inductive to 277 VAC, 60 Hz
• Contact Arrangement: SPDT w/ Automatic Reset | AFS-460: SPST-NC w/ Manual Reset
• Measured Media: Air or combustion by-products that will not degrade silicone
• Maximum Pressure: 0.5 PSI (0.03 Bar)
• Life Expectancy: 100,000 cycles minimum @ 1/2 psi (0.03 Bar) max pressure / cycle & max load
• Operating Temperature Range: -40 to 180”F (-40 to 82”C)
• Operating Humidity Range: 10 to 95% RH, non-condensing
• Mounting Direction: Any vertical plane
• Enclosure Material: Galvanized Steel
• Sample Line Connections: Accepts ¼” OD rigid or semi-rigid metallic tubing using integral compression fitting, ferrule and nut
• Electrical Connections: Screw type terminal with cup washers
• Conduit Opening: Accepts ½” Conduit (7/8” (22.3 mm) opening)
• Agency Approvals: UL, CUL, FM, CSA, CE, ISO 9001: 2008