Pneumatic Airflow Differential Pressure Switch, Low Setpoint Range.
Overview
Senses differential air pressure in HVAC systems and provides and on/off output. A typical application is sensing fan shutdown in a unit ventilator to close the outdoor air damper.
Features
Reliable pneumatic operation.
Adjustable setpoint (switching pressure).
Eliminates electrical interlock wiring.
Product Specifications
Application
Pneumatic Airflow Differential Pressure Switch
Dimensions (in.)
6 1/8 in. high x 4 1/8 in. wide x 2 13/16 in. deep
Dimensions (mm)
156 mm high x 105 mm wide x 72 mm deep
Temperature Range (F)
0 F to 135 F
Temperature Range (C)
-18 C to +57 C
Mounting
Vertical Mount
Pressure Range (psi)
Switching Pressure--0.15 to 12.0 in. w.c.; 0.15 to 2.0 in. w.c.
Pressure Range (kPa)
Switching Pressure--0.037 to 2.99 kPa; 0.037 to 0.50 kPa
Switching Action
On/Off
Switch Type
On/Off Pneumatic Airflow Switch
Air connections
Sensing Inputs: 1/4 in. compression fittings; Control Air: Barb for 1/4 in. (6 mm) or 3/8 in. (10 mm) O.D. plastic tubing
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