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HVAC Differential Pressure Switch

Adjustable differential pressure switch, set point range 0.20 to 2.00" w.c., 1/2" NPT connection.

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Data Sheet (PDF)

$26.85

Item# ADPS-03-1-N

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Adjustment knob changes switching pressure easily with a pressure gage reducing components for application
Low cost device makes it an excellent solution in BAS and HVAC applications requiring duct control and monitoring
Relay contact allows simple integration with DDC or building systems

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ADPS-03-1-N Model Options

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Switch Type

Pressure Range

Pressure Port Size

Pressure Port Type

Deadband Range

Features

Pressure Type

Deadband

Specs

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Weight 4.4 oz (125 g).
Electrical Rating Max. 1.5 A res./0.4 A ind./250 VAC, 50/60 Hz; Max. switching rate: 6 cycles/min.
Electrical Connections Push-on screw terminals. M20x1.5 with cable strain relief or optional 1/2" NPT connection.
Pressure Limits Max. Operating Pressure: 40" w.c. (10 kPa) for all pressure ranges.
Temperature Limits Process and ambient temperature from -4 to 185°F (-20 to 85°C).
Wetted Materials ADPS: Diaphragm material: Silicone; Housing material: POM; Switch body: PA 6.6; Cover: Polystyrene; EDPS: Diaphragm material: Silicone; Housing material: Switch body: PA 6.6; Cover: Polystyrene; Materials UL 94 V-0 rated.
Compliance CE, ETL approved to UL508 and CSA C22.2#14 (EDPS only).
Enclosure Rating NEMA 3 (IP54).
Mounting Orientation Vertically, with pressure connections pointing downwards.
Mechanical Working Life Over 106 switching operations.
Process Connections 5/16" (7.94 mm) outside diameter tubing, 1/4" (6.0 mm) inside diameter tubing.
Service Air and non-combustible, compatible gases.
Storage -40 to 185°F (-40 to 85°C).
Switch Type Single-pole double-throw (SPDT).

The Series ADPS/EDPS Adjustable Differential Pressure Switch is designed for pressure, vacuum, and differential pressures. The dual scaled adjustment knob in inches water column and pascals allows changes to the switching pressure to be made without a pressure gage. The ADPS/EDPS is available with settings from 0.08 in w.c. (20 Pa) up to 20 in w.c. (5000 Pa). The silicone diaphragm and PA 6.6 body make the series ADPS ideal for use with air and other noncombustible gases. Series EDPS models meet UL508 and are constructed of plenum rated plastics. The compact size, adjustment knob and low cost make the ADPS/EDPS the perfect choice for HVAC applications.

Please see Series AT-ADPS for ATEX approved.

Product Applications

Monitoring air filters and ventilators.
Monitoring industrial cooling-air circuits.
Overheating protection for fan heaters.
Monitoring flows in ventilation ducts.
Controlling air and fire-protection dampers.
Frost protection for heat exchanges.