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Series ADPS/EDPS Differential Pressure Switch

With Dual Scale Field Adjustable Set Point Knob

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 AT1ADPS 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.

Models & Ordering

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Check for these products in our Overstock Inventory

Model Description Usually Ships Price Order
ADPS-03-2-N
Ships: Next Day>
Price: $21.25
Adjustable differential pressure switch, set point range 0.20 to 2.00" w.c., M20 connection. Next Day $21.25 Order
ADPS-04-2-N
Ships: Next Day>
Price: $21.25
Adjustable differential pressure switch, set point range 0.12 to 1.60" w.c., M20 connection. Next Day $21.25 Order
ADPS-05-2-N
Ships: Next Day>
Price: $21.25
Adjustable differential pressure switch, set point range 0.80 to 4.00" w.c., M20 connection. Next Day $21.25 Order
ADPS-06-2-N
Ships: Next Day>
Price: $21.25
Adjustable differential pressure switch, set point range 2.00 to 10.00" w.c., M20 connection. Next Day $21.25 Order
ADPS-07-2-N
Ships: Next Day>
Price: $21.25
Adjustable differential pressure switch, set point range 4.00 to 16.00" w.c., M20 connection. Next Day $21.25 Order
ADPS-08-2-N
Ships: Next Day>
Price: $21.25
Adjustable differential pressure switch, set point range 0.08 to 1.20" w.c., M20 connection. Next Day $21.25 Order

Specifications

Service:
Air and non-combustible, compatible gases.
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 UL94 V-0 rated.
Temperature Limits:
Process and ambient temperature from -4 to 185°F (-20 to 85°C).
Pressure Limits:
Max. Operating Pressure: 40" w.c. (10 kPa) for all pressure ranges.
Switch Type:
Single-pole double-throw (SPDT).
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.
Process Connections:
5/16" (7.94 mm) outside diameter tubing, 1/4" (6.0 mm) inside diameter tubing.
Enclosure Rating:
NEMA 3 (IP54).
Mounting Orientation:
Vertically, with pressure connections pointing downwards.
Mechanical Working Life:
Over 106 switching operations.
Weight:
5.6 oz (160 g).
Agency Approvals:
CE, ETL approved to UL508 and CSA C22.2#14 (EDPS only), RoHS.

Features

  • Adjustment know 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

Accessories

Model Number Description Usually Ships Price Order
“L” type metal mounting bracket with screws. A-288 “L” type metal mounting bracket with screws. Next Day $3.50 Order
“S” type metal mounting bracket with screws. A-289 “S” type metal mounting bracket with screws. Next Day $3.50 Order
Plastic static pressure tip. A-480 Plastic static pressure tip. Next Day $0.80 Order
M20 x 1.5 cable gland fitting adapter. A-482 M20 x 1.5 cable gland fitting adapter. Next Day $1.60 Order
1/2 A-483 1/2" conduit fitting adapter. Next Day $1.60 Order
Metal 90° static tip. A-484 Metal 90° static tip. Consult Factory $1.80 Order
Clear plastic cover for ADPS. A-485 Clear plastic cover for ADPS. Next Day $1.50 Order
4 A-489 4" 303 SS straight static pressure tip with flange. Next Day $6.67 Order
Installer kit, (includes 2 static pressure tips and PVC tubing). A-481 Installer kit, (includes 2 static pressure tips and PVC tubing). Next Day $4.25 Order

Videos

Product Literature

Manuals

Catalog Pages

Approvals

Drawings

Questions

Question
EDPS series, can the 'delta-P' screw be used to increase or decrease deadband?
Answer
The ∆P screw should never be adjusted. It is used to calibrate the instrument to make sure it will switch within the specified range.
Question
Will a Dwyer pressure switch be damaged if the pressure exceeding the maximum set-point is applied to the switch?
Answer
No. Not unless the maximum pressure rating of the switch is exceeded.

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