Product Overview

ManualsBrandsDwyer ManualsHVAC ControlsAdjustable Differential Pressure Switch w/ 1/2" NPT Connection (.20" - 2.0" W.C.)

Differential Pressure Switches

PRESSURE

DWYER INSTRUMENTS, INC. | dwyer-inst.com

HVAC DIFFERENTIAL PRESSURE SWITCHES

With Dual Scale Field Adjustable Set Point Knob

The Series ADPS/EDPS/BDPA HVAC Differential Pressure Switches are 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/BDPA are 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 series

BDPA Adjustable Differential Pressure Alarms offer a versatile range of congurations

allowing utilization of their many features including buzzer and LED notication, and

battery or line powered. The compact size, adjustment knob and low cost make the

ADPS/EDPS/BDPA the perfect choice for HVAC applications.

FEATURES/BENEFITS

• 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

APPLICATIONS

• Air lter and ventilator monitoring

• Industrial cooling circuits

• Fire-protection damper control

• Ventilation duct monitoring

• Fan heater overheating protection

• Heat exchanger frost protection

2-21/64

[59]

19/64 [7.5]

51/64 [18]

Ø11/64

[Ø4.5]

21/64

[8.5]

2-9/16 [65]

1-31/32

[50]

Ø15/64

[Ø6]

2-17/64

[57.5]

7/8

[22]

[P2] -+ [P1]

ADPS

EDPS

BDPA

ADPS

EDPS

A-480

Process Tubing Options: See page 453 (Gage Tubing Accessories)

SERIES ADPS/EDPS/BDPA

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 UL 94 V-0

rated.

Temperature Limits: Process and

ambient temperature from -4 to 185°F

(-20 to 85°C).

Storage: -40 to 185°F (-40 to 85°C).

Pressure Limits: Max. operating

pressure: 40 in 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.

Process Connections: 5/16˝ (7.94 mm)

outside diameter tubing, 1/4˝ (6.0 mm)

inside diameter tubing.

Enclosure Rating: NEMA 13 (IP54).

Mounting Orientation: Vertically,

with pressure connections pointing

downwards.

Mechanical Working Life: Over 10

switching operations.

Weight: 4.4 oz (125 g).

Agency Approvals: ETL approved to

UL508 and CSA C22.2#14 (EDPS only).

BDPA

Audible

buzzer

Battery

Test/snooze

button

LED

Contact

output

Power

input

IP 54

CABLE GLAND INSERT

[P1]

[P2]

1-31/32

[50]

2-9/16 [65]

2-1/4 [57]

45/64

[18]

Ø11/64

[Ø4.5]

21/64

[8.5]

51/64 [18]

9/32 [7]

2-21/64

[59]

Ø15/64

[Ø6]

IP 54

CABLE GLAND INSERT

[P1]

[P2]

1-31/32

[50]

2-9/16 [65]

2-1/4 [57]

45/64

[18]

Ø11/64

[Ø4.5]

21/64

[8.5]

51/64 [18]

9/32 [7]

2-21/64

[59]

Ø15/64

[Ø6]

MODEL CHART - ADPS

Model

Set Point Range

in w.c. (Pa)

Approx. Dead Band @

Min Set Point in w.c. (Pa)

Approx. Deadband @

Max Set Point in w.c. (Pa)

ADPS-08-2-N

ADPS-04-2-N

ADPS-03-2-N

ADPS-05-2-N

ADPS-06-2-N

ADPS-07-2-N

0.08 to 1.20 (20-300)

0.12 to 1.60 (30-400)

0.20 to 2.00 (50-500)

0.80 to 4.00 (200-1000)

2.00 to 10.00 (500-2500)

4.00 to 20.00 (1000-5000)

0.04 (10)

0.06 (15)

0.08 (20)

0.4 (100)

0.6 (150)

1.0 (250)

0.05 (12)

0.09 (23)

0.5 (130)

0.8 (200)

1.4 (350)

Note: For optional 1/2˝ NPT conduit connection, change -2-N to-1-N. Models that include installer kit

add -C to the end of the model number (-2-N cable gland models only). Installer kit includes two static

tips and 7 ft of PVC tubing. Order installer kit separately with 1/2˝ NPT conduit connection models.

See A-481 in the accessories list. Consult factory for bulk packaging option.

MODEL CHART - EDPS

Model

Set Point Range

in w.c. (Pa)

Approx. Dead Band @

Min Set Point in w.c. (Pa)

Approx. Dead Band @

Max Set Point in w.c. (Pa)

EDPS-08-1-N

EDPS-04-1-N

EDPS-03-1-N

EDPS-05-1-N

EDPS-06-1-N

EDPS-07-1-N

0.08 to 1.20 (20-300)

0.12 to 1.60 (30-400)

0.20 to 2.00 (50-500)

0.80 to 4.00 (200-1000)

2.00 to 10.00 (500-2500)

4.00 to 20.00 (1000-5000)

0.04 (10)

0.06 (15)

0.08 (20)

0.4 (100)

0.6 (150)

1.0 (250)

0.05 (12)

0.09 (23)

0.5 (130)

0.8 (200)

1.4 (350)

Note: For optional M20 cable gland connection, change -1-N to-2-N.

ACCESSORIES

Model Description

A-288

A-289

A-480

A-481

A-489

“L” type metal mounting bracket with screws

“S” type metal mounting bracket with screws

Plastic static pressure tip

Installer kit, includes 2 plastic static pressure

tips & 7´ (2.1 m) of PVC tubing

4˝ straight static pressure tip with ange

MODEL CHART - BDPA

Model

Set Point Range

in w.c. (Pa)

Approx. Dead Band @

Min Set Point in w.c. (Pa)

Approx. Dead Band @

Max Set Point in w.c. (Pa)

BDPA-08-2-N

BDPA-04-2-N

BDPA-03-2-N

BDPA-05-2-N

BDPA-06-2-N

BDPA-07-2-N

0.08 to 1.20 (20 to 300)

0.12 to 1.60 (30 to 400)

0.20 to 2.00 (50 to 500)

0.80 to 4.00 (200 to 1000)

2.00 to 10.00 (500 to 2500)

4.00 to 20.00 (1000 to 5000)

0.04 (10)

0.06 (15)

0.08 (20)

0.4 (100)

0.6 (150)

1.0 (250)

0.05 (12)

0.09 (23)

0.5 (130)

0.8 (200)

1.4 (350)

YEAR LIMITED

WARRANTY

Pressure_2021.indb 45 7/15/20 8:16 AM