Dwyer BDPA-05-2-N Adjustable Differential Pressure Switch

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Dwyer BDPA-05-2-N Adjustable Differential Pressure Switch Specification

Thread
1/4 NPT Female

Grade
Industrial

Sensor Type
Differential Pressure

Seal Material
Neoprene

Outer Size
95 mm x 58 mm x 38 mm (Approx)

Material
ABS Plastic/Aluminum

Dial Material
Printed Scale

Pointer Material
Plastic

Processing Type
Molded/Assembled

Mount Type
Surface or Panel Mount

Scale Range
0.5-2.0 Inches W.C.

Accuracy
10% of full scale

Finishing
Powder Coated

Measure Pressure Of
Air or Non-combustible Gases

Accessories
Mounting Screws Included

Dwyer BDPA-05-2-N Adjustable Differential Pressure Switch Trade Information

Payment Terms
Cash on Delivery (COD), Cash Against Delivery (CAD), Cash in Advance (CID), Cheque, Cash Advance (CA)

Main Export Market(s)
Australia, South America, Middle East, Africa, Central America, Eastern Europe, Western Europe, Asia, North America

Main Domestic Market
All India

About Dwyer BDPA-05-2-N Adjustable Differential Pressure Switch

Dwyer BDPA-05-2-N Adjustable Differential Pressure Switch

Description

Series BDPA Adjustable Differential Pressure Alarm .80-4.00" w.c.

24 Volt or Battery Powered, Built-in Audible and Visual Alarm

The Series BDPA Adjustable Differential Pressure Alarm with built-in audible and visual set point indication is designed for overpressure, vacuum, and differential pressure applications. The scaled adjustment knob allows changes to the switching pressure to be made without a pressure gage. The silicone diaphragm and PA 6.6 body make the Series BDPA perfect for use with air and other noncombustible gases.

The Series BDPA Adjustable Differential Pressure Alarms offer a versatile range of configurations allowing utilization of their many features. The BDPA can be powered by battery or 24 VDC/VAC line power. If connecting line power, the battery can act as back-up power in case of power outage. When set point threshold is reached, a local loud audible buzzer and bright LED will indicate periodically notifying of set point activation. An SPDT contact may also be wired to send a signal remotely to a DDC or building management system. A snooze button located through an opening in the cover can be pressed by the user to manually disengage the audible and visual indication until a maintenance operation is performed. If the instrument is mounted where it is difficult to access, a remote contact may be connected allowing the user to deactivate the buzzer and LED at the remote contact location.

The Series BDPA Differential Pressure Alarm's great functional versatility makes it perfect for filter, fan, and ventilation applications or any retrofit job where installing electrical wiring proves cost-prohibitive.

Note: For a 1/2" npt connection, use the 1/2" conduit fitting adapter (A-483).

Approvals

CE Approval
Reduction of Hazardous Substance (RoHS)

Specification

Service	Air and noncombustible, compatible gases
Wetted Materials	Diaphragm: Silicone; Housing: Switch Body: PA 6.6 and POM; Cover: Polystyrene
Temperature Limits	32 to 122°F (0 to 50°C)
Pressure Limits	40" w.c. (10 kPa)
Electrical Rating	1.0 A @ 30 VDC/VAC
Switch Type	SPDT
Alarm Indicationrm.	Red LED and audible alarm
Alarm Level	Approximately 90 db at 4" (10 cm)
Alarm Acknowledge	Button press
Power Requirements	16 to 30 VDC, 18 to 30 VAC or 3.6 V LS14250 lithium metal battery, installed functional, user replaceable. Battery acts as back-up if power is lost
Battery Life	Approximately 1.5 years with 3.6 V/1.2 Ah
Repeatability	±15% FS
Electrical Connections	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
Mounting Orientation	Vertically, with pressure connections pointing downwards
Enclosure Rating	IP21
Weight	6.1 oz (173 g)
Agency Approvals	CE, RoHS

Reliable Differential Pressure Monitoring

Engineered for critical HVAC and industrial applications, the Dwyer BDPA-05-2-N ensures accurate detection of differential pressure in air or non-combustible gas systems. Its adjustable mechanical design allows precise control to match diverse operational requirements, offering peace of mind and operational efficiency.

User-Friendly Installation and Operation

Designed for practicality, this switch features a simple screw terminal electrical connection and accommodates surface or panel mounting with included screws. Its adaptable format allows installation in any orientation, making setup quick and straightforward for engineers and technicians.

FAQs of Dwyer BDPA-05-2-N Adjustable Differential Pressure Switch:

Q: How is the Dwyer BDPA-05-2-N pressure switch installed?

A: Installation is accomplished via surface or panel mounting using the included screws. The device can be positioned in any orientation, and the electrical connection is made through screw terminals for reliable connectivity.

Q: What environments is this pressure switch suitable for?

A: With an IP54 rating for splash resistance and a medium temperature range from -20C to +85C, this switch is suitable for use in diverse industrial environments where air or non-combustible gases are monitored.

Q: When should the adjustable deadband feature be used?

A: The adjustable deadband allows customization of the switchs responsiveness to pressure changes. This feature is particularly useful when precise control is required to avoid frequent cycling in varying pressure conditions.

Q: Where can this differential pressure switch be applied?

A: It is ideal for HVAC systems, air handling units, filter monitoring, and a variety of industrial gas systems requiring reliable detection of differential pressure.

Q: What are the benefits of using this pressure switch in industrial settings?

A: It delivers durability, accuracy (10% of full scale), and versatile installation. Its industrial-grade construction and precise pressure range make it dependable for system safety, maintenance, and performance optimization.

Q: How does the adjustable scale range improve user process control?

A: The adjustable scale range of 0.5 to 2.0 inches W.C. allows users to set the pressure switch to activate at desired points, granting greater control over system pressure thresholds and enhancing operational reliability.

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