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Dwyer BDPA-04-2-N Adjustable Differential Pressure Switch

Dwyer BDPA-04-2-N Adjustable Differential Pressure Switch
Dwyer BDPA-04-2-N Adjustable Differential Pressure Switch
Product Code : DWYER USA
Product Description

Dwyer BDPA-04-2-N Adjustable Differential Pressure Switch

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 BDPA is available with settings from 0.08" w.c. (20 Pa) to 20" w.c. (5000 Pa). 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).

Product Applications

  • Air filter and ventilator monitoring
  • Industrial cooling circuits
  • Fire-protection damper control
  • Ventilation duct monitoring
  • Fan heater overheating protection
  • Heat exchanger frost protection

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


Contact Us

Sales Office:-Plot No. X/852, Chand Mohalla, Street No: 11 Gandhi Nagar Industrial Area, Near Ramgareya Gurdwara, mobil-9871034100, Delhi, Delhi, 110031, India
Phone :91-11-22083434