Dwyer Series BDPA Adjustable Differential Pressure Alarm

The Series BDPA Adjustable Differential Pressure Alarm with built-in audible and visual setpoint indication is designed for overpressure, vacuum and differential pressure applications. The scaled adjustment knob allows changes to the switching pressure to be made without the need for a separate pressure gauge.

The alarms offer a versatile range of configurations. Each 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 setpoint threshold is reached, a loud, audible buzzer and bright LED will indicate periodically notifying of setpoint 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 is suitable for filter, fan and ventilation applications or any retrofit job where installing electrical wiring proves cost-prohibitive.