Dwyer Instruments have released the BDPA series adjustable differential pressure alarms. Their built-in audible and visual set point indication is designed for overpressure, vacuum and differential pressure applications.
They feature a scaled adjustment knob which allows changes the switching pressure to be made without the need for a separate pressure gauge. The Series BDPA adjustable differential pressure alarms offer a versatile range of configurations. This allows for the utilization of their many features.
BDPA adjustable differential pressure alarms 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 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 alarms are versatile. They are ideal for filter, fan, and ventilation applications or for retrofit jobs where installing electrical wiring can be costly.