Description
The Dwyer Instruments 1911-00 Differential Pressure Switch that activates at pressure between 0.07″ and 0.15″ of water column. This component monitors pressure variations across filters, coils, or ductwork in HVAC and ventilation systems, electrical circuits when differential thresholds are exceeded. The SPDT configuration provides both normally open and normally closed contacts, enabling versatile control applications. Supplied without an enclosure, it is mounted directly to equipment or install it within control panels where it signals filter replacement needs or air flow restrictions. The systems responds to subtle pressure changes, protecting equipment from reduced airflow conditions.
