The most popular Series 1900 Compact Low Differential Pressure Switches combine advanced design and precision construction to make these switches able to perform many of the tasks of larger, costlier units. Designed for air conditioning service, they also serve many fluidics, refrigeration, oven and dryer applications. Series 1900 switches have set points from 0.07 to 20 in w.c. (1.8 to 508 mm). Set point adjustment is easy with a range screw located inside the conduit enclosure. Internal location helps prevent tampering. UL, CE and CSA are listed, and FM approved. For use with air or compatible gages.

Applications

• Air conditioning refrigeration coil icing detection; defrost cycle initiation
• Clogged filter detection
• Variable air volume controller