1921-1

1921-1 is a series AT-1900 ATEX/IECEx approved compact low differential pressure switch. This is most popular switch and is now available in a flameproof package. This pressure switch combines advanced design and precision construction to make this switch able to perform many of the tasks of larger, costlier units. Typical applications include hazardous area low pressure applications, air conditioning refrigeration coil icing detection; defrost cycle initiation, clogged filter detection, variable air volume controller.

• Model without conduit with HP back port
• Range from 0.4 - 1.6" water column
• Flameproof enclosure protects the device in hazardous areas
• Compact size and repeatability provide a high-value switch for many industrial and OEM applications
• Range screw protected inside switch enclosure prevents tampering
• Increased response time at low pressures with LD port configuration
• SPDT switch type
• Diaphragm in vertical position
• IP66 enclosure rating
• Aluminum housing material and texture epoxy coat RAL7015