Differential Pressure Switch

The J21K Series differential pressure switch monitors the difference between two system pressures or vacuums. It senses excessive flow deviation or verifies that a filter is clogged.
The J21K Series switch’s rugged design – with epoxy-coated enclosure and sealed metal bellows – lends itself to exacting applications. Widely found in refrigeration (chiller) and compressor applications, the J21K Series differential pressure switch is used for filter status monitoring and proof of flow.

Overview

• Rugged, NEMA Type 4X, epoxy coated enclosure (with watertight conduit fitting)
• ​SPDT switch output
• ​Welded 316 stainless-steel or brass sensors
• ​Unique isolated sensor design
• ​Adjustable ranges:
  • 30 “Hg Vac to 90 psid
  • -1 bar to 6,2 bar
• ​UL listed and cUL certified
• ​Optional ATEX or EAC intrinsic-safety compliance
• ​Adjustable deadband option for precise on-off control