J21K Series
Differrential Pressure Switch
The J21K differential pressure switch monitors the difference between two system pressures or vacuums and senses excessive flow deviation, or verifies that a filter is clogged.
The J21K’s rugged design – with epoxy coated enclosure and sealed metal bellows – lends itself to exacting applications. Widely used in refrigeration (chiller) and compressor applications, the J21K can be used for filter status monitoring and proof of flow.
The J21K differential pressure switch monitors the difference between two system pressures or vacuums and senses excessive flow deviation, or verifies that a filter is clogged.
The J21K’s rugged design – with epoxy coated enclosure and sealed metal bellows – lends itself to exacting applications. Widely used in refrigeration (chiller) and compressor applications, the J21K can be used for filter status monitoring and proof of flow.
Overview
Highlights
- Rugged, NEMA 4X, epoxy coated enclosure
- SPDT switch output
- Welded 316 stainless steel or brass sensors
- Unique isolated sensor design
- Adjustable ranges:
- 30 “Hg Vac to 90 psid
- 1 bar Vac to 6,2 bar d
- UL listed and cUL certified
- Optional ATEX or GOST intrinsic safety compliance
- Designed to meet Enclosure Type 4X
- SPDT switch output
- Adjustable deadband option for precise on-off control
- Brass or welded stainless steel bellows sensors
- External manual reset option
Highlights
- Designed to meet Enclosure Type 4X (with watertight conduit fitting)
- UL listed and cUL certified
- Optional ATEX and Rostechnadzor (GOST-R) intrinsic safety compliance
- Optional adjustable deadband
- Single switch output
- Opposing bellows design
