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J21K Series Type J21K Models S127B to 16021 Differential Pressure Switch
Brand: United Electric Controls LtdDoes not ship to OH, United States
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.
Features- Sealed metal bellows sensors
- Welded 316 Stainless Steel Sensors
- Gasketed die-cast aluminum enclosure with epoxy coating
- Single switch output
- Adjustable ranges: 30" Hg vac to 90 psid (-1 to 6 bar)
- 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
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Models matching criteria: 2
Out of Stock
Does not ship to OH, United States
Out of Stock
Does not ship to OH, United States
Specifications
Ambient Temperature Range
- -40° to 71° C (-40° to 160° F), Set Point Typically Shifts less than 1 % of Range for a 28° C (50° F) Ambient Temperature Change
Approvals & Certifications
- ATEX Ex directive (94/9/EC) II 1 G EEx ia IIC T6, Tamb: -50° to 60° C (-58° to 140° F)
- CE
- CSA C22.2, No. 14 File E42272
- GOST R 51330.0, 51330.1, 51330.10 & 51330.14
- Low Voltage Directive (LVD) 73/23/EC & 93/68/EEC
- PED: 97/23/EC
- UL (C,US) 508
Approvals & Certifications
- ISO 9001
Deadband
- psi: 0.1 to 0.7 (kPa: 0.69 to 4.83, Mbar: 6.9 to 48.3)
Electrical Connectors
- 7/8" Diameter Conduit Hole
Electrical Contacts
- Normally Closed
- Normally Open
Electrical Rating
- 1 A at 125 Vac Resistive
- 15 A at 125/250/277 Vac Resistive
- 15 A at 125/250/480 Vac Resistive
- 5 A at 125/250 Vac Resistive
Enclosure Finish
- Epoxy Powder-Coated
Enclosure, Body Material
- Gasketed Die Cast Aluminum
Environmental Protection
- IP66
- NEMA 4X: Watertight Conduit Fitting, Converts 7/8" Hole to 1/2" NPT Fitting
NPT Connection
- 1/2" NPT Female
Operating Pressure
- psi: -14.7 to 300 (kPa: -101.4 to 2,068, bar: -1 to 20.68)
Process Connection Material
- Welded 316L Stainless Steel Bellows
Proof Pressure
- psi: 6 to 300 (kPa: 41.37 to 2,068, bar: 0.41 to 20.68)
Repeatability
- ± 1 % of Full Scale Range
Set Point - Decreasing
- bar: -1 to 1
- inHg: -30 to 0
- kPa: -101.4 to 103.4
- psi: -14.7 to 15
Set Point - Increasing
- bar: -1 to 1
- inHg: -30 to 0
- kPa: -101.4 to 103.4
- psi: -14.7 to 15
Shock
- Set Point Repeats after 15 G, 10 ms Duration
Storage Temperature
- -54° to 71° C (-65° to 160° F)
Switch Type
- One SPDT Snap-Action Switch
System Pressure
- bar: 20.68
- kPa: 2,068
- psi: 300
Vibration
- Set Point Repeats after 2.5 G, 5 to 500 Hz