Have a live application? Use our United Electric Product Overview and Quick Selection Guide to configure the model and options for your requirement:
ABLE are United Electric’s Exclusive Representative for Sales and Service in the UK and Ireland and can assist you and your customers in the following areas:
- Application expertise
- Our factory trained engineers offer after sales support, service and maintenance (contracts available)
- Offer advanced United Electric pressure / temperature switch product training, either in-person or via video call.
Further to the above, ABLE can offer custom solutions based on your individual requirements. Email us now at [email protected]
United Electric J21K Series Differential Pressure Switch
ABLE Instruments are United Electric’s Exclusive Representative for Sales and Service in the UK and Ireland, including the UE J21K Series, for alarm, safety and emergency shutdown applications requiring a higher switch sensitivity. It monitors the disparity between process pressures or vacuum using sealed, opposing bellows sensors. Typical applications that utilize the J21K Series include proof of flow, filter monitoring, vacuum pumps, chillers, and compressors.
The UE J21K monitors the difference between two system pressures or vacuums, senses excessive flow deviation, or verifies that a filter is clogged. The J21K’s differential pressure switches’ rugged design lends itself to exacting applications. Widely used in refrigeration and compressor applications, the J21K can be used for filter status monitoring and proof of flow. A welded bellows sensor provides leak-free protection with precise on-off control through adjustable deadband option The United Electric J21K Series achieves application versatility through a variety of ranges and microswitches.
Features:
- Rugged, NEMA 4x, epoxy coated enclosure
- Sealed metal bellows sensors
- SPDT switch output
- Welded 316 stainless steel or brass sensors
- Optional ATEX and Rostechnadzor (GOST-R) intrinsic safety compliance
- Adjustable Ranges: 30 “Hg Vac to 90 psid (-1 bar Vac to 6,2 bar)
- UL listed and cUL certified
- Unique isolated sensor design
Have a particular application / project in mind? We’d welcome a call on +44 (0) 1189 169 420, or email us now at [email protected]
J21K Series Specifications:
Ambient Temperature Limits | -40 to 160°F (-40 to 71°C); Set point typically shifts less than 1% of range for a 50°F (28°C) ambient temperature change |
|---|---|
Set Point Repeatability | ±1% of full scale range |
Shock | Set point repeats after 15 G, 10 millisecond duration |
Vibration | Set point repeats after 2.5 G, 5-500 Hz |
Enclosure | Die cast aluminium, epoxy powder coated, gasketed |
Enclosure Classification | Designed to meet enclosure type 4X requirements with M900 option (watertight conduit fitting) |
Switch Output | One SPDT snap action switch; switch may be wired “normally open” or “normally closed” |
Electrical Rating | 15 A 125/250/480 VAC resistive. Electrical switches have limited DC capabilities. Consult ABLE for additional information. |
Weight | Approximately 2 lbs. (0.90 kg.) |
Electrical Connection | 7/8″ diameter conduit hole |
Pressure Connection | Models 127-150, 232-254, 357, 16020: 1/4″ NPT (female) Models S127B-S150B, 16021: 1/2″ NPT (female) |
OPTIONAL APPROVALS | |
United States / Canada | UL Listed, cUL Certified UL 508; CSA C22.2, no. 14 File # E42272 |
Europe | Low Voltage Directive (LVD) 73/23/EC & 93/68/EEC Compliant to LVD Products rated lower than 50 VAC and 75 VDC are outside the scope of the LVD Pressure Equipment Directive (PED) 97/23/EC Compliant to PED Products rated lower than 7.5 psi are outside the scope of the PED ATEX Directive (94/9/EC) II 1G Ex ia IIC T6 Ga (OPTIONAL – code M405) -50°C ≤ Tamb ≤ +60°C UL International DEMKO A/S (N.B.#0539) Certificate # DEMKO II ATEX 1105261X EN 60079-0, 60079-11, 60079-26 |
Russia | Rostechnadzor Permit and GOST-R CoC (OPTIONAL – code M406) 0ExiaIICT6 Tamb = -50C to +60C NANIO CCVE Certification Center Certificate # ROSS US.GB05.Bo2933 GOST R 51330.0, 51330.1, 51330.10 & 51330.14 |
