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Fixed setting pressure switches
Applications
The new range of Eliwell electromechanical pressure switches with fixed setting are compact, light and easy to install.
They are typically designed to protect refrigeration systems against critical conditions by setting high or low pressure limits. The stainless-steel control element is designed to grant an enhanced product life-cycle, with high performance.
Thanks to its advanced manufacturing technology, Eliwell pressure switches offer the best solutions for applications in refrigeration systems, residential and commercial air conditioning systems, automotive systems, ice maker, etc. They can also be used to control pressure in hydraulic and steam systems, air compressors and industrial equipments.
- Safe and reliabile product thanks to welding process ofthe stainless steel diaphragm able to grant a perfect seal.
- Adopting standard thread, 7/16-20 UNF female with valve opener or brass copper tube 6.0/6.35 mm diameter, easy to install and no special requirement for mounting and fixing.
- Any pressure value between -1~55 bar (up to 180 for CO2) can be made.
- SPST or SPDT switch, normally open or normally closed.
Technical Data
| Compatible refrigerants | HCFC, HFC, HFO, HC, CO2 | |
| Working ambient temperature | -30 ... +80 °C (-22 ... 176 °F) | |
| Storage and transport temperature | -60 ... +105 °C (-76 ... 221 °F) | |
| Fluid temperature | -54 ... +135 °C (-65.2 ... 275 °F) | |
| Contacts configuration | SPST-NO, SPST-NC, SPDT | |
| Reset mode | Automatic or manual | |
| Pressure range | Auto Reset | -1 ... +55 bar (-14.50 ... 797.70 psi) |
| Manual Reset | 10 ... 55 bar (145.03 ... 797.70 psi) | |
| CO2 Applications | 90 ... 180 bar (1305.33 ... 2610.67 psi) | |
| Maximum pressure system | 0 ... 1.5 bar | 28 bar |
| 1.5 .... 31 bar | 45 bar | |
| >31 bar | 1.43xWork Pressure | |
| Standard electrical connection | Fast-on 1/4” (6.35 mm / 0.25 in.) Wired lead 1.0 m (3.28 ft) UL1015 (0.82 mm2 / 18 AWG) Other electrical connection upon request |
|
| Standard pressure fitting | 7/16-20 UNF with valve opener Other fittings upon request |
|
| Contact resistance | < 50 mΩ | |
| Leakage current | < 0,75 mA | |
| Flame resistance | 94V-0 | |
| Protection degree | IP67 (Wired version) | |