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4250 Hazardous Area Temperature & Pressure Switch
The 4250 Hazardous Area Temperature / Pressure Switch is ideal for providing a quick action switch at set points on engine and compressor coolants systems, process control points, lubrication systems and alarm systems in hazardous duty locations. Well established and long proven pressure and temperature sensing methods enable precise and reliable operation largely unaffected by changes in ambient conditions. These units are inexpensive and easy to install since multifunction and dual switching types share common housings. Other types include: 4251, 4252, 4253, 4254, 4255
Features and Benefits
- Flame proof protection (ATEX certified)
- Single or dual pressure
- Single or dual temperature
- Snap acting
Specifications
| Housing material: | Cast aluminum | |
| Diaphragm: | Nitrile or Viton | |
| Max. pressure on diaphragm: | 24.1 bar | 350 psi |
| Max. pressure on temp. elements: | 54.04 bar | 800 psi |
| Max. case temp.: | 40°C (T6) 55°C (T5 - to special order) |
104°F 131°F |
| Max. net weight: | 2.1 kg | 4.6 lbs |
| EC type examination cert: | Baseefa 03ATEX0633X | |
| ATEX Certification: | The ATEX Directive meets EU directives detailing equipment and work conditions allowable in an environment with an explosive atmosphere. | |
Applications
Provides snap switch action at set points on:
- Engine coolant systems
- Process control points
- Alarm systems
- Compressor coolant systems
- Lubrication systems
- Hazardous are applications
Operation
The 4250 Series is designed for use wherever explosionproof switches are needed to sense pressure or temperature. Several types are available for sensing dual temperatures, dual pressures or single pressure and temperature points. Pressure ranges from 5-250 psi (35-1723 kPa) and temperature ranges from well16-118°C (60-245 °F) are available. Well established and long proven pressure and temperature sensing methods enable precise and reliable operation largely unaffected by changes in ambient conditions. These units are easy to install since multi-function and dual switching types share common housings.