High-pressure external cage liquid level switch
High Pressure Liquid Level Switches are displacer actuated units, utilizing a single switch mechanism for level alarm or control functions. These units are designed for service pressures up to 5000 psig (345 bar) and liquids with specific gravities of 0.40 and above.
Technology
External cage switches
A permanent magnet is attached to a pivoted switch actuator. As the float/displacer rises following the liquid level, it raises the attraction sleeve into the field of the magnet, which then snaps against the non-magnetic enclosing tube, actuating the switch. The enclosing tube provides a static pressure boundary between the switch mechanism and the process. On a falling level, the float/displacer deactivates the switch.
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Features
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Applications
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Operating principle
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Approvals
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Downloads
Settings
- Fabricated carbon steel cages
- Model B74 available with 304 or 316 stainless steel cages as standard
- Inconel displacer spring and stainless steel trim
- Stainless steel displacers
- Sealed or flanged cages
- Pressures to 5000 psig (345 bar)
- Temperatures to +750 °F (+400 °C)
- Specific gravity as low as 0.40
Options
- Special levels/body extensions
- 316 and 304 stainless steel chambers
- NACE construction
- Gold switch contacts
- Interface detection
- Vent and drain connections
| ATEX | Ex d, Ex ia |
|---|---|
| CCOE | Ex d |
| CSA | XP |
| FM | XP |
| EAC (GOST) |
Ex d, Ex ia |
| IEC | Ex d, Ex ia |
| Inmetro | Ex d |
| Korea |
Ex d |
| NEPSI |
Ex d |
| SIL |
SIL 2 (1oo1) |
Other approvals are available. Consult factory for more details.
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Approvals and certificates
API 2350 Overfill Prevention
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Instruction manuals
Chemical Processing
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Product catalogs
Food and Beverage
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