Technology of Boiler and Water Column Liquid Level Switch
Boiler and Water Column Liquid Level Switch uses a long-lasting magnet. A permanent magnet➀is attached to a pivoted switch actuator and adjustment screw ➁. As the float ➂ rises following the liquid level, it raises the attraction sleeve ➃ into the field of the magnet,which then snaps against the non-magnetic enclosing tube ➄, actuating the switch ≈. The enclosing tube provides a static pressure boundary between the switch mechanism and the process.On a falling level, an inconel spring retracts the magnet, deactivating the switch.
Features of Boiler and Water Column Liquid Level Switch
- Easy inspection of float chamber through removable head
- Cast iron or fabricated steel float chambers
- 316 and 316L stainless steel floats
- Brass chamber liner standard in B24, B25 and W25 models
- Right or left hand water column mounting
- Try cock tappings and sight glass tappings available
- Process temperatures up to +1000° F (+538° C)
- Multiple switch capability
- Working steam pressure to 600 pounds
- Choice of switch mechanisms: Pneumatic Hermetically sealed Dry contact
- Choice of switch mechanism enclosures: NEMA 1 carbon steel for pneumatic TYPE 4X/7/9 Class I, Div. 1, Groups C & D, polymer coated aluminum TYPE 4X/7/9 Class I, Div. 1, Group B, polymer coated aluminum
- Optional high temperature insulation available. See bulletin 41-106.
Application of Boiler and Water Column Liquid Level Switch
- Condensate receiver control
- Flash tank high level alarm
- Water tube boiler low water cutoff
- Boiler steam chest high level alarm
- Boiler feedwater pump control
- Day tanks
- Boiler low water cutoff
- Holding tanks
Brochure
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