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SPST-N.C. (1 Form B) |

A Form B Fluid Sensor contains a single pole single throw, normally closed (SPST-N.C.) reed switch.  It's contacts are the normally closed (Form B) position before any magnetic field is applied.  Fluid sensors and floats can be configured to function as a normally closed or Form B reed switch.  A Form B fluid sensor containing a normally open reed switch that uses it's floating magnet to keep it in the closed position, as with our horizontal mount LS03 series Liquid Level Sensor. Check out these animated Magnet Interaction examples showing the reed switches in their sensing environment.

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Compact single level vertical mount LS01 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors.

Compact single level vertical mount LS02 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. IP68 only up to screw in thread.

Compact stainless steel single level vertical mount LS02 (S) Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 120°C. IP68 only up to screw in thread.

Compact single level horizontal mount LS03 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 150°C.

LS04 Series Liquid Level Sensor

Versatile LS04 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring. Reservoir, tank, bottle or other container mounting configurations. Up to 6 floats, 1W-100W rated power, other cables, connectors.

Versatile stainless steel LS05 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring capable of high temperature resistance up to 200°C (SS) and pressure up to 12 bar. Multiple floats with minimum 1.5” spacing, 1W-100W rated power, other cables, connectors. UL Approved.

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