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How It Works – Reed Switch

The magnetic float rises or falls with the liquid level, its magnetic field activates the reed switch at a defined point. The sealed contacts close or open instantly, providing a precise, reliable signal for level indication or alarm. With no process contact and no moving parts to wear, the design ensures simple, maintenance-free operation and long service life.

Features

  • Hermetically Sealed Bi-Stable Latching Reed Switch – Actuated by the Penberthy PMG® float for reliable, repeatable performance.
  • Maximum Load – Handles up to 1 amp, 150 VAC/VDC, 25 W.
  • Completely Sealed – Never requires opening, ensuring maintenance-free operation.
  • Simple Integration – Provides a clean input to user-supplied controllers or DCS systems.
  • Flexible Configurations – Available with SPDT or DPDT switch action to suit a wide range of control needs.
  • Easy Installation – Clamps directly to the Penberthy PMG® chamber with no process contact.
  • Field Adjustable – Easily positioned for precise level set points.
  • Built for Reliability – PB100.20 and PB100.20/2 models deliver years of use.