Extended vertical liquid level sensors

The EVS series of point liquid level switches demonstrate a high degree
of reliability due to the use of non-reactive wetted components and a
unique reed switch designed specifically for level sensing applications.
The sensor utilizes a moving float with an embedded magnet to activate
one of two reed switches located in the sensor body.

As the liquid level raises the float, it moves a magnet from the bottom
switch to the top switch. The use of two switches provides an indication
of three different level conditions.

The reliability of this sensor results from a very simple operating principle,
a single moving part, media compatible wetted materials, and a unique
reed switch design.

The sensor mounts into the top wall of a liquid storage tank using an M16
x 2.0 threaded fitting. The M16 mount is available in an internal or
external configuration. The outputs are simple N.O. or N.C. SPST reed
switches that utilize Ruthenium contact points for reliability. Electrical
outputs are three wires with PVC insulation and optional lengths of 0.5 m
or 2.0 m.