Tilt level switches

Tilt switch:

Tilt level switches are used to measure the level of solid and bulk materials. The units can be used as indicators of high levels to eliminate bin overflow or control levels in open piles.

The tilt switches are also useful for determining overload or underload on conveyor belts. Each tilt switch has a threaded bore for attaching extension actuators that can increase the repeatability of the sensing and protect the tilt switch against direct contact with course material. Monitor offers two different tilt switch models, each suitable for different applications.

Working of tilt switch:

Tilt switches are hung by stainless steel chain from the top of the tank.


As the tank fills with the filling material, it touches the tilt level switch and begins to incline. When the switch slopes above 20 degrees due to the increase in stored material, the internal ball detects the limit switch. The output of the limit switch changes contact and this contact change is used to determine the position of the level. Widely used for hopper / silo detection at the upper limit, detection of plugged chute, etc.

As the material falls away from the enclosure of the switch (or the extension actuator) and the unit becomes upright, the ball returns to its original centered position, which causes the switch to operate again. The change in the status of the internal switch is accessible to the user to signal alarms, lights or PLC interfaces.

Advantages of Tilt switches:

  • Allow level detection of grains, granules, pellets, or ingredients in bins, tanks and silos

  • Works in powders and solid materials

  • Can be mounted on the top of the tank or over a conveyor belt.

  • Suitable for open storage applications.