Float Sensors

2 products

Float Sensors, also known as float switches, are one of the most widely used and reliable methods for liquid level sensing and monitoring. These devices are used for a variety of purposes, including for liquid level control and monitoring in tanks, sumps, and industrial processes. The most popular type of float switch is the reed switch, which works by sensing the position of a magnetic float. Reed switch float switches are economical and easy to install. They are able to provide accurate and reliable level sensing for many liquids. Omega Engineering’s float operated continuous level sensors have 316 SS wetted parts, come in ranges up to six feet, and are available with 4-20 mA, or voltage outputs.

Frequently Asked Questions

Float sensors typically operate as point-level detectors that trigger a specific action, such as an alarm or pump start, when a liquid reaches a certain height. In contrast, level transmitters provide a constant data stream showing the exact liquid volume at every stage of the tank's capacity.

The collection includes sensors manufactured from 316 stainless steel for high-temperature and food-grade use, as well as polypropylene or PVC for chemical resistance. These materials prevent degradation and housing failure when the sensors are submerged in aggressive acids, oils, or saline solutions.

Yes, most float sensors are designed with a reversible internal reed switch that allows the user to select the desired electrical state. By simply flipping the float or adjusting the internal wiring, the sensor can be set to either complete or break a circuit when the liquid rises.

The range features both vertical sensors for top-of-tank installation and horizontal models for side-wall mounting. Side-mount sensors are particularly useful in compact machinery or shallow reservoirs where there is insufficient overhead clearance for a traditional vertical probe.

Magnetic float sensors utilize a sealed reed switch that is activated by a magnet inside the moving float, meaning there are no exposed mechanical linkages. This hermetically sealed design prevents liquid ingress and electrical arcing, ensuring a much longer operational lifespan in industrial settings.

Yes, custom-engineered float probes can be built with multiple internal switches at different heights to monitor several levels simultaneously, such as low-level, high-level, and overfill. This allows a single entry point into the tank to provide comprehensive pump control and safety monitoring.