Lwastewater and float switches economicalimescale build-up is an incredibly common occurrence, happening when any hard water is stored in an environment. This often can create a problem when you need to have accurate fluid level measurements, and the build-up may even threaten the integrity of the liquid levels being reported.

Material Build-up & Sensor Problems 

Limescale build-up can be a particular pain for liquid level sensors in hot water applications. Over time build-up can cause issues for nearly all sensor types, be it float switches, optical, ultrasonic, conductive, and capacitance sensors. The problem is that material build-up can lay on moving parts or sensing tips/surfaces and cause false sensing. Replacement of level sensors can get expensive with new sensor cost, machine downtime, and service labor costs. The other problem is that fluids that are viscous or even a vessel that has debris inside of it can also lead to problems when trying to get accurate sensor readings.

A Quality, Low-Cost Solution For Liquid Level Sensing

We have created a solution to this dilemma with a sensor that has a pivot point to create space between the fluid and the sensor arm. SMD Fluid Controls designed the FH16 float switches to be used within these environments.

The FH16’s large, polished stainless steel ball float is the only part of the device that comes into contact with the fluid. This hinged float, therefore, operates much lower than the mount/ pivot point. This means no build-up of material deposited on the devices moving parts or the pivot point.  Our FH16 float switch also helps in viscous/sticky fluid applications or where there is sediment on the liquid surface to ensure an accurate read can still be achieved.

We offer the device for low-level and high-level normally closed/normally open options. Originally designed for the horizontal mount, it also functions well if mounted from above. 

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