News & Updates


With a float switch, you have a device that is designed to detect the level of liquid in a tank. There are several different types of float switches and they can be used for various purposes. Commonly, they are used for reading the level of liquid in a tank and ... Read More
May 6, 2016fpisensors


A level measuring system is typically used in a closed environment of some kind: a chemical processing vat, an HVAC system, an automatic lubrication system. These tasks all present unique challenges to measurement, and FPI has plenty of experience in handling them. But one job we haven’t yet had the ... Read More
December 24, 2012fpisensors


A master electrician from down under has created a video that shows what can be found inside a heavy duty float switch. Raymond of New Zealand takes an angle grinder to a sturdy float switch to see what makes it tick. For this general purpose model, it’s simply a counterweight ... Read More
December 12, 2012fpisensors


An important question to ask when making custom liquid level sensors is how: How to make the most accurate, durable, and affordable sensor for a given application. To answer that question, we must also ask what: What are the properties of the material that needs to be monitored? Soon, there may ... Read More
December 10, 2012fpisensors


A recent discussion at, an online community for automation professionals, was started by an instrument engineer who asked for advice on choosing between software-based level transmitters or mechanically triggered level switches. The engineer, a Mr. Hasseli, wanted to determine the best solution for producing a reliable level signal. At first, ... Read More
December 3, 2012fpisensors


Liquid level sensors aren’t all about cold technology and engineering. There are some applications for liquid sensing that are more personal, that confront sensitive problems for individual people. Recently, a new solution has been developed to combat the effects of incontinence for those suffering with the stigmatizing condition. It is a ... Read More
November 26, 2012fpisensors


Here at FPI, we generally work with liquid level sensors, which are distinct from fluid level sensors. The difference is that the category of fluids also includes gases, a rather more complicated material to measure. But a team of MIT chemists has found an incredibly cheap and simple way to ... Read More
November 19, 2012fpisensors


The tsunami that hit the shores of Japan last year was a tragic event, and that tragedy was compounded by the damage it caused to the now-infamous Fukushima Daiichi Nuclear Power Plant. One of the factors that complicated recovery efforts was an inability to measure the level of water being ... Read More
November 12, 2012fpisensors


Today’s Float Switch Hero comes to us from Koi Talk, the online forums of England’s Koi magazine. There you’ll find the UK’s most dedicated enthusiasts of keeping and caring for the graceful fish and their pond habitats that are the central feature of Asian-inspired gardens. You’ll also find “Anthony,” a senior ... Read More
November 5, 2012fpisensors


“Float Switch Heroes” is a new feature here at FPI where we’ll share stories of fantastic float switches and liquid level sensors from around the world. We’ll look for these humble, hard-working devices wherever they’re found, from unexpected applications to harsh environments to unorthodox designs – whatever catches our eye. This ... Read More
October 29, 2012fpisensors