Fluid Switch Blog

Float Switches and Liquid Level Sensors for Aerospace Industries

gauges in an airplane cockpit

Float switches and liquid level sensors are crucial components in a number of industries, and aerospace is no exception.

Liquid level sensors for aerospace are used for a variety of applications, including the following:

If you’re in the aerospace industry and you’re looking for liquid level sensors for any of these or other applications, contact SMD Fluid Controls today. Continue reading

Urban Flash Flood Detection Systems Utilize Ultrasonic Level Sensors

people travelling along a flooded city street

The past month has seen some of the most devastating flooding in recent American history. With Houston and the Gulf Coast devastated by Hurricane Harvey and numerous Caribbean islands, Florida, and even southern portions of Alabama and Georgia flooded in the aftermath of Hurricane Irma, flooding is on the forefront of many Americans’ minds.

Flooding can be particularly harmful in urban areas and cities. This is not only because of their population density, but also because physical infrastructure that makes natural water runoff difficult or impossible.

That’s why flood detection systems are so important. Without early warnings, residents of cities and towns may not be able to evacuate and preserve property. So how can cities implement flood detection systems? Continue reading

Looking for an APCO TL008? Try SMD’s FM22 Instead. Here’s Why.

Have you been looking for an APCO TL008 combination float switch and temperature sensor? If so, you are not alone!

Unfortunately, APCO TL008 sensors can be difficult to find. The unit is largely listed as out of stock or unavailable online. This can be frustrating!

Luckily, SMD Fluid Controls offers a similar combination level/temperature sensor with their FM22 line of sensors.   Continue reading

The Disadvantages of Ultrasonic Liquid Level Sensors

black sound waves against a white background

When it comes to liquid level sensors, there are many different styles to choose from.

Standard float switches are probably the most popular and well-known options, but there are also more sophisticated units like hydrostatic pressure sensors, optical liquid level sensors, and more.

Ultrasonic liquid level sensors, which use pulses of ultrasonic sound to calculate liquid levels, are versatile and extremely reliable. But like any level sensing technology, they have pros and cons.

If you’re wondering if ultrasonic liquid level sensors are right for your application, take a look at some of their disadvantages below. If any are relevant to you, it’s probably best to try a different sensor technology. Continue reading

SMD Fluid Controls Named a “Key Vendor” in New Worldwide Market Report

a series of analytics In less than two years, SMD Fluid Controls has three times been named a major player in the global float switch marketplace.

Related Posts:

Most recently, Technavio’s report, Global Float Switch Market 2017-2021, named SMD Fluid Controls as one of the “key vendors in the global float switch market.” Continue reading

Continuous Liquid Level Sensors: Ultrasonic & Hydrostatic Pressure Sensors

In liquid level measurement, sensors can be thought of as having two general classes: point-level and continuous.

Point-level liquid level sensors detect the absence or presence of liquid at a certain point. Overflow alarms and low-level alarms to detect leaks are examples of applications that use point-level sensors.

But for applications where precise liquid levels need to be known at any given point, especially when they fluctuate frequently, continuous liquid level sensors are required. Fuel level sensors are an example of a continuous level sensor.

If you’re looking for continuous liquid level sensors for any industrial application, SMD Fluid Controls has a number of options.

Get in touch with SMD Fluid Controls or keep reading to learn more. Continue reading

Non-Contact Liquid Level Sensors from SMD Fluid Controls

Diagram of How an Ultrasonic Liquid Level Sensor WorksMost liquid level sensors such as traditional float switches need to be immersed at one point or another in the liquid medium being measured. With applications involving liquids like water, this is not an issue.

But what about applications involving more difficult materials?

When sensors are required to measure tank levels for difficult liquids such as acids, gasoline, wastewater, manufacturing slurries, and others, prolonged exposure may result in unacceptable damage.

This is when non-contact liquid level sensors are needed. Continue reading

Liquid Level Sensors with No Moving Parts

the surface of water

For many people, “liquid level sensor” is synonymous with “float switch.”

Traditional float switches work thanks to a magnetic reed, breaking or connecting an electrical circuit when liquid levels reach a specified point via a specialized float.

For most applications where liquid levels need to be measured within a tank or other vessel, float switches work perfectly, especially considering the variety of custom options—mounting position, chemical compatibility, and more. Continue reading

Float Switches for Effluent Pumps & Ejector Pumps

The surface of a dark pool of water, photographed from above.For many of us in the modern world, waste is something we flush and forget. We don’t need to know where it goes, or how to gets there. But for people who live with septic tanks or holding tanks instead of modern sewage systems know better.

Septic tanks in homes and holding tanks on boats are relatively simple. Waste comes in from an intake or inlet and separates into three layers. Sludge sits at the bottom, clarified water in the middle, and oily “scum” on top. Water is discharged and solids break down thanks to special bacteria.

Without properly functioning pumps, this discharge could fail, leading to backups, overflows, or other issues.

If you have a septic tank or holding tank, it’s imperative that you keep your discharge, effluent, and ejector pumps working in top order. That means buying the best hardware upfront when installing a new system, and maintaining and replacing the old one when needed.

SMD Fluid Controls is a leader in float switches and liquid level sensors of all varieties and applications, including sewage pumps and septic tanks. Whether you need a single float for a home system or multiple custom units and OEM design service, SMD can help. Continue reading

Float Switches for Well Pumps

An old green water pump attached to a well.

Wells have been an important part of human infrastructure for thousands of years. Water is essential for everyday life, and wells make it possible to rely on a clean, ready source of fresh drinking water right beneath one’s feet.

While primitive wells rely on buckets and rope or other relatively simple machine to retrieve water from the bottom, more sophisticated ones use electronic pumps.

Electronic well pumps use a variety of components to retrieve water from the bottom of the well. One of the most important in many pump systems is the float switch or other liquid level sensor. Continue reading