Fluid Switch Blog


How Level Sensors Are Used for Food Processing

Level sensors play an integral role in many industries. From monitoring critical liquid levels, to ensuring safety, the applications are vast. In the food processing industry, the ability to prevent harmful contamination, spoiling, or machine malfunction, are just a few of the ways liquid level and float sensors are used.

As manufacturers work toward meeting stringent guidelines, the various sensors, switches and computerized systems used in food processing make it possible to get accurate information about the contents of their machines.

Here are some of the top ways level sensors are used to ensure the food we’re consuming is processed properly.

Product Quality

Food spoil, sanitation and other concerns like contamination are all a part of the food processing industry. To maintain high levels of product quality, it’s vital that exact measures of ingredients are used and that temperatures are maintained during the production process. Changes in these parameters could have an effect on the quality and safety of products. SMD Fluid Controls’ float switches are a great option for food processing because they are durable, resist corrosion and have high temperature capabilities.

float switchProduct Consistency

Trying to get something exactly the same every single time can be a daunting task. For manufacturers there is no other way. Maintaining consistent quality with every batch is critical to the bottom line and to maintaining customer loyalty. With level sensors, the food industry is able to monitor the contents of a tank or vessels for malfunctions or other factors contributing to inaccurate consistency.


In addition to strict sanitation rules from the government for food processing, the Food and Drug Administration also conducts inspections around how food and beverages undergo processing if they will be consumed by the public. This includes stringent inspections to verify the calibration and accuracy of any processing equipment the food must pass through. SMD Fluid Controls’ temperature switches are a great way to ensure liquids are adequately/consistently heated for applications like pasteurization, and more.

SMD Fluid Controls has locations in both the United States and the United Kingdom and designs and manufactures level sensors for a diverse range of industries. For more information about our offerings contact us.

growth chart

Liquid Level Sensing Market to Continue Strong Growth

Level sensing technologies play an important role across numerous applications. One function, the measure of liquids, is an especially critical element for medical appliances like dialysis machines as well as in HVAC, breweries and so much more. Their role in detecting and monitoring the exact levels or temperatures of a substance make it possible to keep accurate measure, meet regulatory requirements and make it possible for the latest automation and connected technologies to operate accurately.

Market Growth

A recent look at market projections from Research and Markets uncovers that the level sensor market will reach $5.32 billion by 2023. That’s a compound annual growth rate of 5.66 percent from 2017 to 2023.

The biggest growth in the market is estimated to occur thanks to increases in the Industrial Internet of Things space and Industry 4.0 which is the move to connect automation and computers in manufacturing for “smart factories.” Other markets like healthcare and end-user applications are also aiding in the increased growth of the market.

What’s Ahead

optical sensor

As sensors become smaller, less costly, and more sophisticated, we’ll also see growth happening in industries like automotive manufacturing, semiconductor and aerospace. Liquid level sensing in these markets is especially important for accurate fuel levels, water treatment, increasing safety and more.

Growth in APAC countries and expansion of IIoT technologies is also expected to increase the market for level sensors.

SMD Fluid Controls provides liquid level sensors including custom-designed sensors to meet specific needs. We offer competitive pricing for OEM designs and applications including machined level sensors, optical sensors, ultrasonic level measurement, and more.  Contact us today!

Liquid Level Sensors for Leachate Tanks from SMD Fluid Controls

a landfill

When rain falls over landfills, the water passes through the collected waste and becomes a hazardous liquid known as leachate. Left alone, this leachate will seep into the groundwater and contaminate nearby rivers, streams, and other bodies of water.

That’s why leachate diversion, storage, and treatment are required in much of the world. This process can be complicated, requires a network of hardware such as storage tanks and liquid level sensors. Level sensors for leachate storage tanks are used to monitor levels, detect leaks, and activate overflow alarms.

If you’re looking for liquid level sensors for leachate tanks or other wastewater treatment applications, SMD Fluid Controls has a number of standard and custom solutions. Read on or get in touch to learn more. Continue reading

The Role of Float Switches and Level Sensors in a World of Rising Sea Levels

A coastal town in Portugal

The Portuguese coastline, via Good Free Photos

Taking a look at the headlines, it’s hard to ignore the looming threat that rising sea levels pose to coastal communities around the globe.

According to the National Oceanic and Atmospheric Administration (NOAA), global sea levels are rising at an accelerating rate, and are expected to cause increases in destructive storm surges and nuisance flooding.

For example, a recently published study found that by as early as 2030, New York City could face devastating 8-foot floods as frequently as every 5 years.

As cities struggle to adapt to this new reality, environmental monitoring, ground water measurement, and flash flood detection will become more crucial than ever. It is toward those ends that float switches and liquid level sensors will become vital tools for the protection of life and property. Continue reading

Float Level Switches for Wastewater Environmental Safety

an illustration of effluent being discharged into a body of water with dead fish in it Municipal wastewater comes from a number of different sources: residential waste, industrial effluent, storm water, road runoff, and more. On their own or together—but especially together—these fluids can pose a serious risk to humans and the environment. That’s why wastewater treatment facilities have such strict protocols in place for safety and containment. The results could be catastrophic if they didn’t.

For one example of just how bad an impact wastewater can have on the environment, look to the recent case of the West Point Treatment Plant on Seattle’s Puget Sound. In February of 2017, the wastewater treatment facility experienced a power outage and float switch failure. This resulted in serious flooding and the discharge of wastewater into the sound—over 30 million gallons of wastewater, to be exact. Needless to say, the effects of this event on the environment have not been good. Continue reading

Float Switches for UL Hazardous Locations

a freeze frame of a drip of yellow liquid splashing

Across the world, employers are becoming more and more attuned to the demands of worker safety, especially in dangerous industries like oil and gas. This makes the work of safety certification companies like UL more important than ever.

Among many other crucial services, UL designates workplace environments as ordinary or “hazardous,” and enforces strict safety certification guidelines for relevant equipment and electronics accordingly.

As a leading manufacturer of float switches and liquid level sensors, SMD Fluid Controls offers a number of level sensors in compliance with UL Class 1, Div. 1 standards for hazardous locations. Potential applications for these units include:

If you’re looking for float switches for UL hazardous locations for any of these or other applications, get in touch with SMD Fluid Controls today or keep reading to learn more. Continue reading

Float Switches for UL Ordinary Locations

splashing water

UL, the famed safety certification company and Nationally Recognized Testing Laboratory, generally classifies industrial locations and workplaces into one of two designations: “hazardous location” and “ordinary location.” These designations help to determine the safety standards that different products must meet.

Float switches, among the devices covered by UL’s Standard for Industrial Control Equipment, are assessed based on a series of tests including immersion tests, dielectric voltage-withstand tests, tensile strength and ultimate elongation tests, and insulation resistance tests.

If you’re looking for float switches or liquid level sensors that comply with UL’s Standard for Industrial Control Equipment in ordinary locations, SMD Fluid Controls has a variety of standard and custom solutions. Potential applications include waste oil recycling and recovery, medical device manufacturing, and food and beverage processing. Continue reading

Combination Float Switches: Available Options from SMD Fluid Controls

a sequence of thermometers with rising temperatures imposed over a photo of dripping water

For many industrial applications, multiple sensor types are required—liquid level sensors, temperature sensors, pressure sensors, flow meters, or others.

These various requirements can be expensive and difficult to integrate. But with combination switches from SMD Fluid Controls, cost can be contained and assembly simplified. Continue reading

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