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This section provides an overview for level switches as well as their applications and principles. Also, please take a look at the list of 104 level switch manufacturers and their company rankings. Here are the top-ranked level switch companies as of December, 2024: 1.Barksdale, 2.Whitman Controls, 3.FPI Sensors.
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A level switch is a type of sensor used to detect the remaining amount of a substance, such as liquid or powder.
It is indispensable for inventory control and maintenance operation of product tanks. There are many types, from simple to highly precise.
Level switches are primarily used in material storage facilities. These include tanks for storing liquids such as tap water and chemicals, and service hoppers for dropping powder materials.
Tanks also come in a variety of shapes, sizes, and installation methods, so the appropriate level switches are used depending on the orientation and situation in which it is installed. The purpose of installation can be classified into cases where the switch is installed simply to detect and report the remaining amount in the tank, and cases where the switch provides some kind of feedback control to other equipment when a certain threshold value is crossed.
Level switches can be broadly classified into two types: the "float type" that detects liquids, and the "sound type" that detects powders and other substances.
Float-type level switches, which are often used to detect liquids, are level switches with a float attached and are mechanically controlled. When the float is not in contact with the liquid, the float is tilted and the internal circuit on the opposite side of the float is disconnected. On the other hand, when the float is pushed up by the liquid, the circuit on the opposite side makes contact and conducts the circuit, thus detecting a transition. However, the float type can only detect liquid.
Sound level switches are used to detect powders. A sound level that constantly vibrates at a certain frequency is prepared, and when a powder or other object comes into contact with the level switches, a different frequency from that in the air is detected. The change in frequency is used to determine the position of the powder.
The level switches to be selected depend on whether the substance to be detected is a liquid or a solid, such as powder. For simple applications, such as detecting the remaining amount of liquid, a float switch would be suitable. For chemicals, it is important to check for chemical resistance.
For solids, sound level switches are suitable, but depending on the particle size or size, there may be problems such as getting caught at the sound level. There are also level switches that use other principles, such as electrode-type switches, so it is a good idea to consult with the manufacturer.
Electrode-type level switches consist of an amplifier, which is a power supply unit that applies a very low voltage between the electrodes, and a pole-holding device. The amplifier contacts often have hysteresis, shorting the contacts from the time the high electrode touches the surface of the liquid until the low electrode breaks the level.
The holding fixture is made of resin or other insulating material to insulate the electrodes from the surrounding fittings. The electrodes generally consist of three electrodes: a common electrode, a high-level electrode, and a low-level electrode. Two electrodes may be used for alarm purposes.
Float-type level switches cannot be used in tanks with agitators, whereas electrode-type switches can be used stably. However, they cannot be used with nonconductive liquids (e.g., oil).
Also, depending on the type of liquid, the electrode may dissolve due to corrosion, etc. Therefore, the electrode material must be carefully selected. In general, SUS304 or SUS316L is often used for the detection of less corrosive liquids. For highly corrosive liquids, Hastelloy or titanium are used, but they are more expensive.
Capacitive level switches are level switches that can be used with powders and liquids. In principle, a grounded electrode and an electrode for detection are insulated and arranged, and the switch operates by detecting changes in capacitance between the electrodes when they come in contact with liquid. Since detection is based on capacitance, the level detection of insulating materials is also possible.
The shape is a single cylinder, which is attached to the side of a chemical tank or hopper. The disadvantage is that since it detects by contacting the object to be measured, there is a risk of false detection due to corrosion or sticking.
*Including some distributors, etc.
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Standex Electronics is a worldwide market leader in the design, development and manufacture of standard reed switch-based sensor solutions and custom electro-magnetic components, including magnetics products. Their company history dating back to 1969, Standex has provided their service to a high customer base globally for more than 50 years. The company has high-quality standards, work by the approach of "partner, solve, deliver", focus on a customer driven innovation and commitment to absolute customer satisfaction. Their diverse capabilities and dynamic solutions allow them the ability to achieve the highest quality levels of efficiency and productivity. Sustainability is a high focus of the Standex product line, with long-term sustainability improvements continuing to drive consistent technological growth. Green switching applications are a growing demand for their customers, and they ensure to deliver.
FPI Sensors are float-level switch and liquid-level sensor manufacturers and are renowned for delivering top-tier OEM products at competitive prices. The supplier has established a unique "Micro Factory" structure that drives customer service and manufacturing precision. The dedicated teams, responsible for individual customers, nurture intimate knowledge of preferences to ensure personalized liquid-level sensor solutions. This structure fosters meticulous workmanship, customer satisfaction, and the fulfillment of specific requirements. Since 2007, FPI Sensors has been dedicated to providing the highest-quality liquid level switches and continuous output sensors, serving diverse industries from oil/water separators to medical equipment.
Whitman Controls is a UK-based manufacturer and supplier specializing in miniature pressure, vacuum, temperature, and liquid level switches and sensors. The company’s product portfolio includes pressure switches, pressure transmitters, vacuum switches temperature sensors, and more. Their sensors can be tailored to specific applications, media environments, and more, to meet specific customer requirements. The company’s products serve various industries, including OEM manufacturing, oil & gas, HVAC, food and beverage, among others.Holding ISO 9001 certification, the company offers products tailored to meet exact specifications and performance expectations.
ifm efector (ifm) is a subsidiary of ifm electronic, founded in Germany in 1969. ifm has developed, manufactured and marketed sensors and controls technology to industries that include assembly and robotics, automotive, material handling, metal forming, mobile equipment, plastics, and food and beverage. Ifm produces sensors, condition monitoring equipment, image processing, safety technology, industrial communication, IO-link, systems for mobile machines, displays, software, connection technology, voltage supplies, as well as other accessories.
SSI Technologies LCC, established in 1974 with headquarters in the USA, is a manufacturer of electronic sensors. The company's display product line includes level gauges, digital level sensors, pressure sensors, liquid level sensors, and DEF/Urea sensing solutions. The company's products range from heavy truck weight sensing devices to liquid level sensors for barrels and tanks. It serves many industries, including the motorcycle, automotive, mass transit, and material handling markets, among many others.
Littlefuse was founded in 1927 and headquartered in the United States. Littlefuse is a diversified industrial technology manufacturing company with customers globally. Littlefuse has products segments which are electronic, industrial, and transportation. Electronic segment products include fuses and fuse accessories, positive temperature coefficient resettable fuses, polymer electrostatic discharge suppressors, and varistors. Transportation products include blade, resettable, and high-current and high-voltage fuses, as well as battery cable protectors; fuses, switches, relays, circuit breakers, and power distribution modules. The Industrial segment offerings include contactors, transformers, and temperature sensors for use in renewable energy and energy storage systems, electric vehicle infrastructure, HVAC systems.
Electro-Sensors, Inc. operates as a manufacturer of precision sensors and monitoring systems, established in 1968 and headquartered in Minnesota. The company specializes in providing products and services for industries such as industrial manufacturing, agriculture, and material handling.Its offerings include speed sensors, temperature sensors, and hazard monitoring systems. These products are used for precision monitoring and safety assurance, enhancing operational efficiency and safety measures in the industries it serves through its precision sensor and monitoring solutions.
Sierra Instruments, Inc. was established in 1973 and has its headquarters in California, United States. The company is a manufacturer of flow instruments for nearly every liquid, gas, and steam application, with locations in Europe and China. Sierra's range of flow instruments includes immersible thermal mass flow meters, vortex flow meters, and thermal mass flow controllers for various applications. The company's flow controllers have applications across global industries such as oil and gas, energy management, biotech, and aerospace.
Gems Sensors was founded in 1955 and is a global manufacturer and supplier of sensing and control solutions based in Plainville, United States. The company is a division of Fortive Corporation, a Fortune 500 company. Gems Sensors have designed and manufactured a broad portfolio of liquid level, flow, and pressure sensors, miniature solenoid valves, proximity switches, and integrated fluid management solutions, from agricultural equipment to medical devices. The company manufactures its products via fully equipped and ISO-certified facilities in North America, Europe, and Asia, shipping over 5 million sensors annually.
Walchem, Iwaki America, Inc., expanded and incorporated in 2013 with headquarters in the USA, is a manufacturer of online analytical instruments and electronic metering pumps used for wastewater systems in swimming pools and spas. The company's tangible product line includes treatment controllers to monitor and regulate various aspects of water treatment processes and water treatment sensors and accessories used to detect chemicals and impurities in water bodies. It also provides cloud-based software tools and instrumentation that integrate with its products. The company offers its know-how to assist clients with customized and full-scope chemical control systems.
Time Mark Corp., founded in 1972 and based in Tulsa, Oklahoma, is a manufacturer of special control devices and related accessories for various industrial applications. The company's product folio includes 3-phase monitors and testers, current monitors, liquid level controls, transformers, and, transducers that have a variety of uses in digital transmission, electronics gadgets, appliances, energy, and, electrical industries. The company also offers a 5-year warranty on 3-Phase Monitors and all other standard products have a 1-year warranty.
Barksdale, established in 1949 and headquartered in Reichelsheim, Germany, is a manufacturer of industrial control and regulator products. The comprehensive product line includes pressure, transducers, switches, temperature, level, and flow controls that offer precise monitoring, efficient regulation, and enhanced operational safety. These products find application in industries such as oil and gas, manufacturing, energy, and transportation. The company's accurate monitoring instruments optimize processes, guarantee operational efficiency, and maintain safety standards, all of which add to the smooth running of complex industrial systems.
Endress+Hauser Group Services AG, established in 1953 with headquarters in Reinach, Switzerland, is a global manufacturer, distributor, and integrator of industrial process solutions for flow, level, pressure, temperature, and digital communications. The company's product line includes portable pH meters, Raman spectroscopic analyzers, electromagnetic flowmeters, hydrostatic level sensors, and application managers (devices). These products are available individually, and custom-process manufacturing turnkey systems can be commissioned. The company serves industries including food processing, chemical processing, agriculture, mining, and energy.
Comus International, founded in Clifton, New Jersey in 1978 is a manufacturer of tilt switches, relays and proximity sensors. The company's product portfolio includes liquid-level pressure sensors and reed switches. smart sensors and custom products. Their products are used in markets such as Automotive and Transportation, Telecommunications, Industrial Automation, Healthcare and Medical Devices and Aerospace and Defense.The company also provides services including global distribution, product selection, customized services, technical support and customer service.
Pepperl+Fuchs, Inc. was founded in Mannheim, Germany in 1945 developing the forerunner of the proximity switch. Pepperl+Fuchs continues to develop proximity sensors as well as other industrial sensors including ultrasonic sensors, rotary encoders, positioning systems, display and signal processing, vibration monitoring, industrial communication, and signal processing as well as related accessories and software. Explosive protection products include safety barriers, surge protection, wireless solutions, HMI systems, power supplies, electrical explosion protection equipment, level measurement, and related software.
Thomas Products Ltd. is an American ISO 9001 certified manufacturer of flow and level sensors established in 1974 and based in Southington, Connecticut. The company produces a range of flow and level monitoring equipment including multi level sensors, flow or level switches, indicators, and pump controls. These are used to regulate the flow and levels of liquids or gasses as they pass through industrial systems. The company primarily serves clients in the water and wastewater treatment, pharmaceutical, power generation, and chemical processing industries.
OMEGA Engineering Inc., founded in Norwalk, CT, in 1962 is a manufacturer of products used to measure temperature and humidity, flow and level, and pressure. The company's product portfolio includes thermocouple probes and assemblies, pressure gauges and switches, and air velocity measurement systems, wireless systems and portable optic sensors. The company serves markets including Automotive and Electric Vehicles, Renewable Energy and Energy Storage and Electronics and IT Infrastructure. The company also offers customer services that include support, custom research projects and customized services.
Clark Solutions, established in 1962 and headquartered in Massachusetts, United States, is a supplier and distributor of fluid handling products. The company offers a wide range of products, including pumps, valves, and instruments, among others, serving industries such as chemical processing, pharmaceuticals, and food and beverage. These industries rely on the company's solutions for precise fluid control in tasks like transferring, mixing, and flow control, ensuring the accuracy and efficiency of operations.
Madison Company, Inc. founded in Branford, Connecticut, USA, in 1959, is a manufacturer of float switches and liquid level sensor solutions. The company manufactures products including reed switches, liquid-level switches, visual indicators, and hydrostatic pressure sensors. Its M6002 miniature PVC sensor is chemical-resistant and is used to deal with corrosive liquids. The company’s products are ISO-9001 certified and in 2009 it acquired FloodMaster which offers water leak detection solutions. GHM, Citec, and MEYLE are its distributors.
Fluid Components International, founded in San Marcos, CA, in 1964 is a manufacturer of thermal mass flow meters, flow switches and level switches for industrial process measurement applications. The company's product portfolio includes Flow Switch, Flow Conditioners, Gas Flow Meter, Level Measurement Products, and Flow Straighteners. The company serves markets including Medical and Healthcare, Aerospace and Defense, Consumer Goods, Industrial Manufacturing and Construction and Building. The company also provides services including national distribution, product selection, customized services, technical support and customer service.
Vertiv Group Corp. founded in Columbus, OH, in 2016 is a supplier of infrastructure technologies, hardware, software, analytics and ongoing services. The company's product portfolio includes Uninterruptible Power Supplies (UPS)DC Power SystemsPower DistributionStatic Transfer SwitchesSwitchgear and Switchboard. the company serves markets including Automotive and Electric Vehicles, Renewable Energy and Energy Storage and Electronics and IT Infrastructure. They operate in 130 countries and also provide services including product selection, installation, preventative maintenance, troubleshooting, and repair.
OPW ENGINEERED SYSTEMS CORPORATE was founded in 1892 and is based in Hamilton, Ohio, USA, is a supplier of fluid-handling solutions and systems for various industrial and commercial applications. The company provides clean energy solutions for the handling, transport, and storage of alternative energy, fluid transfer solutions for handling critical hazardous chemicals and dry goods, retail fueling solutions for conventional and alternative fuels, and, vehicle wash solutions. They also offer loading systems, rail & transport tank truck equipment, spill containers, overfill prevention devices, and swivels for the chemical, transportation, vehicle wash, and fuel handling sectors.
Flowline, Inc., based in Los Alamitos, California, is a supplier that specializes in providing industrial instrumentation solutions for level measurement and control. Its product range includes Reflective Ultrasonic Sensors, such as EchoPod and EchoTouch, designed for efficient performance in condensation-prone environments. The company also offer Radar Sensors for liquid level measurement and Guided Wave Sensors suitable for both liquid and solids level measurement. These solutions enable safe and efficient management of contained liquid and solid assets.
Intellisense Microelectronics Xiamen Ltd. is a manufacturer of various industrial sensors that was founded in 2010 in Fujian, China. The company produces sensors with a wide range of applications such as in automation, smart home operations, and industrial processes. Its products include liquid level sensors, photoelectric sensors for object detection, and CMOS integrated sensors that can be programmed for various applications. The company also offers product design as well as customization services for clients with unique projects. Its products are primarily used in industrial automation, healthcare, and defense R&D.
Siemens began in 1847 and is headquartered in Munich, Germany. Siemens focuses in automation and digitalization technology and operates globally. Siemens’s 5 operating segments are digital industries, smart infrastructure, mobility, Siemens Healthineers, and Siemens Financial Services. Siemens Financial Services provides debt and equity investment as well as financing solutions. Siemens Healthineers is a medical devices company that provides products and consulting. Mobility includes passenger and freight transportation. Smart infrastructure includes full solutions for electrification. Digital industries offer both software and hardware for industries and production efficiency.
elobau Elektrobauelemente GmbH & Co., founded in 1972 with headquarters in Germany, is a manufacturer of contactless sensor technology, operator controls, machine safety, and level measurement. The company's products include multi-axis joysticks, multi-function handles, push buttons, sensor components, and continuous level measurement. elobau’s products are used in both mobile (off-highway) and industrial applications. The company’s products can be found in aircraft, off-road vehicles, agricultural machinery, and industrial machinery. elobau Elektrobauelemente GmbH & Co. has been carbon neutral since 2010.
SONOTEC GmbH, established in 1991, is a German manufacturer based in Halle (Saale), Saxony-Anhalt, specializing in ultrasonic measurement technology solutions. The company offers non-invasive flow meters and air bubble detectors for fluid monitoring in medical technologies, bioprocessing, and the semiconductor industry. It also supplies ultrasonic testing devices used for condition monitoring, inspections, predictive maintenance, tightness testing, and ultrasonic leak detection. Additionally, the company engages in non-destructive testing (NDT) using ultrasound, primarily for flaw detection, thickness measurements, and weld seam testing, commonly applied in industries like aerospace, aviation, power plants, as well as other sectors including pipelines, railways, and sheet metal inspections.
SensorsONE Ltd., founded in the UK, in 2006 is a manufacturer of measurement instruments and sensors. The company’s product portfolio includes temperature sensors, pressure sensors, proximity sensors that detect the presence or absence of objects without direct contact, level sensors that enable precise monitoring of liquid levels in tanks and containers and motion sensors that detect movement and acceleration. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation.
Micro Sensor is a Baoji, Shaanxi, China-based manufacturer of OEM, ODM, and custom-designed transmitters, flowmeters, and sensors used for industrial automation, established in 1993. The production line has level, temperature, and pressure transmitters, pressure sensors, flowmeters, and accessories, including valves, indicators, protectors, and connection boxes for pressure sensors and transmitters used in the HVAC, marine, water, oil, and gas industries. The company has a subsidiary, Micro Sensor GmbH, based in Essen, German.
MAKE CO. LTD. has been a manufacturer of level meters and switches since 1995, headquartered in Osaka, Japan. The company manufactures various instruments and products, including bubble surface sensors, interface meters, emulsification sensors, charge detectors, and more. These products feature different explosion-proof specifications, ensuring safety in potentially hazardous environments. Additionally, the company can accommodate custom orders that have unique requirements when it comes to level measurement and control, tailored to meet the precise needs of its customers. The company's products find applications across multiple industries, including those with stringent safety requirements and challenging operational conditions.
Val.Co Srl is based in Milan, Italy, and is a manufacturer of process control and measurement instruments that was established in 1982 before becoming a member of Germany’s GHM Group of companies. The company primarily produces instruments for monitoring pressure, flow, level, and temperature. These include flow meters and switches, level transmitters, float level switches, and pressure transmitters. Aside from its products, the company also offers installation, maintenance, calibration, and repair services for its clients in the industrial sector.
DropsA S.p.A., headquartered in Milan, Italy, has been a centralized lubrication system manufacturer since 1946. The company offers a range of products, including automatic and manual pumps, dual-line and progressive dividers, control devices, and auxiliary components. These products are designed for various types of lubrication, such as grease, oil, and air/oil, aimed at improving the efficiency of various industrial production systems while reducing maintenance costs. These are utilized across diverse industries, including mining, construction, railways, textiles, and energy.
The Azbil Corporation (formerly the Yamatak Corporation) aims to realize safety, comfort, and fulfillment in people's lives and contribute to global environmental preservation through "human-centered" automation. They provide their customers with timely solutions via an integrated structure that extends from planning and development to maintenance and service, capable of responding rapidly to customer needs.
Fiama, established in 1913 and headquartered in Parma, Italy, is a manufacturer of the market mechanical, electrical, electro-mechanical measurement and control instrumentation. The company offers a range of products, including measurement, control instrumentation, and position indicators. It also provides handwheel indicators, rotary encoders, and more. Its product is suitable for reducing speed and increasing torque. Moreover, the company has achieved UNI EN ISO 9001 certification. Its products are mainly intended for manufacturing machinery for the food, packaging, wood, glass, and ceramic industries.
4B GROUP is a manufacturer of bucket elevator and conveyor parts and components that was originally established in 1888 in Leeds, United Kingdom. The company offers elevator belts with pre-measured loops for elevator buckets, elevator bolt fasteners designed to be adjustable and reusable, and sprockets for meshing with chain or track to transmit rotary motion. It also offers related safety equipment such as hazard monitors, alignment sensors, and control units. The company’s products are used mainly by clients in the food processing, mining, and recycling industries.
AECO SRL, founded in 1978 and headquartered in Milano, Italy, is a manufacturer of sensor solutions for industrial automation. The company offers a range of products, including inductive sensors, capacitive sensors, and level control sensors. These sensors are used in a wide range of industrial applications, such as process controls, machine tools, and assembly lines, to detect objects and control levels of materials without physical contact. It holds several certifications such as the ISO 9001:2015 from CSQ, and the ATEX - Production Quality Assurance Notification certificate.
Danfoss, established in 1933 and headquartered in Nordborg, Denmark, is a manufacturer specializing in Climate Solutions, Drives, and Power Solutions. The company's solutions find applications in various sectors such as refrigeration, heating, and both off- and on-highway equipment. It also offers solutions for renewable energy sources like solar and wind power, alongside district-energy infrastructure for urban areas. Its digital displacement pump received both the Powertrain Product of the Year and Achievement of the Year in the 2022 Diesel Progress Summit Awards.
Henry Group Industries, established in 1914 and based in Harbour City, Tsim Sha Tsui, Hongkong is a manufacturer of components for the commercial refrigeration and air conditioning industry. The company is international, with operations in Australia, China, Germany, the United Kingdom, and the United States. The company's products include automatic controls, fan motors, filters and dryers, heat exchangers, and safety devices. Its pressure vessels meet CE, UL/ASME, AS1210, and TSG codes. The goods of the company are fully compliant with ISO 5149 certification. Each component has a unique QR code for identification.
WAM Japan was established in 2005 and, based in Japan, is a manufacturer of power-handling equipment. The company produces products such as screw conveyor feeders, rotary valves, farming and biogas equipment, energy-related equipment, and mechanical conveyor. All its products are used in different applications, including wastewater treatment plants, livestock farming, sewage, renewable energy, and recycling sites. The laboratory has equipment and accessories to perform mixing, feeding, and metering tests with different materials. WAMGROUP’s Corporate R&D department supervises the test facility of the company.
BACCARA, established in 1964 and headquartered in Israel, is a manufacturer of precise flow control solutions and components for integrated automation systems. Under its two brands—GEM-SOL for industrial applications and GEM-FLOW for agriculture—the company produces solenoid valves, air valves, and irrigation controllers. It also offers custom aluminum structures, control panels, and pneumatic systems. Its products excel in diverse environments, including heavy industries and agriculture. The company's solutions are used in medical, renewable energy, and various agricultural applications such as field irrigation, poultry, and dairy farming.
SHENZHEN SOWAY TECH. CO., LTD was established in 2002 and is located in Guangdong, China is a manufacturer of sensors for various industries. The company offers a diverse product catalog, including the SDM40S explosion-proof magnetostrictive displacement sensor, SP119 Soway aluminum magnetic proximity sensor for doors, and SFM20T dual floater magnetostrictive liquid level sensor. These products have applications, such as providing feedback on the roll gap position in continuous casting using the magnetostrictive displacement sensor, facilitating non-standard inspection fixtures, and supporting intelligent manufacturing processes.
Sensotec, founded in 1985, is a manufacturer and application service supplier of sensors and transmitters specializing in pressure, level, and force measurements in Cornella de Llobregat, Barcelona. Sensotec offers pressure, level, and force transmitters. Its products cater to various industries and OEM manufacturers, providing sensors, transducers, and transmitters with output signals compatible with diverse measurement equipment. The company owns four brands: Lexitron, Leveltec, Nivomat, and Sensotec. The company serves customers from Africa, Asia, America, Europe, and Oceania.
Nivelco Process Control Co. is a manufacturer of industrial measurement and control instruments founded in 1982 and based in Budapest, Hungary. The company produces instrumentation and equipment with applications in automated processes. Its products include flow or temperature measurement equipment, pressure sensors for controlling fluids or gasses, and analytical transmitters that analyze dissolved oxygen or pH levels in liquids. It also offers controllers and wireless modules for communication with monitoring consoles, as well as calibration services for customers with unique project specifications. The company's products are primarily used in the wastewater treatment, petrochemical, and pharmaceutical sectors.
Meba Electric Co.,Ltd is a Chinese manufacturer of low-voltage electrical equipment that was established in Yueqing City, Zhejiang Province in 2006. The company produces various relays such as electronic and thermal overload relays, circuit breakers, AC contactors, and AC drivers. It also offers human machine interfaces (HMIs) such as MT4000/6000/8000 series touch panels, as well as programmable logic controller (PLC) and expansion modules. The company’s products are used mainly by clients in the construction, aerospace, energy, and petrochemical industries.
Gave has been a manufacturer of Switchgear since 1944, based in Spain. The company provides various switches that include Cam switches, Changeover, and switch-disconnectors, Motorized changeover and automatic transfer switches, Control relays, and protection equipment. These products have applications for outdoor use, hygienic environments, offshore and fire-resistant installations, and pump station controls along with relays used to supply the needs of liquid management and control. They are extensively used in numerous industries like Agriculture, Construction, Electrical, and more.
PCI Instruments is a manufacturer of process instrumentation and diaphragm seals that is headquartered in Southport, England and was established in 2000. The company has a product catalog that includes pressure gauges, temperature gauges, diaphragm, seals, pressure transmitters, and resistance thermometers. Pharmaceutical, food processing, dairy, chemical, petrochemical, and nuclear industries are the main consumers of the products manufactured by the company. Its pressure gauges offer hygienic gauges for all stainless steel industrial applications along with he product catalog based on pressure, temperature, and level.
Endress+Hauser Group is based in Switzerland and has over 15,000 employees worldwide. Endress+Hauser manufactures measurement instrumentation and provides services for industrial process engineering. Endress+Hauser’s customers come from various industries including chemical, life sciences, energy, and water. Endress+Hauser’s products include those for level measurement, pressure measurement, software, industrial communication technologies, and liquid analysis. Endress+Hauser also offers services including project and commissioning, support and education, maintenance, and performance optimization. The company has an assortment of online tools to assist customers in services such as product selection.
Shenzhen Jiwei Automations Ltd., founded in 2013 and based in Shenzhen, China, is a manufacturer of level switches and level meters. The company specializes in manufacturing level measurement instruments, such as vibrating level switch, magnetic level indicator and radar level meter. These products find application in environmental protection, building materials and chemical industry. The company has acquired multiple quality standard certifications including ISO and CE, and has many registered patents for products and softwares.
Introtek International, established in 1981 and headquartered in New York, New York, United States, is a manufacturer of medical sensors. The company's products include air bubble detectors, drip chamber level sensors, and IntroPro occlusion detectors. These products are used in the manufacture of medical equipment and other sensitive equipment used in aerospace. It offers solutions for non-invasive ultrasonic sensors, from air bubble detection to contactless monitoring of liquid levels. It primarily works with original equipment manufacturers to provide custom solutions that are cost-effective for volume production.
Georg Fischer Piping Systems Pvt. Ltd is headquartered in Mumbai, India, and is an ISO 9001-certified manufacturer of plastic as well as metal piping systems that was established in 2007 as a subsidiary of Georg Fischer AG. The company produces piping system components and complete systems for industrial or automation operations. These products include pipes, valves, and fittings made from polyethylene (PE) or polypropylene (PP). It offers automation system components including actuators, sensors, and multi-parameter controllers. The company also offers additional services, such as custom engineering, prefabrication, and installation.
SST Sensing Ltd is an ISO 9001-certified manufacturer and supplier of oxygen and liquid level sensors established in 2002 in Coatbridge, Scotland, UK. The company specializes in products for detecting the presence, levels, and absence of liquids or gasses, including hazardous area-approved liquid level switches, carbon dioxide sensors, and optical liquid level switches. The company also offers customization, calibration, and repair services. It mainly serves clients in the aviation, transportation, and industrial processing sectors.
Arjay Engineering, founded in 1983 and headquartered in Oakville, Ontario, Canada, is a company specialialist designer and manufacturer of capacitance controls for level, interface, and spill monitoring. The company's products include PPM oil in water analyzers, oil water separator monitors, and a remote monitoring system. These products are usually offered as complete systems and deployed in various plants, including chemical processing, steel processing, and commercial buildings. It also offers custom control panels to meet specific client requirements. Its clients include Dr. Pepper, United States Steel, and Purdue University.
Bürkert Fluid Control Systems, founded in 1946 and headquartered in Ingelfingen, Germany, is a manufacturer of liquid and gas measurement and control systems. Its product range includes solenoid valves for fluid power systems, process and control valves for managing flow, pressure, and temperature, pneumatics and process interfaces for automation control, sensors, transmitters, and controllers for measuring physical and chemical parameters, and MicroFluidics solutions for precise fluid control. Its products serve diverse industries like breweries, labs, medical, and aerospace.
Automation Products, Inc. - Dynatrol Division, founded in 1956 and located in Houston, Texas, is a manufacturer of process measurement control, systems, switches, and equipment. The company’s products include density systems, solid-level switches, viscosity systems, liquid-level switches, and interface-level detectors. The products are used in wood processing, textile, bulk solids measurement, food processing, and beverage industries. The company manufactures products based on a vibration principle featuring online systems and level-indicating instruments.
Qualitrol Company LLC is based in Fairport, New York, USA, and is a manufacturer of monitoring products for electrical products that was established in 1945 before its acquisition by the Fortive Corporation in 2016. The company’s products include monitor systems and sensors for analyzing physical parameters such as vibration, moisture, or partial discharges. It also offers software for its portfolio products for monitoring trends, diagnosing device health, or optimizing performance. The company’s products are commonly used in industrial automation, with additional application in the power distribution and government sectors.
KTR Systems GmbH, established in 1959, is a manufacturer headquartered in Rheine, Germany, specializing in industrial drive technology. The company offers a range of mechanical components for drive technology, including couplings and torque limiters, designed to enhance energy efficiency and power density. In 2014, KTR Brake Systems GmbH was established as a subsidiary, offering hydraulic brake systems known as KTR-STOP and electromechanical brake systems called EMB-STOP. Additionally, KTR Systems develops hydraulic components and provides cooling systems for stationary hydraulics and mobile machines. The company's products are utilized in various industries, including the wind power, agriculture, machine tools, and automation sectors.
BinMaster is based in Lincoln, Nebraska, USA, and is a manufacturer of inventory management systems and level indicators that was established in 1965 as a brand line of Garner Industries. The company produces continuous and point level indicators, organizational software, and wireless communication devices. These include RL acoustic sensors that measure and map material volume, software for monitoring facility-wide level sensors, and vibrating rod switches for low or high level detection. The company mainly serves clients in the mining, energy production, and pharmaceutical industries.
Ditech, Ltd. is a manufacturer of sensors and detectors for industrial applications that was established in Osaka, Japan, in 1975. The company produces liquid transmitters such as turbine flow meters and vibrating viscometers, and liquid detectors such as dissolved oxygen meters and portable moisture detectors. It also offers various level transmitters and switches, including conductive, capacitive, and ultrasonic model types. The company’s products are primarily used by clients in the food and beverage, petrochemical, and environmental industries.
Barksdale GmbH is based in Los Angeles, California, and is a manufacturer of industrial engineering products that was established in 1949 before its acquisition by Crane Co. The company’s specialized product lineup includes various pressure transducers, switches, and transmitters for managing power and signals between circuits. It also offers temperature, flow, and level switches and transmitters for process control applications. The company is certified to ISO 9001 and ISO 14001 standards, and chiefly serves clients in the oil and gas, power generation, and chemical processing industries.
Monitor Technologies LLC was founded by George Gruber in Port Sanilac, Michigan in 1958. The ISO 9001-certified company is a manufacturer of indicators and control equipment for industries including plastic processing, cement & aggregates, feed processing, grain processing, and food processing. The company sells domestically and internationally through authorized representatives. The company’s products include point level indicators & controls, dust leak indicators & particulate emission trend monitors, inventory management software, and various flow measurement devices.
Tarnos is a manufacturer of water screening systems and vibratory equipment that was established in 1955 in San Fernando de Henares, Madrid, Spain. The company offers sieves for classification and separation processes, and electromechanical and electromagnetic feeders for material handling applications. It also offers mold shakers for loosening materials, bin activators for refuse discharge, and conveyors for elevated receptacles. The company’s products are used in heavy-duty industries, such as those working with ferroalloys, quarries, and aggregates.
EMITTER Electronics is a manufacturer of various electronic instruments and controls founded in 1990 and based in Maribor, Slovenia. The company's product portfolio includes a wide range of products for specialty vehicles such as keypad modules with intercom functionality, pump controls, pressure gauges, and digital siren amplifiers, as well as telemetry systems. These can be integrated into existing systems or customized to customer specifications for unique projects. The company's products are mainly used for agricultural machinery, firefighting or emergency vehicles, and municipal maintenance equipment.
Rototherm Group, established in 1847 and headquartered in Port Talbot, England, is a manufacturer and supplier of measuring and control instruments. The company's product portfolio includes mechanical chart recorders, filled-system thermometers, and flow regulators. These products are used in various industries, including power generation, transportation, and the oil and gas industry. The company provides services including training, repair, and calibration, and some of the company's brands include RTD Products, Canongate Technology, and Micronics.
Emco Controls A/S, established in 1966 and headquartered near Copenhagen, Denmark, is a differential pressure flow element designer and manufacturer. The company offers various gas, liquid, and steam measurement instruments, liquid level switches, and a line of thermowells. It also produces restriction plates and multistage pressure-reducing units. These products are used in industrial automation, chemical processing, and mining control systems. The company also offers custom mechanical instrument and process control equipment development and production, supplied with full documentation according to the client's industry standards.
Tacmina USA, established in November 1956 and based in Osaka, Japan, is a manufacturer and distributor of precision pumps. The company's product range includes Smoothflow Pumps, Motor-Driven Metering Pumps, Solenoid-Driven Metering Pumps, Chemical Injection Systems, and Chemical Tanks. These products are essential for accurate and pulse-free fluid transfer in various applications. Serving industries such as batteries and electronics, chemical and biochemical, pharmaceuticals and cosmetics, and water treatments, the company provides expert consultations, product customization, maintenance support, and swift customer assistance.
Elmess-Thermosystemtechnik GmbH & Co. KG is a German manufacturer of heating as well as monitoring products founded in 1975 and headquartered in Uelzen, Saxony. The company produces various heating and environmental control products including ASME electric immersion heater (EIH) element support plates, temperature monitoring and control devices, and air blower heaters. It also offers commissioning and repair services for customers requiring additional support. The company’s products are mainly used by clients in Germany’s oil and gas, steel, and pharmaceutical industries.
Dimaco SAS, established in 2011 and headquartered in Gela, Sicily, Italy, is an engineering company and is a manufacturer of pneumatic pumps and custom industrial machinery and manual equipment. The company primary operates in the industrial machinery sector and with automatic plants. It specializes in the design, development, and production of automated and semi-automatic machines, as well as electrical, pneumatic, and hydraulic panels with PLCs for third parties. The company's engineering services include feasibility studies for product development and follow-through production, assembly, and testing.
Tokyo Keiso Co., LTD. is a Tokyo-based flow & measuring instruments manufacturer established in 1954. The company provides various types of flowmeters and controllers, as well as level gauges and switches used with gas, liquid and solid materials. The company offers custom-designed products, as well as long-term support in the form of maintenance, calibration, and repair. Tokyo Keiso Co., LTD. products have applications in food and beverage production, drug manufacturing, and chemical storage. Their clients include Mitsubishi Chemical Corporation, Takeda Pharmaceutical, Japan Atomic Power Company, and Honda Motor Co., Ltd.
LUBE Corporation, established in 1964 and based in Chiyodaku, Tokyo, Japan, is a manufacturer and supplier of lubrication equipment. The company's product range includes World standard LHL system grease lubrication system, Battery drive grease kit, Main pipe decompression system, Progress method, and Multi-Port Centralized Lubrication System. These products ensure optimal lubrication and protection for machinery. It serves industries such as manufacturing, automation, machinery design, and environmental safety. The company also offers services in development, manufacturing, sales, and after-sales service for its range of equipment.
Kansai Automation Co., Ltd., a manufacturer of level controllers for powder, granules, and liquid was founded in 1969 and headquartered in Osaka, Japan. The company specializes in manufacturing products with level sensor technology, and their products include level switches, level indicators, flow sensors, conveyor peripherals, and flow meters. These products are used for precise level measurement, control, and monitoring. These solutions optimize liquid level control and process performance in water treatment, oil and gas, chemicals, food and beverage, and pharmaceutical industries.
Fischer Measurement Technologies, established in 1948 in Sindelfingen, Germany, is a developer, manufacturer, and supplier of precision measurement solutions. The company’s product encompasses thickness gauges, coating measurement tools, material testing equipment, and eddy current testing solutions, serving industries like automotive, aerospace, and electronics. The company emphasizes creativity, reflected in its precise and convenient measurement devices. Fischer's ISO certifications validate their priority to quality. Besides, Fischer’s tailored solutions and expertise assure customer satisfaction. The company, therefore, stands as an ideal partner for industries seeking precise measurement tools that enhance efficiency and uphold quality standards.
FAFNIR GmbH, established in 1965, is a manufacturer and distributor based in Hamburg, Germany, specializing in industrial sensors and measurement technology. They offer a wide range of products such as continuous level sensors, e-OPS Overfill Prevention (GWG), FAFNIR accessories, VPS pressure sensors, and thermal sensors. These high-precision instruments find applications in various industries including automotive, pharmaceuticals, oil and gas, and food processing. FAFNIR GmbH is ISO 9001 and ISO 14001 certified.
KOBOLD Messring GmbH, established in 1980 and based in Maharashtra, India, is a manufacturer and supplier of industrial measuring and control devices. The company is specialised in monitoring, measuring, and regulating the physical quantities of flow through, pressure, level, and temperature. It is certified through the M-Zert certification DIN EN ISO 9001 for its management system. The company provides a number of temperature sensors and temperature measurement tools that make it easy to determine the precise temperature. The company's hand tools and pH measuring equipment have earned positive reviews because of the accurate measurement outcomes.
Fox S.r.l. is an Italian manufacturer and distributor of industrial fans and ventilation systems that was established in Bologna in 1977. The company’s product lineup includes positive displacement and dynamic blowers, as well as centrifugal, axial, and mixed flow industrial fans. It also offers ventilation systems for filtration, cooling, and air treatment. The company’s products are commonly used in industrial manufacturing and processing facilities, as well as in the food and beverage industry. It is certified to ISO 9001:2015 and ISO 14001:2015 standards.
Tense Elektronik is a manufacturer and supplier of electronic products and technologies in industrial automation solutions established in Turkey since 2006. The company specializes in automatic control sensors, controllers, energy analyzers, multimeters, frequency meters, ammeters, timers, among others. It serves industrial sectors such as automotive, manufacturing, construction, food and aerospace. The company's products improve operational efficiency, fluid processes in industries and the optimization of production lines and quality control processes. The company has certification in the Iso 9001:2015 Quality Management System, TSE Certificate and RoHS.
Beijing Connetech LTD., founded in 2007 and headquartered in Beijing, China, is a supplier and manufacturer of solutions and services for industrial process measurement and control. The company provides a diverse product catalog, including a portable HART communicator, tank-side monitor, and 3D radar level scanner. These products find applications in temperature measurement and ensuring safe operations in critical settings, including low to high-pressure process reactors and storage tanks, as well as monitoring flow conditions and providing relay analog outputs.
BERNSTEIN AG is a manufacturer and distributor of electromechanical components that was established in 1947 in Germany. The company manufactures switches and sensors that range from insulated and metal enclosed to foot switches and safety switchgear. They also provide enclosure technology that deals with the implementation of support systems for various applications such as using housing to accommodate electrical, electronic, or pneumatic components and load-bearing systems made of aluminum and stainless steel. They also offer safety solutions related to the operation of lifts and escalators that are placed in malls and airports
FineTek Co., Ltd, established in 1979 and headquartered in New Taipei City, is an ATEX & IECEX and TAF/ilac-MRA certified manufacturer and supplier of process automation and flow measurement solutions. The company's product portfolio includes Level Transmitters, Flow Measurement devices, Pressure instruments, and Temperature sensors. These products are utilized for monitoring and controlling process conditions, ensuring safety in industrial environments, and optimizing resource allocation. They are adopted by industries such as Water Treatment, Maritime, Steel, Power, and Construction. Additionally, the company offers services in wireless technology integration, pneumatic, and product solutions.
VEGA Controls Ltd. is based in Burgess Hill, West Sussex, UK, and serves as a manufacturer and distributor of sensors for industrial processing operations. It was established in 1984 as a subsidiary of Germany’s VEGA Grieshaber KG. The company primarily produces pressure sensors for measuring the force exerted by process materials, level sensors for measuring the height or volume of process materials, and point level sensors for detecting the presence or absence of process materials in a vessel beyond predesignated points. VEGA's products find common usage among clients in the food and beverage, water processing, and chemical processing industries.
Mercury Displacement Industries, Inc. is a manufacturer of liquid level control float switches and related products established in 1975 and located in Edwardsburg, Michigan, United States. The company offers high-temperature float switches for resisting extreme temperature environments, vertical floats for use in industrial basins or tanks, and mercury float switches for liquid level control. It also offers monitoring systems for precautionary applications, such as control panels and tank alarms. The company’s products are used by clients in the oil and gas, chemical processing, and wastewater treatment industries.
Locon Sensor Systems Inc., founded in 1986 with headquarters in Maumee, Ohio, USA, is a manufacturer and distributor of sensors and related accessories. The company's product line includes photoelectric sensors, inductive proximity sensors, connecting cables, fiber optic cables, and capacitive switches. These products are used in applications that include color detection, small part detection, mobile equipment, and printing machine vision. The company serves various markets, including automotive, construction, dental, medical, and commercial industries.
MBA Instruments GmbH, established in 1973 and headquartered in Quickborn, Germany, is an industrial measurement instrument and technology solution manufacturer and B2B supplier. The company specializes in level sensors and switches for silos and conductivity measurements for pipelines and tanks. Its products include level switches, rotating paddle detectors, and mobile and continuous conductivity measurement instruments. The company's conductivity measurement devices precisely monitors and controls conductivity in mineral oils and rolling oils to avoid electrostatic risks and potentially explosive situations. It also provides remote control systems to avoid overcrowding in silos.
Shanghai Yangji Electronic Technology Co. Ltd is a manufacturer and supplier of various industrial meters that was established in 2012 in Shanghai, China. The company’s product lineup includes heat meters such as mechanical and heat cost allocation models, gas meters such as turbine and diaphragm models, and water meters such as ultrasonic and prepaid models. It also offers electricity meters such as three- and single-phase models. The company’s products are primarily used by clients in the property and facility management sector, as well as in the smart city industry.
Dandong Top Electronics Instrument Co. Ltd., established in 1992 and headquartered in Liaoning, China, is a level and flow instrumentation designer, manufacturer, and supplier. The company's products include level meters, flow meters, and related products, such as guided wave radar level transmitters, high-pressure displacement level controllers, and automatic filling and anti-freezing liquid insulation devices. These products are used in process control instruments and automation for various industries, including metallurgy, mining, and marine. The company serves wholesale buyers and also offers full OEM and ODM services.
Telemecanique Sensors, established in 1924 and headquartered in Rueil-Malmaison, France, is a manufacturer and supplier of sensors and sensor-related technology. With a global reach encompassing over 100 subsidiaries and distributors across 50 countries, its offerings which include inductive proximity sensors for object detection, photoelectric sensors, ultrasonic sensors for measurements like level and thickness, capacitive proximity sensors for liquid level detection, and limit switches for object position sensing find applications in diverse industries such as manufacturing, food and beverage, transportation, medical, and utilities. Its facilities are also all compliant with ISO 14 001 global standard.
Parker Hannifin Corporation was founded in 1917 and is headquartered in Cleveland, Ohio. Parker Hannifin is a manufacturer and distributor of motion and control technologies and systems for markets including mobile, industrial, and aerospace. Parker-Hannifin operates through two segments: diversified industrial and aerospace systems. Diversified industrial offers sealing, shielding, thermal products and systems, adhesives, diagnostics solutions, and hydraulic, pneumatic, and elctromechanical components and systems or industrial machinery and equipment. The aerospace segment offers control actuation systems and components, engine exhaust nozzles and assemblies, pilot controls, as well as others.
WIKA Group was founded in 1946 and is headquartered in Klingenberg, Germany. The company serves industries such as food and beverage, power generation, refrigeration, and semiconductor, but is primarily known for medical equipment. The company’s six primary product market segments are Pressure, Temperature, Level, Force, Flow, and Calibration. In addition, the company offers Industrial IoT services including conditional monitoring and alarming, asset tracking, predictive maintenance, and process automation. The company also offers standard calibration, repair, and consultancy services in addition to providing online tools for customer assistance.
PMC-STS Inc., founded in 1963 and based in Danbury, Connecticut, is a manufacturer of pressure, vacuum, and level sensor instruments for aerospace, motorsports, and water applications, among others. The company also provides customized solutions and products to meet challenging customer requirements. It is the first manufacturer offering flush-mounted transmitters for measuring in-process pulp in wastewater, paper, and other difficult fluid level and pressure measurements. In 2022, the company was acquired by Sensor Technik Sirnach AG to help penetrate the North American market further and benefit from both application and product expertise.
Campbell Scientific Inc., established in 1974 and headquartered in Logan, Utah, is a designer and manufacturer of measurement, data acquisition systems, and data loggers. The company sells sensors, measurement devices, and OEM products for water, weather, and soil applications. It also provides software for several purposes, including communication between data loggers and supporting data logger programming. It is ISO 14001, ISO 9001, and ISO 27001 certified, and it marketed its first product, named the CA-9 Path-Averaging Laser Anemometer, in 1974. It introduced its first data acquisition system, the CR5 Digital Recorder, in 1975.
Alfa Laval, founded in 1883 and headquartered in Toronto, Canada, is a supplier of heat transfer, separation, and fluid handling products like boilers, separators, and heat exchangers. The company’s operations are based on three key technologies, which are heat transfer, separation, and fluid handling, and it helps farmers separate, process, and store milk products. The company has 42 production units, out of which 22 are based in Europe, and it sells its products in over 100 countries. It invests about 2.5% of its total yearly sales in research and development, resulting in around 25-30 new product launches per year.
Sitron, started in 1978 and headquartered in Sao Paulo, Brazil, is a manufacturer of industrial measurement and control solutions used in temperature, pressure, and vibration applications, among others. Its products include hydrostatic level transmitters, flow switches, and pressure transmitters. The company’s CN series of conductive level switches come with integrated internal electronic relays within the housing, eliminating the need for a separate remote controller. In addition, the company’s HFS high-frequency limit level sensor, made using an all-stainless-steel housing, detects the level of fluids or paste-like media while being immune to build-up on the electrodes.
AutomationDirect.com was founded in 1994 to provide solutions for the industrial automation market and has been growing its list of offerings ever since. AutomationDirects’ extensive catalog includes individual components such as cables, various controls, I/O devices, relays, gauges, fittings, and sensors to complete systems. Many parts and devices, especially PLC units are customizable. AutomationDirect.com also provides support via video instructions, online manuals, a learning library, an active community forum to further assist customers.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Barksdale |
4.5%
|
| 2 | Whitman Controls |
4.1%
|
| 3 | FPI Sensors |
3.8%
|
| 4 | Sierra Instruments, Inc. |
3.8%
|
| 5 | Standex Electronics, Inc. |
3.8%
|
| 6 | SSI Technologies, LLC |
3.1%
|
| 7 | Walchem |
3.1%
|
| 8 | AECO SRL |
2.1%
|
| 9 | Gems Sensors & Controls |
2.1%
|
| 10 | Littelfuse, Inc |
2.1%
|
Derivation Method
The ranking is calculated based on the click share within the level switch page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
23 | 37.7% |
|
China
|
8 | 13.1% |
|
Germany
|
7 | 11.5% |
|
Japan
|
6 | 9.8% |
|
Italy
|
5 | 8.2% |
|
United Kingdom
|
3 | 4.9% |
|
Spain
|
2 | 3.3% |
|
Switzerland
|
2 | 3.3% |
|
Denmark
|
1 | 1.6% |
|
Israel
|
1 | 1.6% |
| Hungry | 1 | 1.6% |
|
Turkey
|
1 | 1.6% |
Bulgaria
|
1 | 1.6% |
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