32 RTD Manufacturers in 2024
This section provides an overview for rtds as well as their applications and principles. Also, please take a look at the list of 32 rtd manufacturers and their company rankings. Here are the top-ranked rtd companies as of April, 2024: 1.NOSHOK, Inc., 2.Honeywell International Inc, 3.Thermo Sensors Corporation.
Table of Contents
What Is a RTD?
RTD stands for resistance temperature detector. It is a type of temperature sensor, also called a resistance thermometer.
RTD is a temperature sensor that utilizes the property of electrical resistance of metals to increase with increasing temperature.
The RTD element, which is the temperature sensing part of RTD, is made of a metal with a large temperature coefficient of electrical resistance and good linearity, such as platinum, nickel, or copper. Because the relationship between the resistance of the metal and the temperature is precisely known, RTDs can measure temperature with high accuracy.
Uses for RTDs
Because RTD is a highly accurate, stable, and reproducible temperature sensor, it can be used to measure the temperature of pipes, ducts, and rooms of air conditioning in buildings and factories. They are used to monitor the condition of solar power generation. They are also used to control the temperature in clean rooms, refrigerators, and freezers in semiconductor factories, saunas, swimming pools, hot springs, and plastic greenhouses; and to measure the internal temperature of food.
In particular, RTDs are often used for precise measurement of ambient temperatures around motors, motors, and high-voltage equipment in factories because of their low susceptibility to electrical noise.
Characteristics of RTDs
The electrical resistance of metals generally varies almost in proportion to temperature. This is because, as temperature rises, the movement of metal atoms becomes more active, making it more difficult for electrons to pass through and increasing electrical resistance.
RTDs use this principle to measure temperature. Specifically, a constant current is applied to the RTD, the potential difference between the two ends of the RTD is measured, the resistance is calculated from Ohm's law (E=IR), and the temperature is determined from the standard resistance table for the metal used in the RTD element.
There are three conductor formats for measuring the resistance of RTDs: 2-wire, 3-wire, and 4-wire, each with a different measurement circuit.
The 2-wire type is inexpensive, but the internal resistance of the conductors is added to the measured resistance, resulting in a large measurement error for RTDs with low resistance.
The 3-conductor type is most often used for industrial measurements because the conductor resistance is offset at both ends of the bridge in the measurement circuit, making conductor resistance virtually negligible.
The 4-conductor type is even more precise than the 3-conductor type because the current supply and voltage detection terminals exist separately and are not affected by conductor resistance.
While RTDs have advantages, such as high accuracy, excellent stability, and good sensitivity to temperature, making them suitable for temperature measurements near room temperature. They also have disadvantages, such as being unsuitable for high-temperature measurements and being susceptible to mechanical shock and vibration due to their minute internal structure.
List of 32 RTD Manufacturers
*Including some distributors, etc.
Sort by Features
- Default
- Company Size: largest first
- Year Founded: oldest first
- Year Founded: earliest first
Sort by Area
- United States of America
- Belgium
- Ireland
- Japan
- Switzerland
- Taiwan
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NOSHOK, Inc.
Industrial RTDs
Manufacturer Overview
The company NOSHOK was founded in the year 1967 and they are located in the United States of America in the state of Ohio in the city of Berea. NOSHOK provides many different products such as pressure gauges, transmitters, transducers, pressure switches, level transmitters, temperature devices, valves, diaphram seals, digital indicators, KING filters, and additional accessories. Many of these products have been introduced by the company over time and they continue to introduce many new products.
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Littelfuse, Inc
Leaded RTD Sensors
Manufacturer Overview
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.
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Honeywell International Inc
RTD Sensors
Manufacturer Overview
Honeywell International Inc. was founded in 1885 and headquartered in Charlotte, North Carolina. Honeywell is a diversified technology and manufacturing company to global customers in many industries such as aerospace, building technologies, performance materials, manufacturing, and safety. Honeywell produces hardware and software solutions for each industry it serves. In building technologies, Honeywell designs access controls, electrical and wiring, fire life safety, and employee training services. In aerospace, Honeywell designs cockpit systems and displays, engines, cabin management and cleaning, and health and usage monitoring.
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Tempco Electric Heater Corp.
Resistance Temperature Detectors
Manufacturer Overview
Tempco is based in Wood Dale, Illinois and has been in business since 1972. Tempco is a manufacturer of many types of heating elements and thermocouples with design variations. Tempco is ISO 9001:2015 certified. Temco’s electric heaters and elements include band heaters, cartridge heaters, cast-in heaters, ceramic fiber heaters, coil and cable heaters, drum heaters, enclosure heaters, flexible heaters, heat trace cable, heated hose and tubing, infrared heaters, process heaters, shroud systems, strip heaters, tank heaters, and tubular heaters. Tempco also sells various application accessories and wiring accessories.
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ARi Industries, Inc.
RESISTANCE TEMPERATURE DETECTORS
Manufacturer Overview
ARi, established in 1952 in Chicago, is a manufacturer and supplier of quality thermal management products for various industrial and commercial process applications. The company’s products include thermocouples, RTDs, and heaters. They offer custom solutions, facilitated by their in-house manufacturing of mineral insulated cable with applications in automotive, medical, aerospace, and other industries. ARi’s management meets ISO 9001:2015 requirements, as certified by National Quality Assurance (NQA). They offer customers complete NDT (non-destructive testing) procedures and certification for all cable and finished assemblies.
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Durex Industries
Resistance Temperature Detectors
Manufacturer Overview
Durex Industries is an American ISO 9001 certified manufacturer of heaters, temperature sensors, and controls founded in 1980 before its acquisition by the British company Spirax-Sarco Engineering in 2022. Based in Cary, Illinois, the company offers thermal solutions and custom engineering of electric heaters, temperature sensors, process heating systems, and temperature controls. They serve clients in various industries including those in packaging, medical and life sciences, semiconductor manufacturing, and aerospace technology. Durex Industries also provides design, contract manufacturing, and testing services to customers with unique projects.
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Watlow Electric Manufacturing Company
Resistance Temperature Detectors
Manufacturer Overview
Watlow Electric Manufacturing Co. was established in 1922 and is headquartered in St. Louis, Missouri as a manufacturer and designer of heating solutions. Their product portfolio includes electric resistive heaters, temperature sensors, temperature and power controllers, and supporting software. The industrial technology and thermal products offered by the company are crucial components in optimising thermal performance, decreasing design time, and improving the efficiency of products and applications. The company's sales offices span 16 countries, serving diverse industries like semiconductor processing, energy processes, environmental chambers, diesel emissions, and foodservice equipment, among others.
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Analog Devices, Inc.
Resistance Temperature Detectors
Manufacturer Overview
Incorporated in 1965, Analog Devices, Inc. designs, manufactures, tests, and markets integrated circuits (ICs), software, and subsystems that leverage analog, mixed-signal, and digital signal processing technologies. The company provides data converter products, power management and reference products for power conversion, driver monitoring, sequencing, and energy management applications in the automotive, communications, industrial, and high-end consumer markets. In addition, the company provides digital signal processing and system products for high-speed numeric calculations. It serves clients in the industrial, automotive, consumer, instrumentation, aerospace, and communications markets.
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Custom Control Sensors, LLC
Resistance Temperature Detectors
Manufacturer Overview
Custom Control Sensors, LLC, established in 1958 and headquartered in the United States, is a foremost manufacturer of advanced pressure, temperature, and flow sensing solutions. With a rich history of innovation, the company caters to diverse industries. Their product line encompasses pressure switches, temperature sensors, and flow switches, applied in aerospace, automotive, and industrial sectors. For instance, their precision-engineered pressure switches ensure safety in aircraft fluid systems. Upholding high standards of quality and reliability, Custom Control Sensors, LLC remains a preferred partner in delivering cutting-edge sensing solutions.
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Moore Industries International, Inc.
RBX RTD Transmitter
Manufacturer Overview
Moore Industries International, Inc., established in 1968 in North Hills, California, USA, is a manufacturer of a diverse range of process control and monitoring instruments. The product varieties include temperature transmitters, signal conditioners, and alarm trips that provide the benefits of precise data acquisition, enhanced safety, and improved process efficiency. It serves a wide spectrum of industries, including oil and gas, petrochemicals, power generation, and water/wastewater treatment, offering advanced process automation. The company is ISO 9001, RoHS, REACH, and UKCA certified, and is certified explosion-proof.
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Omega Engineering, Inc.
Surface Mount RTD with Brass Housing
Manufacturer Overview
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.
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The Transmitter Shop
Resistance Temperature Detectors
Distributor Overview
The Transmitter Shop, established in 1984 and headquartered in Pasadena, Texas, USA, is a supplier of new and refurbished transmitters and related equipment for the pharmaceutical, food and beverage, mining, and oil and gas industries. The company specializes in providing various transmitters, sensors, and instrumentation products. Its primary offerings include pressure transmitters, electronic transmitters, pneumatic transmitters, temperature transmitters, and flow meters. These instruments find applications in process control and monitoring in oil refineries, petrochemical plants, and other industrial facilities.
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AZ Instrument Corp.
RTD
Manufacturer Overview
AZ Instrument Corp., founded in Taichung City, Taiwan, in 1991 is a manufacturer of instruments and wearable devices to measure, monitor and record temperature. The company's product portfolio includes , Data Loggers, Gas Analysis Meters, Water Quality Testers, Heat Index Meters and Hygro-Thermometers. The company serves industries such as Oil and Gas, Aerospace and Defense, Automotive and Transportation, Construction, and Power Generation. They also provide services including product selection, installation, preventative maintenance, troubleshooting, and repair.
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Endress+Hauser
RTD Thermometer
Manufacturer Overview
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.
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RKC INSTRUMENT
Temperature Sensors
Manufacturer Overview
RKC Instrument has been continually growing for over half a century and strives to be a solution provider of measurement and control systems. RKC supplies quality products and professional engineering services quickly and efficiently. RKC specializes in everything from limit and multiloop controllers to heater break alarms and temperature sensors. RKC has a website in Chinese, English, and Japanese and has sales networks across the globe. Based on the management concept of “Realization of the highest quality,” RKC Instrument has obtained the accreditation of ISO9001, the international standard for quality management systems.
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CHINO
Temperature Sensors
Manufacturer Overview
Chino, headquartered in Tokyo, Japan, is engaged in the manufacture and sale of measurement and control equipment and instrumentation work. The company was founded in 1936 as Chino Seisakusho. Chino operates in the area of "measurement, control, and monitoring" and contributes to the development of all industrial fields. Major products include recorders, regulators, temperature sensors, data loggers, radiation thermometers, thermal image measuring devices/thermal cameras, composition meters, moisture meters, thickness meters, thyristor regulators, and fuel cell evaluation and testing devices.
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KOA Corporation
Thermal Sensors
Manufacturer Overview
KOA Corporation, established in 1940 in Minowa-machi, Japan, is a manufacturer of electronic components. The company provides an extensive product range including resistors, current sense shunt resistors, fuses, thermal sensors, and inductors. These quality components find applications in industries such as automotive, ecology, energy conservation, telecommunications, power supply units, and home appliances. Operating under the guiding principles of circulation, finite resources, harmony, and enrichment, it continues to provide sustainable electronic solutions to cater to the ever-changing demands of global industries.
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NESSTECH INC.
TWIN TEMP
Manufacturer Overview
Nesstech Inc., established in 1956 and based in Chiba, Japan, is a manufacturer of temperature and pressure measuring instruments. The company produces gauges with a unique “Gearless” mechanism which allows them to be used under severe vibration and pulsation without any dampening liquids or accessories. The company has an office in Malaysia, and a production facility in India to provide diverse support to all the customers across the world.
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Tokyo Measuring Instruments Laboratory Co., Ltd.
Platinum RTD/Thermocouples
Manufacturer Overview
Established in 1954, Tokyo Measuring Instruments Laboratory Co., Ltd. (Tokyo Sokki Kenkyujo Co., Ltd.) is a manufacturer headquartered in Tokyo, Japan, specializing in stress measurement equipment. The company has developed a wide range of strain gauge transducers, essential components for stress measurement in general and civil engineering. The company also produces other instruments, such as the portable digital strainmeter for automatic multi-point measurements. With overseas representative offices in China, Germany, and 43 other countries, TML serves global customers, providing solutions for the safety and efficiency of structures.
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Pyromation
Resistance Temperature Detectors
Manufacturer Overview
Pyromation Inc., founded in 1962, is a temperature sensor manufacturer based in Fort Wayne, Indiana, United States. The company produces industrial thermocouples and other products including resistance temperature detectors, temperature transmitters, and thermowells. It also provides design-patented connection heads along with wires and related accessories. The company has been accredited by the National Voluntary Laboratory Accreditation Program (NVLAP) and holds ISO 9001 quality certification. It has implemented Lean Manufacturing since 2013 and serves various industries, including food and beverages, energy and power, and metal processing.
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PR electronics
RTD temperature sensors
Manufacturer Overview
PR electronics, founded in Denmark, in 1976 is a manufacturer of signal conditioning devices. The company's product portfolio includes temperature transmitters, communication interfaces, multifunctional devices, displays and accessories. Their products are used to make industrial process control safer, more reliable, and more efficient. The company serves markets including Automotive and Electric Vehicles, Renewable Energy and Energy Storage and Electronics and IT Infrastructure. The company provides services such as Product Selection Guidance, Engineering Support, and Custom Manufacturing.
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Tempsens, Inc.
Resistance Temperature Detector
Manufacturer Overview
Tempsens Instruments (I) Pvt. Ltd., established in 1990 and currently a subsidiary of Pyrotech Electronics Pvt. Ltd., is an Indian manufacturer headquartered in Udaipur, Rajasthan, specializing in thermal and cable products. The company offers a range of products encompassing cables and wires, contact temperature sensors, circulating chillers, heating cables and mats, and industrial heaters. Its portfolio also includes industrial and laboratory furnaces, mineral insulated cables, nickel and thermocouple alloys, non-contact temperature sensors, and temperature calibrators. Additionally, the company provides thermal profiling systems and thermocouples with molded connectors. These products find applications in various industries, including cement, glass, petrochemical, pharmaceutical, and steel sectors.
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Daikin Europe N.V.
RTD-NET
Company Overview
Daikin, a subsidiary of Japan-based Daikin Industries Ltd, was established in 1972 in Ostend, Belgium, as a manufacturer and supplier of heating, cooling, ventilation, refrigeration, and air purification solutions for industrial, commercial, and residential applications. The company also provides stock units, chillers, heat pumps, air handling units, smart controls, and other solutions for homes, retail centers, offices, hotels, and large buildings. It also provides pre-sales and after-sale services to its customers in Europe, Africa, and the Middle East.
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United Electric Controls
Industrial Resistance Temperature Detectors
Company Overview
United Electric Controls is an ISO 9001-certified manufacturer of safety and control products for process equipment that was founded in 1931 in Watertown, Massachusetts, USA. The company produces detectors, switches, and measurement instruments that can be designed to integrate into existing systems, or function separately. These include electronic pressure switches, gas detectors for monitoring combustible or toxic gasses, and process temperature maintenance products with emergency shutdown features. The company also offers additional product repair, engineering, and calibration services.
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Thermometrics Corporation
RTDs
Company Overview
Thermometrics Corporation, founded in 1965, is an American manufacturer based in Northridge, California, specializing in temperature sensors and related instrumentation. The company offers various sensors, including resistance temperature detectors (RTDs) and temperature sensors. It also manufactures related products such as thermistors, thermocouples, and infrared (IR) thermometers. The company offers complementary products like thermowells and cable assemblies, as well as calibration services to ensure the accuracy of temperature sensors over time. It serves scientific laboratories and diverse industries, including chemical processing, heating, ventilation, air conditioning (HVAC), and power generation.
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DALIAN BOCON SCIENCE & TECHNOLOGY CO.,LTD
temperature sensor
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AMETEK SENSORS
Resistance Temperature Detectors
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JUMO Control S.A.
RTD temperature probes
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Flexachem Manufacturing Ltd
RTD Temperature Sensors
Distributor Overview
Flexachem is based in Ireland since 1982 as a supplier of Components & Process Equipment. The company provides Mechanical Seals that are used on agitators, mixers, etc. along with different types of pumps like Centrifugal, Magnetic Drive, Diaphragm, and Self Priming Pump that aids in the flow of liquid from low to high-pressure areas. There are also valves that have various configurations for different conditions and services. The Process Equipment includes machines for Mixing applications, Tank Venting, Tank & Pipeline Ancillaries, and WWTP & Anaerobic Digesters. They serve numerous industries like Pharmaceutical, Biotechnology, Food and Beverage, Dairy, and more.
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Okazaki Manufacturing Company
RESIOPAK Mineral Insulated Resistance Thermometer Sensor
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RTD Manufacturer Ranking
*Including some distributors, etc.Ranking as of April 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | NOSHOK, Inc. |
7.6%
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| 2 | Honeywell International Inc |
7.6%
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| 3 | Thermo Sensors Corporation |
6.0%
|
| 4 | Custom Control Sensors, LLC |
5.6%
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| 5 | Durex Industries |
5.6%
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| 6 | ARi Industries, Inc. |
5.6%
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| 7 | Tempco Electric Heater Corp. |
5.6%
|
| 8 | Watlow Electric Manufacturing Company |
5.2%
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| 9 | Littelfuse, Inc |
4.8%
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| 10 | PR electronics |
4.0%
|
Derivation Method
The ranking is calculated based on the click share within the rtd page as of April 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
- JUMO Control S.A.: 2,585
- KOA Corporation: 1,622
- CHINO: 994
Newly Established Company
- AZ Instrument Corp.: 1991 (33 years ago)
- Flexachem Manufacturing Ltd: 1982 (42 years ago)
- Durex Industries: 1980 (44 years ago)
Company with a History
- CHINO: 1936 (88 years ago)
- RKC INSTRUMENT: 1937 (87 years ago)
- NESSTECH INC.: 1956 (68 years ago)
RTD Manufacturers in United States
*Including some distributors, etc.
- NOSHOK, Inc.
- Littelfuse, Inc
- Honeywell International Inc
- Tempco Electric Heater Corp.
- ARi Industries, Inc.
- Durex Industries
- Watlow Electric Manufacturing Company
- Analog Devices, Inc.
- Custom Control Sensors, LLC
- Moore Industries International, Inc.
- Omega Engineering, Inc.
- Thermo Sensors Corporation
- The Transmitter Shop
Global Distribution of RTD Manufacturers by Country
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
United States of America
|
13 | 59.1% |
Japan
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5 | 22.7% |
Taiwan
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1 | 4.5% |
Switzerland
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1 | 4.5% |
Belgium
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1 | 4.5% |
Ireland
|
1 | 4.5% |
List of RTD Products
1 product is listed.
Endress+Hauser Group Services AG
Termeter for process industries and converter Ithm CompactLine TM311 -PT100 Temperature sensor
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Compact, high-speed, high-speed resistance (RTD) sensor equipped with IO-Link ■ Applications Ithm Compactline TM311 Sanita thermometer enables hig...
