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This section provides an overview for recording thermometers as well as their applications and principles. Also, please take a look at the list of 3 recording thermometer manufacturers and their company rankings. Here are the top-ranked recording thermometer companies as of March, 2026: 1.Testo SE & Co. KGaA, 2.CHINO, 3.ThermoWorks.
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Categories Related to Recording Thermometers
A recording thermometer is a device that automatically measures and records changes in air temperature over time also referred to as a self-registering thermometer.
There are two types of recording thermometers, each with a different mechanism.
One type utilizes the thermal expansion of metals, such as bimetals or Bourdon tubes, where the thermal expansion drives the pen of the self-registering device.
The other type uses the change in electrical resistance with temperature and employs a thermistor to convert the resistance change into an electrical current, which is then used to record the temperature with a recording thermometer.
Recording thermometers are generally not very sensitive and may have a few minutes of delay when recording. Despite this, they can provide valuable information such as the time of maximum and minimum temperatures and the temperature change at any given time.
For this reason, recording thermometers are used in general weather observation, educational institutions, air conditioning systems, hospitals, warehouses, and other situations where temperature control is necessary.
Additionally, they find application in museums and art galleries to protect exhibits and are used in various settings such as chemical and food storage rooms in warehouses, agriculture, production plants for precision machinery like semiconductors and LSIs, and environmental laboratories.
Bimetal thermometers consist of a sensor made from two pieces of metal with different coefficients of thermal expansion bonded together. Temperature changes cause warping of the metal, which varies with temperature and is used to measure temperature changes.
The Bourdon tube is a flat oval metal tube with a flat cross-section, sealed at one end and wound into a nearly circular shape, with one end fixed in place. As the temperature rises, the alcohol or ether sealed inside the tube expands, displacing the unfixed end of the tube, thus measuring temperature changes.
Recording thermometers that employ bimetals or Bourdon tubes use leverage to amplify the warping of the bimetals or the displacement of the Bourdon tube caused by temperature changes. This amplification is transmitted to a pen in the recording device, which records the data on chart paper (recording paper) wound around a drum rotating in a clockwork mechanism.
Thermistors are electronic components whose resistance changes with temperature variations. Thermistor thermometers measure resistance by passing a small amount of electric current through the sensor part's metal, converting it into a temperature value. Since the measurement is conducted electrically, a digital display is also possible, and temperature changes can be recorded in a digital data logger.
*Including some distributors, etc.
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ThermoWorks, a company established in 1997 and based in Salt Lake City, Utah, US, is a designer and manufacturer of thermometers. It provides temperature probes, loggers, timers, cooking alarms, and thermapens used in farming, road construction, pharmaceutical, manufacturing, and heavy industries. The company's thermometers and time loggers are also used in cold chain management to ensure food safety, and it offers various services such as accredited calibration, thermometer repair, technical support, and cloud services.
Established in 2006, Testo India Pvt. Ltd., a Pune, India-based subsidiary of Testo SE & Co. KGaA, is a manufacturer and supplier specializing in measuring instruments. Complying with the ISO/IEC 17025:2017 standard set by the National Accreditation Board for Testing and Calibration Laboratories (NABL), the company produces measuring instruments for temperature, humidity, pressure, and flow (bulk fluid movement). The company also offers electrical, sound level, and nanoparticle measuring devices. These products are designed for industrial applications with regard to heating, ventilation, air conditioning, and refrigeration (HVAC-R), as well as environmental monitoring technology, in sectors like food service, retail, and pharmaceuticals.
Ranking as of March 2026
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Testo SE & Co. KGaA |
31.3%
|
| 2 | ThermoWorks |
25.0%
|
| 3 | CHINO |
25.0%
|
| 4 | Matest |
12.5%
|
| 5 | Graphtech Co., Ltd. |
6.3%
|
Derivation Method
The ranking is calculated based on the click share within the recording thermometer page as of March 2026. 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
|
1 | 33.3% |
|
Germany
|
1 | 33.3% |
|
Japan
|
1 | 33.3% |
58 products found
58 products
SANKO ELECTRONIC LABORATORY CO.,LTD
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■ Features For recording management of the painting environment, for creating a report to public corporations, etc.
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A bimetallic thermometer is an indicating thermometer that utilizes the property of bimetallic material to bend depending on the temperature.It is ...
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RKC INSTRUMENT
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Adds a sense of perfection to the ease of paper records. ■Multi-display allows you to check data at a glance - You can choose from 80 different di...
10 models listed
TAMAYA TECHNICS INC.
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Measuring water level, voltage (external power supply voltage), and temperature
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Sanwa Keiki Seisakusho Co., Ltd.
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An indicating thermometer that is inserted directly into tanks, piping, etc. This is a metal thermometer that uses changes in expansion pressure du...
Sanwa Keiki Seisakusho Co., Ltd.
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An indicating thermometer that is inserted directly into tanks, piping, etc. This is a metal thermometer that uses changes in expansion pressure du...
Sanwa Keiki Seisakusho Co., Ltd.
460+ people viewing
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A remote indicator thermometer that is installed embedded in a panel cutout of a control panel, etc. This is a metal thermometer that uses changes ...
Sanwa Keiki Seisakusho Co., Ltd.
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A bimetallic thermometer is an indicating thermometer that utilizes the property of bimetallic material to bend depending on the temperature.It is ...
Sanwa Keiki Seisakusho Co., Ltd.
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A wall-mounted remote indicator thermometer that can be installed with 3-point screws or hooks. This is a metal thermometer that uses changes in ex...
Sanwa Keiki Seisakusho Co., Ltd.
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A wall-mounted remote indicator thermometer that can be installed with 3-point screws or hooks. This is a metal thermometer that uses changes in ex...
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A bimetallic thermometer is an indicating thermometer that utilizes the property of bimetallic material to bend depending on the temperature.It is ...
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A bimetallic thermometer is an indicating thermometer that utilizes the property of bimetallic material to bend depending on the temperature.It is ...
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480+ people viewing
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A bimetallic thermometer is an indicating thermometer that utilizes the property of bimetallic material to bend depending on the temperature.It is ...
Sanwa Keiki Seisakusho Co., Ltd.
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A bimetallic thermometer is an indicating thermometer that utilizes the property of bimetallic material to bend depending on the temperature.It is ...
Sanwa Keiki Seisakusho Co., Ltd.
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A bimetallic thermometer is an indicating thermometer that utilizes the property of bimetallic material to bend depending on the temperature.It is ...
Sanwa Keiki Seisakusho Co., Ltd.
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This hot spring thermometer is used in hot spring inns and bath facilities with special spring quality. The temperature sensing part and internal c...
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This is a recorder with a simple function that only records temperature. A 7-day recording sheet is included.
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■Features - A small and lightweight temperature/humidity recorder that can be installed anywhere. *Calibration certificate can be issued.
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310+ people viewing
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