66 Temperature Sensor Manufacturers in 2022
This section provides overview, applications, and principles of temperature sensors. Also, please take a look at the list of 66 temperature sensor manufacturers and their company rankings.
Table of Contents
What Is a Temperature Alarm?
A temperature alarm is a device that sounds an alarm when the temperature detected by a temperature sensor rises above or below a set temperature.
Thermocouples are used as temperature sensors, which are made by bringing the tips of two different types of metal wires into contact to form a single circuit, using the Seebeck effect. A voltage is generated when there is a temperature difference between the contact points of the two types of metal wires.
Resistance Temperature Detectors (RTDs) using platinum (Pt), nickel (Ni), or copper (Cu) are also commonly used, taking advantage of the electrical resistance of metals and metal oxides that increases with increasing temperature.
Uses of Temperature Alarms
Temperature alarms are often used to send out alarms and shut down equipment to prevent overheating of heaters.
They are also used to alert people to abnormal temperatures in factories, plastic greenhouses, and refrigerators by means of lamps, sounds, and buzzers.
Alarms utilizing thermocouples, which have a long life span, high heat resistance, and high mechanical strength, are most commonly used for both domestic and industrial applications.
In addition, alarms using platinum resistance thermometers, which have a wide range of temperatures to be used, are used for research and industrial applications.
Principle of Temperature Alarms
The principle and structure of thermocouple temperature alarms are described below.
A minute voltage is generated in response to the temperature difference (Th-Tc) between the cold junction (Tc) of the connector part and the warm junction (Th) of the two types of metal wire contacts.
Incorporate a temperature sensor that outputs an absolute voltage corresponding to the temperature (Tc) of the cold contact at the connector section.
The temperature of the measured object (Th) is measured by combining the minute voltage resulting from the temperature difference (Th-Tc) and the voltage corresponding to the temperature (Tc) of the cold junction.
Furthermore, the sensor is used as an alarm by incorporating electronic components that emit an alarm signal when the voltage reaches a voltage, indicating the set temperature.
The principle and structure of a resistance thermometer temperature alarm are described below.
To measure temperature using a resistance thermometer, a certain current is applied to the resistance thermometer and the voltage at both ends is measured.
When the voltage becomes equal to the set temperature, an electronic component that outputs an alarm signal is built in and used as an alarm.
A 2-wire circuit with two leads for the resistance thermometer is affected by the resistance of the wires, so a 3-wire or 4-wire circuit may be used.
List of 66 Temperature Sensor Manufacturers
*Including some distributors, etc.
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Hampshire Controls Corp.
Temperature Sensors
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PCE Instruments
Temperature Sensors
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Pepperl+Fuchs Inc.
Temperature Sensors
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Temperature Sensor Manufacturer Ranking
*Including some distributors, etc.Ranking as of January 2023 in United States
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Atomation | 100% |
Ranking as of January 2023 Globally
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Atomation | 100% |
Derivation Method
The ranking is calculated based on the click share within the temperature sensor page as of January 2023. 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
- PCE Instruments: 1999 (24 years ago)
- Columbia Weather Systems, Inc.: 1998 (25 years ago)
- Del Val Controls, Inc: 1991 (32 years ago)
Company with a History
- Hampshire Controls Corp.: 1976 (47 years ago)
- Del Val Controls, Inc: 1991 (32 years ago)
- Columbia Weather Systems, Inc.: 1998 (25 years ago)
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