12 Non-Contact Temperature Sensor Manufacturers in 2022
This section provides overview, applications, and principles of non-contact temperature sensors. Also, please take a look at the list of 12 non-contact temperature sensor manufacturers and their company rankings.
Table of Contents
What Is a Non-Contact Temperature Sensor?
A non-contact temperature sensor is a sensor that can detect temperature without being directly attached to the object being measured. They use infrared rays emitted by an object scattered by incident neutrons and the velocity distribution of particles.
Most non-contact temperature sensors on the market are infrared sensors. The principle of operation of infrared sensors is to detect infrared radiation using a sensing element and calculate the temperature of the object being measured.
Emissivity is used to calculate the temperature. Emissivity is the amount of infrared radiation relative to the surface temperature determined for each object and is necessary when using a non-contact temperature sensor.
Uses of Non-Contact Temperature Sensors
Non-contact temperature sensors are used in situations where it is difficult or impossible to measure with contact temperature sensors. Specifically, they are used for objects that are moving or rotating or for objects that cannot be used as products if they come into contact with them.
Examples of use are shown below:
- Measuring the temperature of food in a baking process in a food factory
- Temperature measurement of industrial products to determine the degree of drying after painting
- Measurement of temperature distribution of products in a lathe
Principle of Non-Contact Temperature Sensors
This section describes typical infrared-based sensors.
Sensors using infrared light consist of a light-collecting lens, thermopile, amplifier, and a device that calculates temperature from emissivity.
The temperature measurement procedure for non-contact temperature sensors is described in turn.
- Focusing infrared light: Infrared light is focused using an infrared condenser lens. By focusing infrared rays in the detectable wavelength band, the measurement accuracy can be improved.
- Converting infrared light into an electrical signal: A thermopile is used to convert infrared light into an electrical signal for output. The thermopile is an infrared detection element that outputs an electrical signal in response to the temperature heated by infrared rays.
- Amplifying the electrical signal: An amplifier is used to amplify the electrical signal emitted from the thermopile. Amplification allows for more accurate detection.
- Calculate temperature from infrared and emissivity: A correction is made to calculate the temperature of the object being measured. Emissivity is used for the correction. Emissivity is the ratio of the amount of infrared radiation emitted to the surface temperature of an object, which is constant for each object. The temperature of the object to be measured is calculated using the amount of infrared radiation detected from the electrical signal converted by the thermopile and the emissivity of the object measured in advance.
Measuring Body Temperature with Non-Contact Temperature Sensors
Non-contact sensors are currently being used to measure body temperature. They are used in numerous situations, such as in restaurants and when going to work.
The advantage of using non-contact sensors compared to contact-type in cases where the body temperature is measured between the sides or mouth, is that the measurement time is shortened because the temperature can be measured quickly. Also, when measuring the body temperature of an unspecified number of people, the time required for disinfection each time is reduced, and the sensor can be used with peace of mind in terms of hygiene.
On the other hand, the disadvantage of non-contact sensors is that they are greatly affected by their external environment, such as ambient temperature and sunlight, because they use infrared rays. They are also less accurate than contact sensors. It is necessary to adjust the temperature calculation method and environmental conditions while considering the location where the non-contact sensor will be used.
There are two main types of non-contact sensor-based body temperature measurement devices in use today.
1. Portable (handheld)
A person or a third party holds a temperature measurement device in his or her hand and places it close to the forehead or wrist to measure body temperature. They do not require a power supply and can be easily carried around as they are lightweight and compact.
2. Installation Type (automatic temperature measurement)
The device can automatically measure body temperature without human intervention when the person to be measured stands in front of the device. Most of them are expensive because they combine face recognition technology and thermographic cameras. The device does not require the user to touch the device for measurement and depending on the device. Measurements can be taken from a distance of 0.5 to 1.5 meters.
Appropriately Utilizing Non-Contact Temperature Sensors
Non-contact sensors have a fixed range and distance that can be measured. The range that can be measured is called the spot diameter. The smaller the spot diameter is compared to the object or person to be measured (the spot diameter fits within the range of the object to be measured), the more stable the temperature can be measured.
In addition, when measuring a high-temperature object, it is necessary to take measures such as blocking off the area outside the spot diameter or cooling the non-contact temperature sensors to prevent damage due to the heat generated by the non-contact temperature sensors themselves.
List of 12 Non-Contact Temperature Sensor Manufacturers
*Including some distributors, etc.
Sort by Features
- Default
- Company Size: largest first
- Year Founded: oldest first
- Year Founded: earliest first
Sort by Area
- France
- Germany
- Italy
- United Kingdom
- United States of America
Non-Contact Temperature Sensor Manufacturer Ranking
*Including some distributors, etc.Ranking as of January 2023 in United States
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Tempsens, Inc. | 33.3% |
| 2 | Dr. Georg Maurer | 33.3% |
| 3 | Pixsys | 33.3% |
Ranking as of January 2023 Globally
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Tempsens, Inc. | 33.3% |
| 2 | Dr. Georg Maurer | 33.3% |
| 3 | Pixsys | 33.3% |
Derivation Method
The ranking is calculated based on the click share within the non-contact 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
- Omega Engineering: 605
- Pixsys: 14
Newly Established Company
- Fluke Process Instruments: 2017 (6 years ago)
- Optris: 2003 (20 years ago)
- Texense: 1999 (24 years ago)
Company with a History
- Dr. Georg Maurer: 1945 (78 years ago)
- AMETEK Land: 1947 (76 years ago)
- Omega Engineering: 1962 (61 years ago)
Related Products
Search from All Categories
This is the version of our website addressed to speakers of English in the United States. If you are a resident of another country, please select the appropriate version of Metoree for your country in the drop-down menu.