Which sensor is more effective for measuring temperature with industrial infrared thermometers?
What sensor is used for industrial infrared thermometers to measure temperature? Industrial infrared thermometers are used in many industrial applications, such as in glass and metal manufacturing to control the manufacturing process of very hot or fast moving objects, and in the food and pharmaceutical industries with special hygienic requirements. In the production process, industrial infrared thermometers play an important role in product quality control and monitoring, equipment online fault diagnosis and safety protection, and energy saving. In the past 20 years, non-contact infrared thermometers have developed rapidly in technology, their performance has been continuously improved, their functions have been continuously enhanced, their varieties have continued to increase, their scope of application has also continued to expand, and their market share has increased year by year. Compared with contact temperature measurement methods, industrial infrared temperature measurement has the advantages of fast response time, non-contact, safe use and long service life.
Infrared thermometer is a very popular temperature measuring instrument. It is a commonly used auxiliary tool in the field of industrial production and biochemical production. With the continuous development of science and technology, infrared thermometers are also constantly upgraded.
Let's take a look at the advantages of infrared thermometers
1. Non-contact measurement: It does not need to touch the inside or surface of the measured temperature field, so it will not interfere with the state of the measured temperature field, and the thermometer itself will not be damaged by the temperature field.
2. Wide measurement range: Because it is a non-contact temperature measurement, the thermometer is not in a higher or lower temperature field, but works at a normal temperature or under the conditions allowed by the thermometer. Under normal circumstances, it can measure minus tens of degrees to more than three thousand degrees, and it can also measure moving or vibrating objects.
3. Fast temperature measurement speed: that is, fast response time. As long as the infrared radiation of the target is received, the temperature can be fixed in a short time, and the fast measurement speed of multiple values per second.
4. High accuracy: Infrared temperature measurement will not destroy the temperature distribution of the object itself like contact temperature measurement, so the measurement accuracy is high.
5. High sensitivity: As long as there is a small change in the temperature of the object, the radiation energy will change greatly, which is easy to detect. It can perform temperature measurement and temperature distribution measurement of tiny temperature field, as well as temperature measurement of moving or rotating objects. It is safe to use and has a long service life.
6. No physical or chemical influence on the measured object.
7. Measure in explosive, corrosive, high pressure or high temperature environments.
8. Long service life and low maintenance cost.
A critical factor for accurate industrial measurements is the selection of an appropriate filter in front of the infrared thermopile sensor. To reduce the dependence of different atmospheric transmittances between the sensor and target, a high quality filter for the 8-14 µm range should usually be included. This wavelength range is also known as the far-infrared atmospheric window, where little absorption occurs. Therefore, the radiation emitted by the object of interest will be received by the sensor almost unchanged, independent of environmental conditions such as ambient temperature or humidity.
