Infrared thermometer

Well-known brands can be found by simply searching for the top 10 brands on Baidu; there are also many such brands in China. Basic theory: In 1672, it was discovered that sunlight (white light) is composed of various colors of light. Meanwhile, Newton reached the famous conclusion that monochromatic light has simpler properties than white light. A spectroscope is used to break down sunlight (white light) into various monochromatic colors such as red, orange, yellow, green, cyan, blue, and violet. In 1800, the British physicist F. W. Huxley discovered infrared radiation while studying various colors of light from a thermal perspective. While studying the heat produced by various colored lights, he deliberately blocked the only window in the dark room with a dark panel, and made a rectangular hole in that panel; a prism was placed inside that hole. When sunlight passes through a prism, it is separated into colored bands of light, and a thermometer is used to measure the amount of heat contained in each color within those bands. To compare with the ambient temperature, Huxley used several thermometers placed near the colored light bands as references to measure the surrounding temperature. During the experiment, he accidentally discovered a strange phenomenon: a thermometer placed outside the red light band of the light strip showed a higher reading than those of other thermometers in the room. After repeated experiments, this so-called high-heat zone with the highest heat level always lies at the edge of the light band, outside the red light. Thus, he announced that in addition to visible light, the radiation emitted by the sun contains another type of radiation that is invisible to the human eye; this invisible radiation lies beyond red light and is called infrared light. Infrared radiation is a type of electromagnetic wave that shares the same nature as radio waves and visible light. The discovery of infrared radiation represented a major leap in humanity’s understanding of nature, opening up a whole new and vast field for research, application, and development in the field of infrared technology. The wavelength of infrared radiation ranges from 0.76 to 100 μm. Based on this wavelength range, it can be divided into four categories: near-infrared, mid-infrared, far-infrared, and extreme far-infrared. It occupies the region between radio waves and visible light in the continuous spectrum of electromagnetic waves. Infrared radiation is one of the most widespread types of electromagnetic radiation in nature. It arises because every object, under normal conditions, experiences random movements of its molecules and atoms, which result in the emission of thermal infrared energy. The more intense the movement of these molecules and atoms, the greater the amount of energy emitted; conversely, the less intense the movement, the less energy is emitted. Objects with a temperature above absolute zero emit infrared radiation due to the motion of their molecules. After the power signal emitted by an object is converted into an electrical signal using an infrared detector, the output signal from the imaging device can accurately reflect the spatial distribution of the surface temperature of the scanned object. After being processed by an electronic system, this signal is displayed on a screen, resulting in a thermal image corresponding to the heat distribution on the object’s surface. By using this method, it is possible to achieve long-distance thermal imaging of the target, measure its temperature, and conduct analysis and evaluation.

Infrared thermometer manufacturers – Xi’an Gutai Sensors. Feel free to contact us for inquiries. Multiple series including portable, online, and blackbody standard sources, with a temperature measurement range covering -50～3300℃. It is primarily used in equipment failure diagnosis and maintenance, security assurance, and process control, helping users improve product quality, production efficiency, and save energy. In addition, with the transformation and upgrading of the global industry in recent years, while continuing to provide reliable and stable temperature measurement solutions for traditional markets, we are also focusing on developing new markets in industries such as carbon fiber, lightweight materials, and semiconductors. Temperature measurement devices are used for temperature monitoring during the carbon fiber manufacturing process. For more information on their application, please contact us at: 400-997-1413

Hello, is there stirring inside the device, and will it affect the use of the temperature sensor?

Factors that have an impact can cause fluctuations in temperature measurement; if the liquid level is unstable and experiences large fluctuations, it is possible that the temperature measurements will also be highly fluctuating**

According to you, infrared thermometers are suitable for use with stationary materials. Reactor vessels have agitators, and foam can form as well; therefore, this thermometer is not suitable for use

The medium temperature requirement is not high, so surface-mounted thermistors can be used; if higher requirements exist, rotary equipment can be avoided and plug-in thermistors can be employed

The one in use now is the insert type, but due to stirring it cannot be inserted below the liquid surface, resulting in inaccurate readings. The material is weakly acidic

An infrared thermometer consists of an optical system, a photodetector, a signal amplifier, as well as components for signal processing and display/output. The optical system focuses the infrared radiation energy from the targets within its field of view; this infrared energy is concentrated on the photodetector and converted into corresponding electrical signals, which are then transformed into the temperature value of the target being measured.

Is our reactor with a stirrer suitable?

The last edit to this post was made by 955559 on 2018-12-25 at 12:27. For temperature measurement in a reactor, if infrared temperature sensing is used, it needs to be done from the outside