What are the main technical parameters of infrared thermometer?

In layman's terms, a thermal imaging camera is the transformation of the invisible infrared energy emitted by an object into a visible thermal image. The different colors on the top of the thermal image represent the different temperatures of the object being measured. By viewing the thermal image, the overall temperature distribution of the measured target can be observed, and the heating situation of the target can be studied, which provides a basis for judgment for work and research.

The thermal imaging cameras we commonly use are passive thermal imaging tests and are very safe. According to the atmospheric window, infrared rays are divided into near-infrared, short-wave infrared, medium-wave infrared, and long-wave infrared. Long-wave infrared can be observed through air, not through walls and glass, and has the advantages of all-weather imaging, non-contact temperature measurement, and smoke penetration.

If you want to know more about the principles, products and case introductions related to infrared thermal imaging cameras, or want engineers to demonstrate for free, you can find Shanghai Thermal Imaging Technology Co., Ltd., its brand "Fotric Fei Infrastructure".

Fotric has been focusing on the field of infrared thermal imaging professional temperature measurement for ten years and continues to innovate, with handheld, first-class, body temperature screening and other product lines readily available, 100+ rich product models to choose from, and 1000+ rich application cases in various subdivided industries.

The company is a high-tech enterprise, headquartered in Shanghai, China, while having offices in Beijing, Wuxi, Nanjing, Jinan, Xi'an, and distributors in more than 30 countries and regions such as North America, Europe, South Korea, Singapore, Australia, etc., and has passed the international ISO:9001 quality system certification, the United States FCC certification, and the European CE certification. At the same time, the company is committed to the intelligent innovation of thermal imaging technology, and its products are widely used in electric power, industry, steel, petrochemical, electronics, scientific research and other industries, and have been recognized by 10,000+ industrial customers such as State Grid, Sinopec, Baosteel, Huaneng, Huadian, SAIC, etc., and the strength of manufacturers is trustworthy.

Red closed air thermal imaging cameras are generally spectrophotometer scanning imaging systems and non-scanning imaging systems. The opto-mechanical scanning imaging system uses a unit or multivariate (the number of elements has even more) photoconductive or photovoltaic infrared detectors, and the speed is slow when using the unit detector, mainly because the slow frame response time is not fast enough, and the multi-array detector can be made into a high-speed real-time thermal imager. Non-scanning imaging cameras, such as the focal plane thermal imager for array gaze imaging launched in recent years, are a new generation of thermal imaging devices, which are much better than optomechanical scanning thermal imaging cameras in terms of performance, and have a tendency to gradually replace disturbed optical scanning thermal imaging cameras.

Its key technology is that the detector is composed of a monolithic integrated circuit, the entire field of view of the measured target is focused on it, and the image is clearer, more convenient to use, the instrument is very small and lightweight, and at the same time has the functions of automatic focusing image freezing, continuous magnification, point temperature, line temperature, isothermal and voice annotation image, the instrument uses a PC card, and the storage capacity can be up to 500 images.

The main parameters of infrared thermometer are distance coefficient, temperature measurement range, measurement accuracy, response wavelength, aiming method, etc. As shown below: Model TI213 Measuring range -25 -1200 Measurement accuracy 1% of reading value or 1 Repeatability or Distance factor 80:

1 Display resolution 1 or 1 Display mode 4-digit LCD function Maximum value Minimum value Average value Temperature difference value, Display hold, undervoltage indication, upper and lower limit alarm Emissivity Response time Less than 200ms Aiming method Coaxial laser aiming Working band 8-14 m Environmental grade IP65 Ambient temperature -10 --60 Relative humidity 10% RH -90%RH Non-condensing Power supply 9V battery Instrument volume 185 170 50 Instrument weight 500g

The parameters of the general handheld thermometer include product name, brand model, weight, measuring distance, measurement accuracy, measurement time, power supply voltage, service life, and most importantly temperature measurement range.

Range, accuracy, D:S value, adjustable emissivity, repeatability, response time, ambient temperature, IP rating.

The smoother the reflectance of the instrument's probe and rangefinder, the greater the error.

To put it simply, it is related to the following factors:

1. The accuracy of the infrared thermometer itself; The accuracy of Fluke infrared thermometers is generally in .

2. Temperature measurement environment, whether there is dust or fog;

3. Whether the measured object is within the infrared field of view;

4. Whether the emissivity of the measured object is consistent with the setting of the instrument;

It is necessary to look at the size of the target and the distance coefficient of the thermometer, the distance from the measurement distance = the minimum diameter of the target * the distance coefficient, and also pay attention to the provisions of the minimum measurement distance.

The infrared thermometer book is the temperature of the surface, but the measurement is to know the emissivity of the measured target, and then set it in the thermometer menu. If the ambient temperature is very high, add an air purge, and a water cooling jacket. If the environment is very bad, use dual wavelength.

The distance coefficient is determined by the ratio of d:s, i.e., the ratio of the distance d between the thermometer probe and the target to the diameter of the target to be measured. If the thermometer has to be installed far away from the target due to environmental conditions, and small targets are to be measured, a thermometer with high optical resolution should be chosen.

The higher the optical resolution, i.e. the higher the d:s ratio, the higher the cost of the thermometer.