The application of infrared thermal imager

Abstract: the application of infrared thermal imager information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Infrared thermal imager is the use of some special materials for infrared radiant energy produced some features of the change of physical quantity, and then put the variables into electrical signals, after modulation into image and temperature measurement. These special materials are: hgcdte, antimony. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the application of infrared thermal imager article details. Infrared thermal imager is the use of some special materials for infrared radiant energy produced some features of the change of physical quantity, and then put the variables into electrical signals, after modulation into image and temperature measurement. These special materials are: hgcdte, antimony, indium, platinum silicon, vanadium oxide, silicon doping ( Or poly) And so on. On the market of the so-called & other; Refrigeration & throughout; And & other The refrigeration & throughout; And in fact refers to the presence of refrigerating unit, in fact, even & other; The refrigeration & throughout; Infrared thermal imager, it also has the so-called element to probe temperature such as air conditioning package & ndash; — Otherwise, the probe itself at room temperature, its thermal noise background will make its temperature resolving power is greatly decreased. I personally believe: in terms of the current technology, refrigeration type infrared thermal imager overall performance is better than that of uncooled infrared thermal imager. Itself is not launch infrared, it just passively absorb. It has a double meaning: *, the characteristics and nature of any object of external radiation infrared signal characteristics, make it a high value for military equipment; Second, considering the range of the infrared attenuation in the air, as a high sensitivity detector meets the requirements of material is high! Especially consider [ The infrared thermal imager] The interference of itself also has infrared radiation. Therefore, from [ The infrared thermal imager] That day on, the birth of its technical level of confidentiality and its price is very high. Here, we also can not talk about the difficulty of the production technology of infrared detector and yield. We know that: all temperature in absolute zero - nature 273. 15° C above object, due to its molecular thermal motion are constantly into the surrounding space radiation, including infrared wavelengths, electromagnetic wave, its spectral range is wide. Molecules and atoms movement more intense, the greater the radiation energy, the smaller the vice radiation energy. And at this stage [ The infrared thermal imager] Have some respond to a short infrared spectral range. For example: 3 ~ 5 & micro; M or 8 ~ 14 & micro; M, the so-called & other; The atmospheric window & throughout; — — Atmosphere, cloud, such as absorption of visible light and near infrared, but for 3 ~ 5 micron and 8 ~ 14 microns thermal infrared is less affected. Therefore, the two band called thermal infrared & other; The atmospheric window & throughout; 。 At the same time, the object to emit radiation intensity depends on the target temperature and radiation characteristics of surface materials. The same material under different conditions, the radiation of infrared energy outward ability is different, this kind of ability and the illusion of blackbody is the ratio of the material under the temperature emissivity. ( Is a kind of ideal blackbody radiator, it absorbs all the wavelengths of the radiation energy, no energy reflection and through its surface emissivity is 1. ) It should be noted that does not exist in the nature real boldface. That is to say, the infrared thermal imager can be observed objects, depending on the temperature resolution and space resolution of infrared thermal imager and infrared radiation intensity and area on the surface of the object to be tested, we can even sketchily understood as: the temperature resolution is the ability of zui little discernible difference in temperature, the spatial resolution is the ability to shows that the temperature difference. Temperature resolution in NETD experimental conditions at present stage, the environment temperature of 30 ℃ when the probe zui little discernible difference in temperature, rather than the thermal imager temperature resolution of the machine. Because the background noise of the detector itself, if is 0. 6 ℃, after the subsequent processing brought about by the superposition of background noise must be higher than 0. 6 ℃, as to how many, can achieve that depends on each subsequent design of electronic circuit parts manufacturers and processing capacity. Worth mentioning here is that the temperature resolution and temperature measuring precision are two different things. The first is the ability of zui little discernible difference in temperature; The latter is repeated measurements of mean temperature difference. Just contact with infrared thermal imager friends often confuse the two concepts. Spatial resolution cannot be equated with viewing Angle, viewing Angle is refers to the lens, the spatial resolution refers to the actual infrared thermal imager resolving power of the engine, it is associated with detector, circuit, lens, is a composite index, in mrad, 1. 0 mrad one over one thousand radian. Here, but also the introduction of pixels. We usually see infrared manufacturers at home and abroad on technical parameters in the product: 320 & times; 240160报; 120120报; & 120 or even 382 times; 288640报; 480, which generally refers to probe the focus plane array number, can be understood as: the number of cell detector, that is, of course, the more the better.

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