The function of halogen online infrared moisture analyzer

The function of halogen online infrared moisture analyzer

Measurement principle of online infrared moisture meter
Water molecules exhibit strong absorption characteristics towards certain specific wavelengths of infrared light. When these specific wavelengths of infrared light are used to irradiate materials, the water contained in the material will absorb some of the energy of the infrared light. The more water there is, the more it absorbs. Therefore, the decrease in reflected light can be measured to calculate the moisture content of the material.

Due to the varying absorption and scattering characteristics of materials towards infrared radiation, if only the absorption wavelength of water is used, factors such as the surface state, color, and structure of the material can interfere with moisture measurement; To this end, the multi wavelength method is used, which includes one wavelength strongly absorbed by water (measurement wavelength) and two wavelengths less strongly absorbed by water (reference wavelength). By detecting and calculating the energy ratio of the reflected light at these multiple wavelengths, interference from other factors on moisture measurement can be eliminated.

The infrared light emitted by the light source of the online infrared moisture analyzer passes through the filter on the splitter and is reflected by the mirror towards the measured material; The different filters on the distribution disc only allow infrared light of a certain wavelength to pass through. The distribution disc rotates at a high speed under the drive of the motor, so that the infrared light of the measurement wavelength and the reference wavelength alternately shine towards the measured material; Some of these infrared lights are absorbed by the material, while others are reflected by the concave condenser lens, which is received by the photoelectric sensor and converted into electrical signals. These signals are then processed by subsequent circuits to calculate the moisture content of the material.

The function of halogen online infrared moisture analyzer

◆ Stable and low drift
Measure the changes in emitted light while measuring reflected light, automatically compensate for the drift of optoelectronic devices, and improve performance stability; Integrated optical, mechanical and electrical components, probe with built-in microprocessor, nearby correction of electrical drift, measurement and processing
◆ Easy to operate and intuitive
It can perform verification, calibration, setting, diagnosis and other operations, with simple operation and no need for training
◆ Eliminate steam interference and be competent in harsh environments
Some supporting devices and technologies enable the moisture meter to work reliably in strong steam; Some internal cooling structures eliminate the harm of non purified gas sources to optical components, and are capable of working in harsh environments with added safety
Black material is fully applicable
The design ensures sensitivity, signal-to-noise ratio, and sampling rate, making it easy to measure the moisture content of black materials such as coal powder and sintered mixtures
◆ Quality and standards
Domestic and international joint design and manufacturing of optoelectronic devices; stable quality