An upgraded industry product based on the original infrared spectrophotometer. This product is mainly used for the analysis and testing of dust in production environments such as power and coal industries, including silicon dust, coal dust, boiler dust, asbestos dust, cement dust, welding fumes, etc,Its characteristic is a high content of free silica in the dust,The dispersion of dust is also relatively high,Most of them are respiratory dust,Therefore, the harm to personnel exposed to dust is significant. Based on the physical and chemical properties of productive dust, concentration in the air, amount entering the human body, and the affected area,The harm caused also varies,Mainly including respiratory diseases such as rhinitis, pharyngitis, tracheitis, bronchitis, etc. The Chinese government, as well as the power and coal industry sectors, attach great importance to dust prevention work,therefore,Strengthening the detection of free silica content in dust is a very important and urgent task. Previous detection of free silica content in dust,All adopt the "Method for Determination of Dust in Workplace Air"(GB5748—85)required“Pyrophosphate gravimetric method”,This method has a series of problems such as complex operation steps, various types of reagents used, long detection cycle, poor accuracy, and strict laboratory conditions requirements,Difficult to meet the requirements of on-site batch testing.

Main data processing functions:
Data processing function - easy processing of analysis results, including peak calibration, peak area integration, baseline calibration, and other operations
Quickly create and print experimental reports
Standard file format - Maintain experimental results for easy sharing and processing
Spectral file storage and printing
Spectral background baseline memory Spectral background baseline correction Spectral data accumulation operation%TgiveABSconvert
Performance indicators of free silica detector in dust:
Wavelength range:2.5-25um(Wave number range:4000-400cm-1）
wavenumber accuracy: ≤ ±2 cm-1 (2000-400 cm-1)

≤±4cm-1 (4000-2000 cm-1)

Full wavelength scanning The slit program is adjustable in five levels
stray≤0.5%T(4000-650cm-1)；

≤1%T(650-400cm-1)；

Transmittance accuracy:≤±0.2%T(Excluding noise level)
Grind the sample to a particle size smaller than8Lm
Built in high-end computer, self providedWindows xpOperating system, Chinese operating platform,USB2.0interface
characteristic:
It has the characteristics of fast, sensitive, and ability to distinguish three crystal forms of free silica,And due to its low equipment investment and operation .
The advantages of simplicity and suitability for automatic analysis have been widely applied.
The sturdy design and practical exterior dimensions are suitable for various analysis and testing environments.
Excellent sensitivity and signal-to-noise ratio .
Detecting components, signal amplifiers, and24 The analog-to-digital converters are integrated together to directly output digital signals (analog signals experience significant attenuation and are susceptible to interference during transmission, while digital signals can avoid interference))Further reduce electronic noise;24 The bit to analog/digital converter enhances the weak signal detection capability of the system by an order of magnitude.
Using high-performance computers for instrument control and data processing,WINDWOSFull Chinese operation interface
The moving parts composed of electromagnetic drive devices and precision mechanical guides have improved the requirements for the usage environment
The high-intensity light source adopts a spherical reflection device, which can obtain uniform and stable infrared radiation.