Automobile Exhaust Detection Filters

The transmission smoke meter is an instrument that measures the degree of absorption of certain wavelengths by different substances based on the different characteristic absorption spectra of radiation in the visible light region and performs quantitative analysis. It allows a certain amount of incident light to pass through a certain length of the measured smoke column, and uses the intensity of the transmitted light detected by the light detector to assess the pollution degree of motor vehicle exhaust.

The transmission smoke meter is mainly composed of a light source system, a collimation system, a smoke sample chamber, a detector system, and sampler accessories. When working, the smoke sample chamber is filled with the exhaust gas of the motor vehicle to be tested, and then a certain amount of light is transmitted from the light source through the collimation system through the smoke column of the smoke sample chamber. The light attenuated by the smoke column generates a stable output voltage on the detection system, and the voltage is determined by the pollution degree of the measured smoke column. After the voltage signal is converted into the expression form specified by the regulations, it is output by the display system or printing system to complete the detection.

At present, the gas detection filters produced by BORISUN mainly cover the following bands:

4260nm infrared narrowband filter carbon dioxide CO filter

3470nm infrared narrowband filter automobile exhaust detection

4650nm infrared narrowband filter carbon monoxide CO detection

5050nm infrared narrowband filter carbon monoxide CO detection reference wavelength

7350nm infrared narrowband filter sulfur dioxide SO2 detection