Gas analyzer

7MB2001-0FA00-1DB1

7MB2001-0FA00-1DB1

Gas analyzerCore technical principles

1. ‌Thermal conductivity type‌

• Based on the differences in thermal conductivity of different gases, measure the thermal conductivity of mixed gases to calculate the component content;

• Applicable gases: H ₂, NH ∝, CO ₂, SO ₂, etc., with high accuracy and good stability.

2. ‌electrochemical formula‌

• Using gas chemical reactions to induce changes in ion quantity or current, and adopting a membrane structure to enhance selectivity;

• Types: Fixed potential electrolysis (specific potential electrolysis gas), Galvani cell (diffusion gas electrolysis).

3. ‌Infrared absorption spectroscopy (NDIR/UV-DOAS)‌

• Gas selectively absorbs specific wavelengths of infrared/ultraviolet light and calculates concentration through absorption intensity;

• Advantages: High sensitivity, fast response, suitable for gas detection such as CO ₂, CH ₄, SO ₂, etc
  

4. ‌Laser Technology (TDLAS)‌

• Based on Lambert Beer's law, semiconductor laser scans gas absorption spectra to detect harmonic components;

• Features: Strong anti-interference ability, suitable for high temperature and high pressure environments (such as desulfurization and denitrification processes).

5. ‌Other Technologies‌

• Thermomagnetic (oxygen detection), ultrasonic (flow assisted), helium ionization (ppb level impurity analysis).

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