Shopping Cart

Principle of Infrared Gas Analyzer

The principle of infrared gas analyzer is to use infrared to analyze the body. It is based on the difference in the concentration of the components to be analyzed and the absorbed radiant energy. The remaining radiant energy makes the temperature rise in the detector different, and the pressure on the two sides of the moving film is different, thereby generating an electrical signal of the capacitive detector. In this way, the concentration of the component to be analyzed can be measured indirectly.  1. Beer’s Law The infrared gas analyzer is based on Beer’s Law. It is assumed that the measured gas is an infinitely thin plane. Infrared light of intensity k penetrates it vertically, and the amount of energy attenuation is: I = I0e-KCL (Bill’s Law) where: I–the intensity of the radiation absorbed by the medium; I0–the intensity of the radiation before the infrared passes through the medium; K–the absorption coefficient of the component to be analyzed for the radiation band; C–the gas concentration of the component to be analyzed; L–the length of the gas chamber (the thickness of the measured gas layer) for a manufactured infrared gas analyzer The measurement component has been determined, that is, the absorption coefficient k of the radiation component to be analyzed is constant; the infrared light source is determined, that is, the radiation intensity I0 before infrared passes through the medium is constant; From Beer’s law, it can be seen that by measuring the attenuation I of the radiant energy, the concentration C of the component to be analyzed can be determined.

Welcome new and old customers to call or online consultation.

View more oxygen analyzer at

Leave a Reply

Your email address will not be published.

Free Worldwide shipping

On all orders above $50

Easy 30 days returns

30 days money back guarantee

International Warranty

Offered in the country of usage

100% Secure Checkout

PayPal / MasterCard / Visa