UGT-N4-CH4 Miniature Infrared Methane Gas Sensor

UGT-N4-CH4 Miniature Infrared Methane Gas Sensor

product overview

The UGT-N4-CH4 miniature infrared methane sensor is a sensor produced using advanced international technology and components for measuring methane gas concentration in the environment; It has the advantages of easy operation, long service life, accurate measurement, and reliable work, meeting the different requirements of industrial sites and laboratory measurements. It is widely used in environmental monitoring, gas alarms, petroleum and petrochemical, steel and coal, scientific research institutions, building construction, ventilation systems, medical and health care, underground pipeline networks and other places.

Performance characteristics

·-Wide temperature working range of 40~+70 ℃;

·Multiple range options, full range linearization, digital output;

·Abnormal alarm output such as high humidity alarm;

·Built in temperature compensation, good output linearity;

·Compatible with both digital and analog signal output modes;

·There will be no "poisoning" phenomenon of catalytic sensors;

·Self calibration is optional;

·Fast response speed and good stability;

Working principle

Methane is a molecule composed of heterogeneous atoms with an absorption spectrum in the infrared wavelength range, and its absorption intensity follows the Lambert Beer law. When a light wave corresponding to the characteristic absorption wavelength of a certain gas passes through the measured gas, its intensity will significantly decrease, and the degree of intensity attenuation is related to the concentration of the gas. The relationship between the two follows the Lambert Beer law.

The basic mathematical model is as follows:

Most organic and inorganic polyatomic molecular gases have specific absorption wavelengths in the infrared region. When infrared light passes through, the transmitted light intensity of these gas molecules at specific wavelengths. It can be expressed by Lambert Beer's law: I=I0e-kpl ， The absorbed light intensity i can be expressed as: i=I0-I= I0 (1-e-kpl) 。 In the formula, I0 is the incident light intensity; I is the transmitted light intensity; L is the thickness of the gas medium, p is the gas concentration, and k is the absorption coefficient.