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INFRARED METHANE (CH4 ) GAS SENSOR

INFRARED METHANE (CH4 ) GAS SENSOR
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INFRARED METHANE (CH4 ) GAS SENSOR Wuhan Cubic Optoelectronics Wuhan Cubic Optoelectronics Co. ， Ltd Co. ， Ltd Add:Fenghuang No.3 Road, Fenghuang Industrial ： Fenghuang No.3 Road, Fenghuang ADD Park,Eastlake Hi-tech Industrial Zone,Wuhan 430205, China DevelopmentPark,Eastlake Hi-tech Development Zone, Tel: Wuhan, 430205, China 86-27-81628831 TEL ： +86-27-87405251 Fax: 86-27-87405251 FAX ： +86-27-87401159 www. GasSensor.com.cn info@gassenso

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Working principle  CH4 gas is composed of different types of atoms have absorption spectrum in infrared range. Absorption intensity abides by Lamber-Beer’s Law. Basic working principle of NDIR sensor is as below, Inlet detector Light spectral filter  Basic mathematical model ： A majority of both organic and inorganic polyatomic gas have specific absorptive wavelength in infrared region. It observes Lambert-Beer Law formula I ＝ I0e-kpl when infrared light is coming through. Light absorption intensity “i” can be described as i=I0-I= I0 (1- e- kpl). I0: intensity of incoming ray. I:...

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♦ NDIR CH4 gas sensor adopts advanced non-dispersive infrared technology and qualified raw materials and parts, which can be integrated in safety and alarming devices, able to be used for environmental monitoring, gas drainage monitoring; ♦ The infrared methane sensor is complied with Ex-proof ExiallCT4. The certificate No. is GYB101873

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■ NDIR gas sensor ■ High sensitive and fast response ■ Immune from "poisoning" and long life ■ Self-compensation of temperature and reliable linearity output ■ Choice of output format — voltage and RS232 ■ Good sensitivity and selectivity to CH4 ■ Replacement of compatible pellistor based instruments to NDIR CH4

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APPLICATION CH4 sensor can be integrated in such safety and alarming devices such as CH4 gas detector and transmitter which are widely used in various occasions with flammable and explosion hazard gas. · Mine, metallurgy, liquefied gas station, spray paint, petroleum, fuel gas transport etc ·Used in gas leakage detecting equipment in family and industry, are suitable for CH4, LNG, avoid the noise of alcohol and cooking fumes and cigarette smoke. · Gas concentration meter, detect concentration of CH4 in air · Gasoline, ketone, benzene etc organic solvent. · Combustible gas leaking alarm or...

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Digital output : TTL electrical level voltage signal is 0 or 2.5v , pay attention to level switching when connecting external circuit, computer circuit is illustrated below : Baud rate : 9600bps Data bit : 8 ; Stop bit : 1 A. If CPU is powered by 2.5 - 3.3V, CH4 gas sensor can be connected directly and make communication. Note: RXD of CH4 gas sensor is connected to TXD of CPU. TXD of CH4 gas sensor is connected to RXD of CPU. B. If CPU is 5V, please change PWL. Here is for reference:

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