ME2-CH2O-16×15 Formaldehyde Sensor

  • • Detection Gas: HCHO, CH2O, Formaldehyde
  • • Detection Range: 0-10 ppm CH2O
  • • Application: Detecting CH2O in civilian, industrial area, and environmental protection

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  • Principle Introduction
Principle Introduction:
Winsen Electronics manufacture and provide CH2O gas sensor, formaldehyde sensor for air quality monitoring.
ME2-CH2O-16×15 electrochemical sensor detect gas concentration by measuring current based on the electrochemical principle, which utilizes the electrochemical oxidation process of target gas on the working electrode inside the electrolytic cell, the current produced in electrochemical reaction of the target gas are in direct proportion with its concentration while following Faraday law, then concentration of the gas could be get by measuring value of current.
Applications :
Detecting CH2O in residential occasion and environmental protection areas
Technical parameters :
Item Parameter
Detection gas Formaldehyde (CH2O)
Measurement Range 0-5 ppm
Max detecting concentration 20 ppm
Sensitivity (0.45±0.15)µA/ppm
Resolution ratio ≤0.02ppm
Response time(T90) ≤60S
Load resistance(recommended) 100Ω
Repeatability <2﹪ output value
Output Linearity linear
Zero drift(-20℃~40℃) ≤0.2ppm
Humidity Range 15﹪~90﹪RH
Temperature Range -20℃~50℃
Pressure range normal atmosphere ± 10%
Anticipated using life 2 years(in air)

Reference Circuit :

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