G22-CH2O formaldehyde gas sensor

Focusing on the research and development and manufacturing of high-tech sensors

  • Address:

    11th Floor No.48 Xinyu Rr,Xinqiao Community,Xinqiao Street,Bao'an ,Shenzhen,China

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    +86 13430946183

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G22-CH2O formaldehyde gas sensor

  • Hidden thread, 4-hole screw fixing is more convenient

  • Good repeatability, low zero drift, fast response time, strong anti-interference

  • Power supply voltage: DC5-24V, output signal: V- high and low level output, switching value NPN

  • The shell is made of PC V0 fireproof material, which is safer and more stable

Service hotline
+86 13430946183

Product Details
Technical Parameters
Technical Parameters
User's Guide


Solid-state electrochemical sensing technology is a new technology in the field of electrochemical detection. This technology is based on electrochemical principles, using proton membranes instead of traditional electrolytes, outputting signals according to the electrochemical reactions of different gases, and accurately measuring gas concentrations through signal quantities.

Formaldehyde, with the chemical formula CH2O or HCHO, is a colorless gas with a strong pungent odor. Soluble in alcohol and ether. Acute formaldehyde poisoning is a systemic disease mainly caused by contact with high concentration formaldehyde vapor, which mainly damages the eyes and respiratory system. When its concentration reaches 0.08-0.09mg/m3 in every cubic meter of air, children will have slight asthma. When the indoor air reaches 0.1mg/m3, there will be peculiar smell and discomfort; when it reaches 0.5mg/m3, it can irritate the eyes and cause tears; when it reaches 0.6mg/m3, it can cause throat discomfort or pain. When the concentration is higher, it can cause nausea and vomiting, cough, chest tightness, asthma and even pulmonary edema; when it reaches 30mg/m3, it will cause death immediately.

Application range:

Detection of formaldehyde in commercial and civil fields.

Portable formaldehyde detection instrument.

Fixed point formaldehyde detector.

item name


input voltage

DC 5V~24V

load current


quiescent current

<10 mA

detect gas





2%output value

threshold value


max. load


response time

(T90)  <15S

Zero output 20°C)


sample mode

diffusion type

output method



working conditions

item name


pressure range

1±0. 1 standard atmospheric pressure

expected service life

3  years (in the air)

storage temp.

+ 10℃~ ﹢ 30

work temp.

continuous operate

- 10℃~ ﹢ 50

discontinuous operation

- 10℃~ ﹢ 55

working humidity

15%RH~ 90%RH  


2% signal value/month



physical properties

item name



L*W*H = 30.35 * 47.4 * 47.4MM


50cm    (±10MM)  (can be customed for bulk orders)

shell material

black PC V0 fireproof

safety certificate



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