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Principle and introduction of formaldehyde sensor

2020-06-17 Source: admin

Product Name: formaldehyde sensor


Low cost, long life, low power consumption, good long-term stability
Measurement range: 0-5ppm
Temperature range: - 20-50 ° C
Resolution: ≥ 0.02ppm
Typical application: formaldehyde detector air purifier

Working principle of electrochemical fuel cell formaldehyde gas sensor

The sensor contains a conventional two electrode fuel cell sensor. The working electrode releases electrons to the counter electrode through the external circuit, and consumes with the reduction of oxygen at the end of the counting electrode. The internal circuit has the ion current in the electrolyte to achieve. yes Air quality sensor One of them.

Count parameters

measuring range

  0-5ppm

Pressure range

Up to 10 ATM

life expectancy

5 years

Humidity range

15% - 90% (non condensation)

output signal

  150nA/ppm

Response time (T90)

50 seconds (at 20 ℃)

resolving power

Better than 0.02ppm

Long term drift

< 10% / year

Lower limit of measurement

  0.03ppm

Repeatability

   <±2%

temperature range

- 20 to 50 ° C

Guarantee period

2 years



The seven characteristics of electrochemical fuel cell formaldehyde gas sensor (air quality sensor) are as follows
1. Low cost; 2. Long life; 3. Fast response; 4. Power supply; 5. Stability; 6. Withstand voltage; 7. Low detection limit;
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