Product Description:

YJJ ME3-CH2O Electrochemical Formaldehyde CH2O Sensor Civil Industrial Fields

Features:

I. Core Parameters (Official Standards) Table

Parameter item Specification Explanation

Detected gas Formaldehyde (CH₂O / HCHO) One type of carcinogen, the main pollution source in indoor decoration

Detection principle Tri-electrode electrochemistry When gas is oxidized, an electric current is generated, and the concentration is proportional to the current

Measurement range 0 - 10 ppm Covers the national standard indoor safety limit (0.10 ppm)

Overload capacity 100 ppm Does not damage in short-term overload

Sensitivity (11.8 ± 6) μA/ppm Approximately 11.8 microamps of current is generated per ppm of formaldehyde

Resolution 0.1 ppm Accurately detects minute changes in formaldehyde concentration

Response time (T90) ≤ 90 seconds The response speed reaches 90% of the concentration

Operating temperature -20℃ ~ +40℃ Suitable for indoor / industrial conventional environments

Operating humidity 15 - 90% RH (no condensation) Resistant to humidity, suitable for most scenarios

Service life 2 years in air General service life of electrochemical sensors

Size φ20 × 16.6 mm Standard 4-series industrial size, easy to replace

Bias voltage 300 mV Requires an external power supply to provide bias voltage

Load resistance 10 Ω Recommended external resistance value

II. Main applications

Core positioning: Precise monitoring and safety alarm of formaldehyde concentration in indoor / industrial environments

Civilian / Household (most extensive)

Household formaldehyde detector: Self-testing of formaldehyde in new houses, new cars, and furniture

Air purifier / new air conditioner: Linked control, automatic purification when concentration exceeds the limit

Smart home: Indoor air quality (IAQ) monitoring system

Industrial / commercial safety

Textile / furniture / sheet metal factory: Monitoring of volatile gases in production workshops

Chemical / coating industry: Leak detection in raw material and finished product storage areas

Environmental protection / quality inspection institutions: Sampling inspections of environmental air and indoor air quality

Hospitals / schools / offices: Safety monitoring of public indoor spaces

Device form

Portable handheld leak detector

Fixed wall-mounted / pipeline detector

Multi-in-one air quality monitoring module

Specifications: