SS21F8-LE (HCHO)

Electrochemical Formaldehyde Sensor (0–10ppm)

DESCRIPTION

The SS21F8-LE is an electrochemical sensor designed for precise measurement of formaldehyde (HCHO) within the range of 0–10 ppm. With ethanol cross-sensitivity suppressed to below 3%, it offers enhanced accuracy compared to conventional HCHO sensors. It also exhibits negligible cross-interference to ammonia, CO, and acetaldehyde. Featuring a signal output of 60 ± 20 nA/ppm and a high resolution of ≤0.01 ppm, the SS21F8-LE is optimized for high-sensitivity detection. It has a typical operating life of over 24 months in air and performs reliably in a temperature range of -10℃ to +40℃. This sensor is ideal for air purifiers, indoor air quality monitoring systems (IAQ), and portable detectors.

KEY FEATURES

- Measuring Range: 0–10 ppm (Max overload: 20 ppm)
- Output Signal: 60 ± 20 nA / ppm
- Response Time: T90 < 30 sec
- Resolution: ≤0.01 ppm (typical)
- Service Life: ≥24 months (in air)
- Operating Temperature: -10℃ ~ +40℃
- Ethanol Cross-sensitivity: ≤3%
- Other Gas Interference: NH₃, CO, acetaldehyde: 0%