SFA30
Formaldehyde sensor with ultra low cross-sensitivity to ethanol
The SFA30 is a digital formaldehyde sensor designed for easy integration into air purifiers, demand-controlled ventilation systems, or indoor air quality monitors.
Based on the electrochemical measurement principle, the SFA30 offers excellent performance with a uniquely low cross-sensitivity to other VOCs. The integrated humidity and temperature sensor provides accurate readings and enables a fully temperature/humidity compensated and factory calibrated formaldehyde concentration output in ppb. Selectable digital UART and I²C interface options, a standard electrical connector, and versatile mounting options make the integration easy. Relying on our experience in environmental sensing and a patented electrochemical cell with anti-dry technology, the SFA30 offers excellent long-term stability and 6 years service lifetime. On top of that, the SFA30 is compliant with the relevant healthy building standards RESET® and WELL Building Standard™.
Download our free article on formaldehyde here.
Specification
| Formaldehyde | |||
|---|---|---|---|
| Measurement range 0 - 1000 | 0 - 1000 | ppb | |
| Accuracy ±20 ppb or ±20% m.v. | ±20 ppb or ±20% m.v. | ||
| Sensor output Formaldehyde concentration in ppb, RH, T | Formaldehyde concentration in ppb, RH, T | ||
| Cross sensitivity to ethanol < 0.5 | < 0.5 | % | |
| Limit of detection < 20 | < 20 | ppb | |
| Lifetime > 6 | > 6 | years |
| Humidity | |||
|---|---|---|---|
| Typ. relative humidity accuracy 2.5 | 2.5 | %RH | |
| Operating relative humidity range 10 - 90 | 10 - 90 | %RH |
| Generic | |||
|---|---|---|---|
| Supply voltage 3.15 - 5.5 | 3.15 - 5.5 | V | |
| Average supply current 1000 | 1000 | uA | |
| Max. supply current 5000 | 5000 | uA | |
| Operating temperature range [°C] 0 - 40 | 0 - 40 | °C | |
| Interfaces I²C, UART | I²C, UART | ||
| Size (LxWxH) 46 x 24 x 5.5 | 46 x 24 x 5.5 | mm |
| Temperature | |||
|---|---|---|---|
| Typ. temperature accuracy 0.2 | 0.2 | °C |
