Product Description
The WH-N type formaldehyde gas sensor utilizes a micro fuel cell principle for detection. When formaldehyde gas is present, gas molecules rapidly reach the core detection unit through natural diffusion and concentration polarization. An oxidation reaction occurs at the anode, while oxygen undergoes a reduction reaction at the cathode, forming a closed-loop reaction. The generated current is directly proportional to the formaldehyde gas concentration, allowing for accurate quantification of formaldehyde levels. This sensor features a pioneering solid electrolyte for fuel cells, ensuring safety, reliability, and a long lifespan. It boasts excellent anti-interference capabilities, unaffected by low-concentration interfering gases. As a passive device, it requires no external excitation during reaction, consuming zero power, making it ideal for portable instruments and battery-powered applications. Typical applications include smart homes, smartphones, wearable devices, smart buildings, air purifiers, handheld detectors, and air conditioners.
Product Attributes
- Brand: WH-N
- Origin: Not specified
- Material: Not specified
- Color: Not specified
- Certifications: Not specified
Technical Specifications
| Project | Technical Parameters |
|---|---|
| Principle | Micro fuel cell |
| Range | 0-1ppm |
| Maximum Overload | 5ppm |
| Sensitivity | 200100 (nA/ppm) |
| Response Time | <120 seconds |
| Baseline Range (20) | 30ppb |
| Repeatability | 2% |
| Output Linearity | Linear |
| Working Temperature Range | -4070 |
| Working Pressure Range | Standard atmospheric pressure10% |
| Working Humidity Range | 1090 (non-condensing) |
| Service Life | 6 years (normal use) |
| Warranty Period | 12 months |
| Weight | 3g |
| Cross-Interference (Interfering Gas: Concentration (ppm) -> Formaldehyde Concentration (ppm)) | Alcohol: 2 -> 0.04; Ammonia: 10 -> 0; Benzene: 10 -> 0; Acetic Acid: 10 -> 0; Carbon Monoxide: 1000 -> 6; Hydrogen: 1000 -> 6 |
Precautions
- Avoid contact with organic solvents and corrosive gases.
- Do not store in dusty, dirty, or oxygen-deficient environments.
- Do not expose to high concentrations of the measured gas.
- Avoid excessive impact or vibration.
- Unauthorized disassembly will void the warranty.
2504101957_ProSense-WH-N_C45385001.pdf
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