ZE08-CH2O High-precision Electrochemical Formaldehyde Gas Sensor For Indoor Air Quality (IAQ) Monitors Smart Home Devices

1. Product Overview:

The ZE08-CH2O is a high-precision electrochemical formaldehyde (CH₂O, also known as formaldehyde) gas sensor, specifically engineered for real-time detection of formaldehyde concentrations in indoor and outdoor air. It integrates advanced electrochemical sensing technology to deliver stable, selective, and low-power performance, making it ideal for applications requiring accurate formaldehyde monitoring—such as indoor air quality (IAQ) assessment and safety systems.

2. Key Features:

• High Selectivity: Utilizes an electrochemical sensing cell optimized for CH₂O, effectively minimizing interference from common background gases (e.g., CO, CO₂, ethanol, methane, and volatile organic compounds/VOCs like benzene).
• Low Detection Limit: Capable of detecting trace formaldehyde concentrations, meeting strict indoor air quality monitoring requirements.
• Linear Output: Provides a linear analog or digital output signal proportional to CH₂O concentration, simplifying data acquisition and processing for microcontrollers (MCUs) or embedded systems.
• Low Power Consumption: Designed for battery-powered devices (e.g., portable IAQ monitors) with minimal current draw.
• Compact Form Factor: Small SMD or DIP package enables easy integration into compact devices (e.g., smart air purifiers, wearable sensors).
• Long-Term Stability: Industrial-grade components and advanced encapsulation technology ensure consistent performance and extended service life under normal operating conditions.
• Fast Response & Recovery: Rapidly responds to changes in CH₂O concentration and returns to baseline quickly after the gas is removed.

3. Typical Applications:

• Indoor Air Quality (IAQ) Monitors: Residential, office, or school IAQ devices to detect formaldehyde from furniture, paints, or adhesives.
• Smart Home Devices: Integration with smart air purifiers, thermostats, or safety hubs to trigger alerts/ventilation when CH₂O exceeds safe levels.
• Portable Detectors: Handheld devices for homeowners, inspectors, or renters to test indoor formaldehyde concentrations.
• Industrial Monitoring: Low-concentration CH₂O detection in furniture manufacturing, textile printing, or chemical plants (where formaldehyde is used as a raw material).
• Medical & Commercial Spaces: Monitoring in hospitals, hotels, or childcare centers to ensure compliance with health and safety standards.

4. Installation & Usage Notes:

1. Avoid Contamination: Do not install the sensor in areas with heavy dust, oil mist, or corrosive gases (e.g., Cl₂, H₂S, ammonia), as these will damage the sensing cell and cause false readings.
2. Condensation Prevention: Ensure the operating environment remains non-condensing. Use a moisture barrier or ventilation if installing in high-humidity areas (e.g., bathrooms, kitchens).
3. Calibration: Always calibrate the sensor before first use and at the recommended interval (6–12 months) using a certified formaldehyde standard gas (e.g., 0.5 ppm CH₂O in air). Uncalibrated sensors may drift over time.
4. Signal Filtering: For analog output, add a low-pass filter (e.g., 100 Hz RC filter) to reduce electrical noise and stabilize readings.
5. Power Supply Stability: Use a regulated DC power supply to avoid voltage fluctuations, which can cause output instability.
6. Preheating Time: Allow the sensor to preheat for 3–5 minutes after power-on to ensure stable baseline readings before taking measurements.

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