Winsen ZE08B-CH2O Electrochemical CH2O Detection Module

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Working Principle

Description

The ZE08B-CH2O module uses an electrochemical principle to detect formaldehyde (CH2O) in the air. This method involves a chemical reaction that generates an electrical current proportional to the concentration of CH2O, allowing for high selectivity and stability. The module also includes a built-in temperature sensor for temperature compensation.

Sensor Types

Electrochemical

Dos And Donts

Donts

  • Avoid Condensation: Operate the sensor in environments with humidity levels between 15%RH and 90%RH without condensation to prevent sensor damage.,
  • Exceed Temperature Limits: Do not use the sensor outside the operating temperature range of 0°C to 50°C to ensure accurate functioning.,
  • Expose To High Concentrations: Avoid exposing the sensor to CH2O concentrations above 1.6ppm to prevent sensor saturation or damage.

Dos

  • Ensure Proper Ventilation: Keep the sensor in well-ventilated areas to ensure accurate readings.,
  • Follow Voltage Guidelines: Operate the sensor within the recommended voltage range of 3.7 to 5.5 volts to prevent damage.,
  • Use Uart Interface: Utilize the UART output for digital communication, ensuring it operates at 3V electrical level.
Limits

Electrical Specifications

  • Voltage Range: 3.7 to 5.5 volts,
  • Output Type: UART output (3V Electrical Level)

Operating Conditions

  • Temperature Range: 0°C to 50°C,
  • Humidity Range: 15%RH to 90%RH (No condensation),
  • Ch2o Concentration Limit: 0 to 1.6ppm
How To Connect

Data Connection

  • Description: Connect the UART output to a compatible microcontroller or computer system for data communication, ensuring the logic level is compatible at 3V.

Power Connection

  • Description: Connect the sensor's power lines to a power source that supplies a voltage between 3.7 and 5.5 volts.
Dimensions

Physical Size

7 × 4 × 3 cm

Weight

0.01 kg