This formaldehyde sensor is designed to meet a range of specifications and is available with or without a module. The module offers RS485 or TTL communication interface options, allowing customers to select the best fit for their needs.

Specification

Features

• Engineered in accordance with electrochemical principles, it is more compact and precise than comparable items on the market.
• The use of high-precision, dense integrated circuits ensures the reliable, interference-free processing of signals, offering enhanced stability.
• It is designed with anti-interference, short circuit, and reverse polarity protection.High-sensitivity gas detection probe with stable signal and high accuracy.

Cross-Interference Gas Table

Dimension (unit: mm)

Basic Test Circuit

Application

Tips：6 precautions when using CH2O gas sensors

1. The CH2O gas sensor pins must be connected through a PCB socket and should not be bent; soldering may cause damage.
2. When storing the sensor, the working electrode and the reference electrode should be in a short-circuited state.
3. The sensor should be kept away from organic solvents, alcohol, paints, oils, and high-concentration gases, including silicone and other adhesives.
4. The sensor should not be used for extended periods in environments containing corrosive gases.
5. Calibration with the target gas is recommended; cross-sensitivity may vary by up to 30%. Calibration with cross-sensitive gases (e.g. carbon monoxide, acetic acid, ethylene, methanol, etc.) does not guarantee measurement accuracy.
6. It is not advised to test the formaldehyde gas sensor using non-standard methods, such as submerging it in concentrated ammonia, spraying smoke towards the sensor, or bringing the sensor close to alcohol.