This HCHO sensor adopts a wall-mounted installation method, which is suitable for use in a variety of places. A temperature and humidity module can be added inside the shell to realize the joint detection of temperature, humidity, and formaldehyde.

It is an electrochemical formaldehyde sensor. It has high accuracy, fast response speed, and long service life. The output resolution of the formaldehyde sensor can reach 0.01ppm, and it can realize 24-hour online monitoring.

CH2O sensor datasheets

Power supply: 10~30V DC
Measure range: 0-5ppm
Precision: ±5%FS(@1ppm,25℃,50%RH)
Resolution: 0.01ppm
Temp&Humidi measure range: -40℃~+80℃, 0~100%RH
Temp&Humidi accuracy: ±0.5℃, ±3%RH
Operating temperature: -20~50℃
Working humidity: 15~90%RH No condensation
Pressure range: 91~110Kpa
Stability (months): ≤7% signal value/year
Response time: ≤35S
Repeatability ≤2% output value
Formaldehyde zero drift: ≤±0.5ppm
Service life: ≥24 months

Place of origin: China

Electrochemical CH2O sensor features

1. Range 0-5ppm, other ranges can also be customized.
2. The measurement accuracy is high, and the repeatability can reach within 2%.
3. Optional high-quality OLED display, the value can be viewed directly on-site, and can be displayed clearly at night.
4. The on-site power supply adopts a 10~30V DC wide-voltage power supply, which can adapt to a variety of on-site DC power supplies.
5. The product adopts a wall-mounted waterproof shell, which is easy to install and has a high degree of protection that can be used in harsh on-site environments.

FAQ - Electrochemical formaldehyde sensor

Why measure formaldehyde?

Formaldehyde is a toxic gas. If you inhale excessive formaldehyde, it will seriously irritate the human respiratory tract, and even cause breathing difficulties and cause death. Even if a small amount of formaldehyde is inhaled for a long time, it will have certain effects on the respiratory tract and may cause nausea Symptoms such as pain, and even cause chronic respiratory diseases, chest tightness, and other diseases. High concentrations of formaldehyde can cause serious damage to human organs and even cause cancer. Long-term living in an environment with formaldehyde gas will also cause great harm to human internal organs.

What are the measuring principles of formaldehyde sensors?

The sensors used to detect formaldehyde include electrochemical sensors, optical sensors, and photochemical sensors. The structure of the electrochemical sensor is relatively simple, and the cost is relatively low. Among them, high-quality products have stable performance, and the measurement range and resolution can meet the requirements of indoor environment detection. However, the disadvantage is that there are many interfering substances and it is consumed due to the irreversible chemical reaction between the electrolyte and the measured formaldehyde gas, so its working life is generally relatively short. Optical sensors are relatively expensive and bulky, so they are not suitable for online real-time analysis, which limits their widespread use. Although the photochemical sensor improves the selectivity, the activity of the enzyme and other factors cause the sensor to be unstable and lack practicality. Moreover, the price of the general formaldehyde gas sensor is too high to be popularized.

Where to use formaldehyde sensor?

Formaldehyde sensors are mainly used in industries or equipment that require long-term online monitoring of formaldehyde concentration, such as smart homes, air cleaners, and air conditioners. In addition, the formaldehyde sensor is suitable for places where further determination of formaldehyde gas is required, such as the petrochemical industry, organic chemical storage places, chemical laboratories, paint and coating industries, etc.

What is a formaldehyde sensor?

The formaldehyde sensor is used by people to detect formaldehyde gas and is specially designed for gas detection.

What is the repeatability of the formaldehyde sensor?

Within the range that we can currently test, the repeatability is currently less than 2% of the signal.