Are all oxygen sensors the same

Air contains a variety of gases, among which oxygen plays an important role in daily life and industrial production. The level of oxygen concentration is closely related to human health. Generally, people detect oxygen concentration through O2 sensor. Currently, the main common oxygen sensors on the market mainly include the following types:

1. Electrochemical lead-containing oxygen sensor: Contains an anode lead block, and oxygen will undergo a redox reaction on the working electrode;

2. Electrochemical lead-free oxygen sensor: It adopts the principle of fuel cell and does not contain lead inside;

3. Fluorescent oxygen sensor: an oxygen sensor that measures the partial pressure of oxygen in the environment based on the principle of fluorescence quenching;

4. Ultrasonic oxygen sensor: Calculation and measurement based on the physical characteristics of different propagation speeds of ultrasonic waves in oxygen of different concentrations and different flow rates.

Different types of oxygen sensors work on different principles, but each has its own advantages and disadvantages. Depending on their respective properties, they can be used in various industries such as automotive, health and medicine, industrial, food and beverage packaging, and pharmaceuticals.

Electrochemical Lead Oxygen Sensor

When working, the lead on the sensor anode will undergo an oxidation reaction to form lead oxide, and the anode will be gradually consumed. Its service life is generally 2-3 years. At the same time, temperature has a greater impact on its chemical process, so it needs to rely on temperature compensation. Only then can reliable readings be provided under prevailing environmental conditions.

It can achieve a full-scale linear output of 0-100%, with an accuracy of ±1%. It is self-powered and has strong anti-interference ability, meeting the stringent requirements of medical equipment such as ventilators, oxygen concentrators, and anesthesia machines.

Electrochemical lead-free oxygen sensor

Lead-free design, environmentally friendly, compliant with RoHS standards, will not affect the life due to chemical reaction consumption, the service life is generally greater than 5 years, the range of the linear output is 0~30%, it is more suitable for coal mines, steel, petrochemicals, etc. Industrial field.

Fluorescent oxygen sensor

Non-depleting oxygen-sensitive materials are used. The product does not consume oxygen and has a service life of more than 6 years. The product does not contain lead or other toxic materials and is not affected by air pressure and other gas interference. It can directly output ambient air pressure, oxygen partial pressure and oxygen The value of the concentration, the oxygen concentration measurement range is 0-25%, and can be used in various environments such as ventilators, medical care, laboratories, agriculture, oxygen detection, portable equipment, fire prevention, etc.

Ultrasonic oxygen sensor

It can detect the concentration and flow of oxygen at the same time. Compared with traditional electrochemical oxygen sensors, it has a longer service life. The detection range of oxygen concentration in the air is very wide, reaching 0-100%. It can be used in industrial oxygen production equipment, Oxygen concentration detection equipment used in mining environments, oxygen concentration detection in food storage and production equipment, etc.; can also be used in medical equipment such as oxygen concentrators. The detection range of oxygen concentration in the oxygen concentrator is 21%~95.6%, which is economical Practical and ideal for oxygen concentrator OEM.