Application of NH3 gas sensor

Background:

NH3 gas sensor is an important component of air quality monitoring equipment. It is mainly used to detect the concentration of NH3 in the air and provide feedback information to environmental protection departments and enterprises. NH3 gas sensor mainly consists of a sensing element, a reference electrode, and a counter electrode. The sensing element is mainly composed of a resistance film, a thin-film metal layer, and other materials. The reference electrode is made of a high-purity copper sheet, and the counter electrode is made of a stainless steel sheet. When NH3 gas enters the sensing element, the resistance of the sensing element will change due to the change of NH3 concentration. The change in resistance of the sensing element can be measured by the reference electrode and the counter electrode. The NH3 gas sensor is a non-contact type gas sensor, which has high accuracy and stability. It can be used in the measurement of NH3, NO2, NO, CO, CH4, etc.

The operation principle of NH3 gas sensor is mainly based on the law of resistance. The NH3 gas sensor uses a resistance film as the sensing element, and the change in resistance of the sensing element is caused by the change of NH3 concentration. When NH3 gas molecules enter the sensing element, the film resistance of the sensing element will change, and the change in resistance can be measured. The principle of the reference electrode and the counter electrode is also based on the law of resistance. The reference electrode and the counter electrode are both made of a high-purity copper sheet, and the change in electrical characteristics of the electrode is also caused by the change of NH3 concentration.

In addition, NH3 gas sensor is also equipped with some safety measures. For example, the NH3 gas sensor usually has a break device to ensure that the NH3 gas sensor can be separated in case of accident. The equipment interface of NH3 gas sensor is also specified, which ensures that the connection interface between the equipment and the NH3 gas sensor is stable and reliable.

To sum up:

In summary, NH3 gas sensor is an important component of air quality monitoring equipment, which can be used to detect the concentration of NH3 in the air and provide feedback information to environmental protection departments and enterprises. The operation principle of NH3 gas sensor is mainly based on the law of resistance, and the sensing element is mainly composed of a resistance film. The NH3 gas sensor is equipped with some safety measures to ensure its stability and accuracy.