Gas sensor definition:
It is a sensitive device capable of sensing a certain gas and its concentration in the environment. It converts information about the type of gas and its concentration into electrical signals. According to the strength of these electrical signals, it can be obtained in the environment with the gas to be tested. Information about the situation.
Gas sensor performance requirements:
High sensitivity to the gas being measured
Insensitive to coexisting gases or substances other than the gas being measured
Stable performance and good repeatability
Good dynamic characteristics and fast response to detection signals
long lasting
Low manufacturing cost, easy to use and maintain, etc.
Main parameters and characteristics of gas sensor:
Sensitivity: sensitivity to gases
Response time: response speed to the measured gas concentration
Selectivity: refers to the ability of a gas sensor to distinguish the gas species under the condition of coexistence of multiple gases: when the measured gas concentration is constant, if other conditions change, the gas sensor output characteristics remain within a specified time. Constant ability temperature characteristics: characteristics of gas sensor sensitivity as a function of temperature. Humidity characteristics: characteristics of gas sensor sensitivity as a function of environmental humidity. Power supply voltage characteristics: characteristics of gas sensor sensitivity as a function of supply voltage Timeliness and interchangeability: The time to reflect the stability of the gas sensing characteristics of the component is the timeliness; the consistency of the gas sensing characteristics between the components of the same model reflects its interchangeability.
Water-cooled capacitor is supercapacitor is a capacitor with a capacity of thousands of farads.According to the principle of capacitor, capacitance depends on the distance between the electrode and electrode surface area, in order to get such a large capacitance, as far as possible to narrow the distance between the super capacitor electrode, electrode surface area increased, therefore, through the theory of electric double layer and porous activated carbon electrode.
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