What is gas pressure sensor?
Air Gas Pressure Sensor is a detection device that can sense the measured gas pressure and convert the detected information into electronic signals or other required forms of information output according to certain rules to meet the requirements of information transmission, processing, storage, display, recording and control. It is the primary link in achieving automated detection and control.
The working principle of the air gas pressure sensor is mainly based on the following steps:
1.Elastic element:
The sensor contains an elastic element, usually a thin film or metal spring, that can deform with changes in external pressure.
2.Pressure conduction:
The gas pressure is conducted to the elastic element through the air inlet or pressure hole of the sensor. When the gas pressure increases, it exerts a force on the elastic element, causing deformation on the element.
3.Deformation measurement:
A resistor or piezoelectric element is usually built into the sensor. When the elastic element deforms, it causes changes in the resistance, capacitance, or voltage of the resistor or piezoelectric element.
4.Signal conversion:
The output signal of the sensor needs to interact with electronic devices, so a signal conversion circuit is usually used to convert the sensor output into standard electrical signals, such as voltage or current.
5.Data processing:
The converted signal can be further processed and interpreted by a microprocessor or analog circuit to obtain data related to gas pressure.
The main characteristics of a air gas pressure sensor include the rated pressure range, maximum pressure range, damage pressure, linearity, pressure hysteresis, and temperature range. Among them, the rated pressure range is the pressure range that meets the standard specified value, the maximum pressure range refers to the maximum pressure that the sensor can withstand for a long time, the damage pressure refers to the maximum pressure that does not damage the sensor element or sensor housing, linearity describes the maximum deviation of the linear relationship between sensor output and pressure, pressure hysteresis reflects the characteristics of the output difference when the sensor approaches a certain pressure, and the temperature range involves the compensation temperature range and working temperature range.
The air pressure sensor is widely used in many fields, including but not limited to pneumatic control systems, petrochemicals, environmental protection, air compression, industrial process detection and control, building automation, furnace pressure control, power station operation inspection, etc. In addition, due to its ability to detect extremely subtle changes in barometric pressure, it can also be used in various applications such as car or home burglar alarms, vehicle GPS, medical pulse detection, lie detectors for security departments, and alarming when a person falls into a pool.
In general, the air gas pressure sensor is an important detection tool that converts gas pressure into electrical signals to achieve accurate measurement and monitoring of gas pressure, providing key detection and control methods for various fields.
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