Detailed description of the performance parameters of the pressure sensor

Pressure sensors are the most commonly used sensors in industrial practice. They are widely used in various industrial automation environments and involve water conservancy and hydropower, railway transportation, intelligent buildings, production automation, aerospace, military, petrochemical, oil wells, electric power, ships, and machine tools. , pipelines and many other industries.

1. Rated pressure range The rated pressure range is the pressure range that meets the specified value of the standard, that is, between the highest and lowest temperature, the sensor output meets the pressure range of the specified operating characteristics. In practical applications, the pressure measured by the sensor is within this range. .

2. Maximum pressure range The maximum pressure range refers to the maximum pressure that the sensor can withstand for a long time, and does not cause permanent changes in the output characteristics. In particular, semiconductor pressure sensors generally reduce the rated pressure range significantly to improve the linearity and temperature characteristics. Therefore, it will not be damaged even if it is used continuously above the rated pressure. The general maximum pressure is 2-3 times the highest rated pressure.

3. Damaged pressure Damaged pressure refers to the maximum pressure that can be processed on the sensor without damaging the sensor element or the sensor housing.

4. Linearity The linearity of a pressure sensor is the maximum deviation of the linear relationship between the sensor output and the pressure within the working pressure range.

5. The pressure hysteresis is the difference between the sensor output when the minimum working pressure and the maximum working pressure approach a certain pressure at room temperature and within the working pressure range.

6. Temperature range The temperature range of the pressure sensor is divided into the compensation temperature range and the operating temperature range. The compensation temperature range is due to the application of temperature compensation, and the accuracy is within the temperature range within the rated range. The operating temperature range is the temperature that ensures the pressure sensor can work normally. range.