Technical indicators are the objective basis for characterizing the performance of a product. Understanding the technical indicators helps to select and use the product correctly. The technical indicators of sensors are divided into two categories: static indicators and dynamic indicators. Due to the dynamic characteristics of sensors such as frequency response and step response, as well as static characteristics such as drift, repeatability, accuracy, sensitivity, resolution, linearity, etc., changes and fluctuations in external factors will inevitably cause small stability in the sensor's own characteristics, which will have a significant impact on its practical application. This requires us to focus on the working principle and structure of the sensor.

There are five technical indicators for sensors, specifically introduced as follows:


The accuracy of the sensor can only meet the accuracy requirements of the entire measurement system, and there is no need to choose too high. In this way, cheap and simple Atlas air compressor accessories can be selected among many sensors that meet the same measurement purpose.


Linear range

The linear range of a sensor refers to the range where the output is proportional to the input. The wider the linear range of the sensor, the larger its range and can ensure a certain measurement accuracy. When the required measurement accuracy is relatively low, within a certain range, sensors with small nonlinear errors can be approximated as linear, which will bring great convenience to measurement.


When the sensitivity is high, the value of the output signal corresponding to the measured change is relatively large, which is beneficial for signal processing. The sensitivity of the sensor is high, and external noise unrelated to the measurement is also easily mixed in, which can be amplified by the amplification system and affect the measurement accuracy.

The sensitivity of sensors is directional. When the measured quantity is unidirectional and requires high directionality, sensors with low sensitivity in other directions should be selected; If the measured vector is a multidimensional vector, the smaller the cross sensitivity of the sensor, the better.


The factors that affect the long-term stability of sensors are not only the structure of the sensor itself, but also the environment in which the sensor is used. Sensors must have strong environmental adaptability. Before selecting a sensor, an investigation should be conducted into its usage environment, and appropriate sensors should be selected based on the specific usage environment, or appropriate measures should be taken to reduce the impact of the environment.

Frequency response

The frequency response characteristics of the sensor determine the frequency range to be measured and must remain undistorted within the allowable frequency range. In fact, the response of sensors always has a certain delay, and we hope that the shorter the delay time, the better. The higher the frequency response of the sensor, the wider the measurable signal frequency range.

I believe that by reading the above content, everyone has a preliminary understanding of the performance indicators of sensors. At the same time, I hope that everyone can summarize well during the learning process, so as to continuously improve their professional level.