The precision of the pressure sensor computing

by:Thermistor-Mov     2020-04-14
Static characteristics of pressure sensor is refers to the input signal to static, between the sensor's output and input has relationship to each other. When input and output had nothing to do with the time, so the relationship between them, namely the static characteristic of sensor available does not contain a time variable algebra equation, or by typing the abscissa, the corresponding output as ordinate and draw to describe the characteristic curve. Characterization of sensor static characteristics of the main parameters: linearity, sensitivity, hysteresis, repeatability, drift, etc. ( 1) Linearity: refers to the sensor output and input the actual relationship between the curve of the degree of deviating from the fitting line. Defined as within the scope of the full range of actual characteristic curve and the fitting line between the ratio of the deviation and the full scale output value. ( 2) Sensitivity: sensitivity is an important indicator of pressure sensor static characteristic. Defined as the output increment and cause the increment of the ratio of the corresponding input increment. Use S sensitivity. ( 3) Hysteresis: sensors in the input quantity from small to large, Positive trip) And input from big to small, The trip) Change during the period of the input and output characteristic curve overlapping phenomenon not become sluggish. For the same size of the input signal, positive trip output signal of sensor size is not equal, the difference is called retardation value. ( 4) Repeatability: repeatability refers to the sensor in the input quantity in the same direction as the range continuous change, the characteristic curve of the degree of inconsistency. ( 5) Drift: refers to the sensor drift under the condition of invariable input, sensor output change over time, this phenomenon is called drift. Causes of drift has two aspects: one is the structural parameters of the sensor itself; The second is the surrounding environment ( Such as temperature, humidity, etc. ) 。 Dear customer: hello, our company is a strong technical force of the development of high quality, for the majority of users with high-quality products and complete solutions and the best technical services company. The main products are pt100, pt100 temperature sensor, humidity sensor, etc. This enterprise uphold sincerity, with the purpose of the implementation of quality and with enterprising societe generale, with a firmer step climb the new peak unceasingly, contribute to national automation industry, welcome new and old customers to rest assured the choose and buy the desired products. We will serve you wholeheartedly!
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