Basic knowledge and common terms of the hottest se

2022-08-24
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Sensor basic knowledge and common terms

1 Sensor: a device or device that can sense the specified measured signal and convert it into usable output signal according to a certain law. It usually consists of sensitive elements and conversion elements

① sensitive element refers to the part of the sensor that can be measured directly (or in response)

② conversion element refers to the part of the north side of the sensor that can be sensed (or responded) by the more sensitive element and converted into the electrical signal that is transmitted and (at the same time, it has the new enhanced characteristics of multi-directional force and multi-layer structure) measured

③ when the output is a specified standard signal, it is called a transmitter

2. Measurement range: the range compatibility of the measured value within the allowable error limit is mainly solved by adding various additives

3. Measuring range: algebraic difference between the upper limit value and the lower limit value of the measuring range

4. Accuracy: the consistency between the measured result and the true value

5. Repeatability: under all the following conditions, the consistency between the results of multiple continuous measurements of the same measured quantity:

the same measurement method:

the same observer:

the same measurement instrument:

the same place:

the same use conditions:

repetition in a short period of time

6. Resolution: the smallest change that can be detected by the sensor within the specified measurement range

7. Threshold: the smallest measured change that can produce measurable change at the output of the sensor

8. Zero position: the state that minimizes the absolute value of the output, such as the equilibrium state

9. Excitation: external energy (voltage or current) applied to make the sensor work normally

10. Maximum excitation: the maximum value of excitation voltage or current that can be applied to the sensor under urban conditions

11. Input impedance: the impedance measured at the input end of the sensor when the output end is short circuited

12. Output: the electric quantity generated by the sensor and measured as a function of the external

13. Output impedance: the impedance measured at the output end of the sensor when the input end is short circuited

14. Zero output: the output of the sensor when the added is measured to be zero under urban conditions

15. Hysteresis: the maximum difference in the output when the measured value increases and decreases within the specified range

16. Late: the time delay of the output signal change relative to the input signal change

17. Drift: in a certain time interval, the sensor output is finally measured irrelevant and unnecessary change

18. Zero drift: the change of zero output under specified time interval and indoor conditions

work together 19 Sensitivity: the ratio of the increment of sensor output to the corresponding increment of input

20. Sensitivity drift: the change in the slope of the calibration curve caused by the change in sensitivity

21. Thermal sensitivity drift: sensitivity drift caused by sensitivity change

22. Thermal zero drift: zero drift caused by ambient temperature changes

23. Linearity: the degree to which the calibration curve is consistent with a specified limit

24. Nonlinearity: the degree to which the calibration curve deviates from a specified straight line

25. Long term stability: the sensor can still maintain the ability not to exceed the allowable error within the specified time

26. Inherent probability: when there is no resistance, the probability of free (without external force) oscillation of the sensor

27. Response: the characteristic of the measured change during output

28. Compensation temperature range: the temperature range compensated by keeping the sensor in the range and zero balance within the specified limit

29. Creep: the change of output within a specified time when the environmental conditions of the measured machine are kept constant

30. Insulation resistance: unless otherwise specified, it refers to the resistance value measured between the parts of the sensor with specified insulation and many people crying when the specified DC voltage is applied at room temperature

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