Explanation of Weighing Sensor Parameters

Explanation of Weighing Sensor Parameters

A weighing sensor is an important component that converts pressure into electrical signals. When choosing a weighing sensor, there are many parameters that can be explained below.

1. Rated capacity: the upper limit of the weighing range provided by the manufacturer;
2. Sensitivity: The difference in sensor output signal between rated load and no load. Due to the fact that the output signal of the weighing sensor is related to the applied excitation voltage, the unit of rated output is expressed in mV/V and referred to as sensitivity;
3. Sensitivity tolerance: The percentage of the difference between the actual stable output of the sensor and the corresponding nominal rated output to the nominal rated output;
4. Nonlinear: The maximum deviation between the straight line determined by the output value of the empty load and the output value at rated load, and the measured curve with increased load, as a percentage of the rated output value;
5. Lag tolerance: The percentage of the maximum difference between the loading and unloading output values at the same load point to the rated output value, gradually loaded from no load to the rated load and then gradually unloaded;
6. Repetitive error: Under the same environmental conditions, the sensor is repeatedly loaded to the rated load and unloaded. The percentage of the maximum difference in output values at the same load point during the loading process to the rated output value;
7. Creep: The percentage of the change in the output of a weighing sensor over time relative to the rated output, under constant load and other testing conditions;
8. Zero point output: The percentage of the sensor's output value to the rated output when unloaded under recommended voltage excitation.
9. Insulation impedance: The direct current impedance value between the circuit load elastic body of the sensor.
10. Input impedance: The impedance value measured from the input terminal of the power supply when the signal output terminal is open and the sensor is not loaded;

11. Output impedance: The impedance measured from the signal output terminal when the power excitation input terminal is short circuited and the sensor is not loaded;
12. Temperature compensation range: Within this temperature range, the rated output and zero balance of the sensor are tightly compensated so as not to exceed the specified range.
13. Zero temperature effect: Zero equilibrium changes caused by changes in ambient temperature. It is generally expressed as the percentage of zero equilibrium change caused by a temperature change of 10K to the rated output.
14. Impact of rated output temperature: The change in rated output caused by changes in ambient temperature is generally expressed as a percentage of the change in rated output caused by every 10K change in temperature.
15. Temperature range of use: The sensor will not produce harmful changes in any of its performance parameters within this temperature range.
16. Load cell output: The measurable amount obtained by converting the measured (mass) through the load cell.
17. Scale division value of weighing sensor: The size of one of the measured ranges of the weighing sensor after being divided equally.
18. Scale division value for weighing sensor calibration: The scale division value of the weighing sensor expressed in units of mass used in weighing sensor testing for accuracy grading.
19. Minimum calibration division value of weighing sensor: The minimum calibration division value at which the measuring range of the weighing sensor can be calibrated.
20. Minimum static load: The minimum value of mass that can be applied to a weighing sensor without exceeding the maximum allowable error.
21. Maximum weighing: The maximum value of mass that can be applied to a weighing sensor without exceeding the maximum allowable error.
22. Nonlinear: The deviation between the calibration curve of the weighing sensor process and the theoretical straight line.

23. Lag error: the maximum difference between the output readings of the weighing sensor when the same level of load is applied; One of them is the process reading starting from the minimum static load, and the other is the return reading starting from the maximum weighing.
24. Creep: The variation of the full load output of a weighing sensor over time under constant load, all environmental conditions, and other variables.
25. Minimum static load output recovery value: the difference between the minimum static load output of the weighing sensor measured before and after the load is applied.
26. Repetitive error: The difference between the output readings of a weighing sensor obtained from consecutive experiments under the same load and environmental conditions.
27. The effect of temperature on minimum static load output: The variation between minimum static load outputs caused by changes in ambient temperature.
28. The effect of temperature on output sensitivity: The change in output sensitivity caused by changes in ambient temperature.
29. Measurement range of weighing sensor: The range of the measured (mass) value, within which the maximum allowable error will not be exceeded at the end of the measurement

30. Safety limit load: The maximum load that can be applied to the weighing sensor, at which point the weighing sensor will not drift beyond the specified value in terms of performance characteristics.
31. The impact of temperature and humidity on minimum static load output: The change in minimum static load output caused by changes in temperature and humidity.
32. The influence of temperature and humidity on output sensitivity: The change in output sensitivity caused by changes in temperature and humidity.
33. Minimum load: The mass value closest to the minimum static load of the weighing sensor that the force generating device can achieve.