How do the "sensors" of "desktop electronic scales" and "electronic desk scales" distinguish between good and bad?
September 10, 2023
An important part of the three major components of the desktop electronic scale is the sensor. The sensor is also a core sensing component of the scale. Its small changes can determine the performance of the scale and the value displayed by the instrument. At the same time, the sensor is also a comparison among electronic scales. Parts that are easily damaged.
A sensor without good protection measures is easy to be damaged due to impact, overload, electrical discharge, aging, high temperature, corrosion, etc., and the damage of the sensor will cause different weighing indicators to make different Error message. The error tips suggested by each brand are different.
The quality of the sensor largely determines the performance of the electronic scale. So how do we determine whether the load cell is good or bad? Weighing industry work industry believes that we can start from the following aspects:
1. Safety limit load and limit overload of electronic scale: The maximum axial load that can be applied to the load cell. At this time, the load cell will not produce permanent drift beyond the specified value in the performance characteristics. When the work exceeds this value, the sensor will be damaged. 2. The measuring range of the load cell: the range of the measured mass, the measurement result will not exceed the maximum allowable error within this range. 3. The scale value of the weighing sensor of the electronic scale: the size of one part after the measuring range i of the load cell is divided into equal parts 4. The scale value of the weighing sensor verification: used in the weighing sensor test for accurate classification The graduation value of the load cell expressed in mass units. 5. Load cell output: the measured quality can be measured by the load cell conversion. 6. The minimum verification division value of the weighing sensor of the electronic scale: The minimum verification division value of the weighing sensor measurement range that can be divided. 7. Non-linearity: characterizes the accuracy of the correspondence between the output voltage signal of the sensor and the load, specifically the deviation of the calibration curve of the load cell process from the theoretical straight line. 8. Excitation voltage: the normal voltage required for the sensor to work, generally 5 ~ 10v9. Insulation resistance: the insulation resistance is equivalent to a resistance in series with the resistance between the sensor bridge and the ground. Resistance 10 between beam and strain gauge. Sensitivity: The ratio between the output increment and the added load increment. When sensors from different manufacturers are used together, attention must be paid to the consistency of sensitivity. 11. Creep: Under the constant load, all environmental conditions and other variables remain constant, the output of the load cell changes with time. Correspondingly, there are creep recovery parameters.
If you start from the above aspects, I believe you can pick a good sensor and buy a good electronic scale!
Thank you very much for your attention to our products. If you have more questions about the sensor, please leave a message to the editor. We believe that with your suggestions and help, we will do better!
