Analog load cells have slightly different sensitivities when shipped from the factory. Moreover, each sensor has different aging degrees during use, which aggravates the transmission problem. The sensitivity of the sensor is inconsistent, so that the effect of the same measured object. The output signal (data) of each sensor is different. digital scale. The heavy sensor has a unique mark. After multiple sensors are assembled in parallel. The weighing instrument checks the status of each sensor. Adjust by weighing instrument. Adjust the sensor coefficient to compensate the output signal of the load cell. 

   Different types of electronic truck scales were calibrated. Before the calibration, it was found that the accuracy performance of analog electronic truck scales and digital electronic truck scales was quite different. According to JJG539-2016 Digital Indicating Scale Calibration Regulations, by comparing the pre-calibration data of different types of electronic truck scales, in many test links such as zero point, offset load, weighing point, repeatability, etc., the accuracy of digital electronic truck scales is higher than that of analog car. 

  The performance differences of different types of weighing sensors have a great impact on the cost-effectiveness of measurement, the stability and accuracy of truck scales. The advantage of analog load cells over digital sensors is that the price per unit is lower, and the initial investment is. The investment cost is relatively small, but the maintenance cost in the middle and later stages is high, the service life of the weighing sensor is short, the stability performance is poor, and the measurement accuracy is difficult to maintain barrier. For long-term considerations, it is recommended to adopt digital truck scales.

The combined use of different probes can not only improve the efficiency of online flaw detection, but also improve the quality control of offline flaw detection. Combining the different characteristics of the three probes, selecting B or C probe for online inspection can increase the inspection speed and ensure that defects are not missed. When defects occur during online inspection, you can use A probe for re-inspection to accurately quantify the defects and determine whether they are qualified. For offline flaw detection, choose A probe to accurately quantify and determine defects, which can not only reduce errors but
Judgment, and can accurately determine some steel plates with defects that do not exceed the standard, thus improving economic benefits for enterprises.