Methods of reducing errors in explosion-proof forklift scales

Methods of reducing errors in explosion-proof forklift scales

1. Discrimination error:

Discrimination reflects the ability of electronic weighbridges to respond to small changes in load. The purpose of discriminative testing is to test the connection and friction of the scale structure. Therefore, friction and stress in the mechanical connection are the main sources of discriminating error. 

In addition, because the discrimination is aimed at small changes, the discrimination of the load cell and the weighing instrument also has a greater influence on the discrimination error.

2. Weighing error:

The linear change of the sensor weighing, the zero drift and the rubbing of the weighing platform are the direct causes of weighing errors. 

The sensor weighs linearly. Due to the influence of temperature difference, impact force, floating dust, etc., the load of the sensor is not in a linear relationship with its 

corresponding output voltage, which makes the weighing linearity of the electronic platform scale sensor change greatly. 

Sometimes the error of some weighing points is relatively large, and the linear calibration of weighing is carried out, that is, the weighing of the electronic platform scale is calibrated in sections, and the relative error of the weighing will be greatly reduced. Zero drift. Electronic floor scales are affected by different sizes and multiple reciprocating impact loads during use. 

The force of the sensor is very complicated, which eventually causes the contact of the sensor to change, which changes the original state of the verification time, resulting in zero drift. Produce errors.

3. Repeatability error:

The refolding error is the difference between the output readings of the load cell obtained from several consecutive process tests under the same load and the same environmental conditions. It is caused by the influence of some relatively fixed factors. 

In addition to the repetitive errors caused by changes in environmental conditions such as temperature, humidity, wind, and gravity field during weighing measurement, there are mainly electronic weigh scale sensors and lateral force sensors. The repeatability error caused when the conditions are not met.