The electronic platform scale can be divided into: u-shaped steel electronic platform scale, channel steel electronic platform scale, I-beam electronic platform scale, reinforced concrete electronic platform scale; according to sensors can be divided into digital electronic platform scale, analog electronic platform scale, all electronic electronic platform scale The electronic weighbridge is commonly known as the weighbridge. Their basic configuration is the same. The products produced are welcomed by customers. I think this is a problem that allows countless merchants to think about it, and the performance of the product largely determines whether this product is an audience. Let's talk about how the electronic scale can be designed to effectively improve its overall performance.
1. Guarantee of technical indicators of electronic scale weighing sensors
The selection of various technical indicators to meet the accuracy requirements of the load cell is the key to ensure the quality of electronic scales. Linearity, creep, no-load temperature coefficient and sensitivity temperature coefficient are important indicators of load cells. For each batch of load cells, sampling inspection and high and low temperature experiments must be carried out according to the sampling rate required by the relevant national standards.
2 , the nonlinear compensation of the electronic scale
   Ideally, the digital quantity of the electronic scale after analog-to-digital conversion should be linear with the weight applied to the scale. The accuracy is calibrated during the production process and the internal computer program is used for single point calibration. The slope of the number and weight is calculated according to the ideal straight line and stored in the memory. This makes it impossible to overcome the nonlinearity errors produced by the load cell and the integrator. With multi-point correction, using multiple lines to approximate a curve effectively reduces nonlinear errors without increasing hardware costs. For example, a 1/3000-accuracy electronic scale uses a 3-point calibration, and a 1/5000-accuracy electronic scale uses a 5-point calibration.
3 , the temperature coefficient of the electronic scale circuit
    Theoretical analysis and experiments prove that the input resistor and the temperature coefficient of the feedback resistor are important factors affecting the sensitivity temperature coefficient of the electronic scale. The metal film resistor with a temperature coefficient of 5×10-6 must be selected. High temperature testing must be performed for each electronic scale produced. For some products with a small temperature difference, the product can be compensated with a metal film resistor with a temperature coefficient of less than 25×10-6. At the same time of high temperature test, the product is temperature aging, which improves the stability of the product.
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