EN
Electronic pricing scales usually refer to commercial electronic scales with pricing functions within a certain weight range. These electronic weighing scales use weighing sensors as weight signal conversion components and are equipped with load carriers, microcomputers, electronic devices, double-sided digital displays. Its working principle consists of electronic components, amplification circuits, AD conversion circuits, single-chip circuits, display circuits, keyboard circuits, communication interface circuits, stabilized power supply circuits, and other circuits. The working principle of electronic scales is simple - there is a sensor built into the scale, which will change the control of the current according to the change in pressure received, thus changing the displayed numbers accordingly.
When the user places an object on the electronic weighing scale tray, the object's pressure is applied to the sensor. At this time, the sensor will deform under pressure, causing the impedance to change, while causing the excitation voltage to change and output a changing analog signal. This signal is amplified by the amplification circuit and output to the analog-to-digital converter, converting it into a digital signal for CPU operation control. The CPU outputs these results to the display according to keyboard commands and programs until the results are displayed. With the development of electronic technology and computer technology, current electronic scale equipment, using advanced sensing technology, has achieved the maximization of eliminating human errors and meeting the modern weighing requirements of "fast, accurate, continuous, and automatic," more adaptable to the modern economic situation.
When storing electronic scales, the management should place them in a relatively dry environment to avoid erosion of the electronic weighing scales. When using electronic scales to weigh materials with certain corrosive properties, the users need to seal the materials.
When using electronic weighing scales, the scales should be placed horizontally on the workbench to ensure the stability of the workbench, avoiding vibration and shaking. Users should check the status of the electronic scale before use to keep it in a horizontal position.
Usually, electronic scales need to be preheated before use. The longer the preheating time, the more accurate the electronic scale's accuracy, so users can preheat the electronic scale according to the specific content in the user manual. Before preheating, adjust the level bubble of the electronic scale to the middle position to start the preheating work.
After long-term use, electronic weighing scales may have problems affected by environmental conditions and human factors. Correct maintenance is extremely important and necessary at this time. The maintenance principle is not to damage the measurement performance of the electronic scale and restore its measurement function in the shortest time. Generally, the maintenance of electronic scales should be carried out by professionals. However, due to various practical conditions, this method is often impractical. Thus, users also need to have some basic knowledge of maintaining electronic scales.
Maintenance and management greatly affect the weighing effect and service life of electronic scales. Each type of electronic scale has its own maintenance and management methods, but they are generally similar. Place the electronic weighing scale on a level and stable workbench to avoid vibration. During daily use, users should strengthen the inspection of the level status of the electronic scale. Regularly perform self-calibration or external calibration of the balance to ensure good working condition.
