The structural design of the fully automatic analytical balance also fully considers the needs and actual user experience of users. It usually has a large backlit LCD display, which makes the operator's vision softer and clearer when reading data, and can easily obtain accurate measurement information even in low light environments. At the same time, its humanized design and innovative structure, such as a five sided fully transparent glass windproof cover, not only effectively prevent interference from external airflow symmetry results, but also facilitate experimental personnel to observe the weighing process and sample status. In addition, it also has applications such as fully automatic fault detection, linear four point calibration, and overload protection, which can timely detect potential problems with the equipment and automatically adjust and protect it, extending the service life of the equipment and reducing maintenance costs.

Calibration method for fully automatic analytical balance:

1. Preheating

-After using the balance or not using it for a long time, it is necessary to preheat the balance to ensure that its internal electronic components reach a stable working state. The preheating time depends on the model and instructions of the balance, usually ranging from 30 minutes to 1 hour.

2. Self calibration

-Many fully automated analytical scales have automatic calibration capabilities. After preheating the balance, enter the corresponding calibration menu option, and the balance will automatically perform calibration operations.

-During the calibration process, the balance will detect and adjust its own measurement system through internal sensors and microprocessors to eliminate measurement errors caused by environmental factors, mechanical wear, and other reasons. After calibration is completed, the balance will display the calibration result, which generally includes parameters such as whether the calibration was successful and the current sensitivity.

3. Foreign School Law

-Prepare a set of standard weights with an accuracy higher than that of the calibrated balance.

-Adjust the balance to a horizontal position and turn it on according to the instructions to stabilize it. Then, place the standard weight on the scale pan of the balance.

-Record the reading of the balance and adjust the calibration parameters of the balance to make the reading consistent with the nominal value of the standard weight. The adjustment method may vary depending on the balance model, and can generally be achieved by entering the balance's settings menu and modifying parameters such as calibration coefficients or sensitivity.

-Repeat the above steps and calibrate using standard weights of different masses until the indicated errors of the balance at each measurement point are within the allowable range.

4. Linear calibration

-Select multiple standard weights of different qualities to cover the entire measurement range of the balance.

-Place the standard weights on the balance in ascending order, record the reading of the balance, and draw the balance reading weight mass curve.

-Check the linearity of the curve, that is, whether the lines connecting the points approximate a straight line. If a large deviation in linearity is found, it indicates that there may be nonlinear errors in the measurement system of the balance, and further adjustments or repairs are needed.

-Based on the results of linear calibration, adjust the measurement system of the balance to have good linear characteristics throughout the entire measurement range, thereby improving the accuracy of the measurement.