Precision balance scale is a comprehensive product of the development of sensor technology, analog electronic technology, digital electronic technology and microprocessor technology. It has automatic calibration, automatic display, tare weight, automatic data output, automatic fault tracing, overload protection, etc. Features. Electronic precision balance scales usually use electromagnetic high precision load cell to form a closed-loop automatic adjustment system with high accuracy and good stability. The working principle of the electronic balance: When the weighing object is added to the weighing pan, the position detector signal of the high accuracy load cell changes, and the current in the sensor coil is increased through the feedback of the amplifier. This current generates a feedback force and a constant magnetic field. The applied load is balanced; at the same time, the voltage value of the current on the measuring resistance Rm is sent to the microprocessor through a filter and an analog/digital converter for data processing. Afterwards, the display automatically displays the value of the weight to be weighed.

How to use precision balance scale:

Precision balance scales are an indispensable and important instrument in quantitative analysis.

A full understanding of the performance of the instrument and a proficiency in its use are the guarantee for obtaining reliable analysis results. There are many types of precision balances, including ordinary precision balances, semi-automatic/full-automatic electro-optic projection damping precision balances and electronic precision balances. The following is an introduction to the usage and precautions of electronic precision balances.

Precautions for precision balance scales

1. The balance should be placed on a firm and stable cement table or wooden table. The room requires a clean, dry and relatively constant temperature. At the same time, direct light should be avoided on the balance.

2. When weighing, the material should be taken from the side door, and the door should be closed when reading to prevent air flow from causing the balance to swing. The front door is only used for maintenance or removal of residual materials.

3. If the electronic precision balance is not used for a long time, it should be energized and preheated regularly, once a week, for 2 hours each time to ensure that the instrument is always in good use.

4. Volatile, corrosive, strong acid and alkali substances should be weighed in a weighing bottle with a lid to prevent corrosion of load cell accuracy class c3 and the balance.

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