How to maintain the electronic balance in the dry season in winter

How to maintain the electronic balance in the dry season in winter

In the electronic balance exceptionally dry winter, due to the reduction of moisture in the air, resulting in the use of the electronic balance, since the goods weighing down the friction generated static electricity can not be normally derived, thus causing the weighing scales repeatability Zeroing is affected by certain factors and directly affects the accuracy of weighing! Especially in the weighing process using glassware, non-metallic containers, filter paper, etc., the impact is particularly serious.

So how do electronic balances are maintained during the dry season in winter? How do we do prevention and routine maintenance, please see the following points:

Since static electricity is unavoidable, we must eliminate the effects of static electricity by exporting or shielding as soon as possible. Electronic balances such as air humidifiers to ensure 45-70% humidity of the air, or metal containers, metal weighing pans, half-height weighing, etc., can effectively export or prevent static electricity.

In addition, some users have applied external static elimination equipment to eliminate the effects of static electricity. For example: static elimination pen, ion generator. The static elimination pen is suitable for small sample containers and filter papers. It is a convenient, effective and economical choice. For larger sample weights, an ion generator is used to shield the static charge. In addition, the balance operator should wear pure cotton clothes as much as possible to avoid static electricity generated by friction between the clothes.

For users who use Sartorius electronic balances, it is more convenient to directly apply a windshield with electrodes to form a stable electrostatic field to shield static interference.

In addition, the weighing of containers using the balance of the balance of the electronic balance will also affect the weighing error of the balance due to the influence of static electricity, air flow and buoyancy caused by friction and the deviation of the four corners of the balance. It is recommended to use the net for this. Grid-shaped metal container tray, or half-weight weighing.