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Precision scales, the king of precision

Precision scales are always used in weighing technology when it is necessary to determine the weight very precisely, often "to the millimetre".With letter scales, for example, it is a question of being able to determine the postage, and every gram counts. Since electric scales weigh and count especially small and not easily countable products very well or the display guarantees exact readability, these precision scales are very popular especially for commercial, educational, laboratory and industrial applications. Due to the enormous accuracy, even in small and smallest areas, a high resolution is given. The so-called reference optimisation enables an exact determination of piece numbers. Precision scales are high quality, professional scales. Both battery and mains operation are possible. According to the new EU directive EWG precision scales have to be calibrated. Wherever the price is regulated by the weight, where it concerns the production of medicines, analyses in the medical/pharmaceutical laboratory or the official determination of fees and penalties, the necessary precision scales must be officially calibrated. If the scales are to be officially calibrated, this must be included in the order, otherwise they will no longer be officially valid. Precision scales may not be calibrated with a calibration weight after they have been officially verified. The calibration is valid for 2 years, after which the balance must be recalibrated every year. Some precision scales have a rising luminous band that indicates the weighing range that is still available. Some precision balances have an add-on weighing option to optimize the weighing result or to achieve a specific desired quantity.

Laboratory balances

Laboratory balances are the most common use of precision balances. In addition to extremely accurate weighing of weights, they also have a piece counting function. Of course, this is only possible if the balance receives reference material for comparison. Test certificates and calibration certificates are usually no problem either. Precision balances with an internal calibration weight deserve special mention. These balances are capable of self-adjustment. The time, e.g., every three hours or a temperature, the temperature drops by 1 °C..., is simply set in advance and the balance does the rest by itself. The automatic system ensures extreme accuracy. Of course, laboratory balances are also available with PC connection and printer. The weighing range extends from 100 g to 6 kg. Analytical balances are often equipped with a draft shield housing. Precision balances for laboratory or school use are often equipped with a load sensor. In addition, all precision balances have dust and water protection. For laboratory use, there are special precision balances for determining the density of liquids and solids. The moisture analyzer is a precision balance for particularly heavy and large-volume samples.

Moisture analyzers sometimes have halogen quartz radiators for heating. Precision balances used to determine moisture content have a heating chamber. This is heated, the sample dries and the balance calculates the moisture content from the difference in weight. Some precision balances also have an automatic calibration function when the balance is switched on.

Other precision scales

Floor scales are often platform scales and are also part of the precision scales, high quality and usually smaller. Some are designed to be easily cycled through during the weighing process.

Pallet scales are also precision scales and look u-shaped.

Another area where precision scales are of utmost importance is in the jewelry industry. Gold scales, gemstone scales and fine scales are used in this industry. These balances have a draft shield and also work with extreme precision. The weighing range is between 0.005 g and 100 g. The weight units that come into play here are grams, milligrams, grains, ounces and carats. These types of scales have a tare function as well as automatic shut off to conserve battery power.

Precision scales are special precision scales for particularly small objects or low weights. One application would be archery, where arrowheads need to be checked for allowable weight. The unit is grain.

Conclusion

Precision scales are high precision devices for both everyday and extraordinary industrial use. They have some very sophisticated additional features that make the user's life noticeably easier. Particularly difficult and time-consuming were the determination of moisture content as well as that of piece counts of small and very small objects. Although most precision balances are intended for daily, professional, commercial use, they work precisely, trouble-free and are highly reliable in continuous operation. Cleaning and maintenance are also easy. A very special relief in the daily use is the independent calibration, readjustment as well as the battery switch-off, if this should not be necessary. Despite all the fine and detailed work, these little everyday helpers are extremely robust and resistant.

The fact that initial calibration must take place immediately before delivery and is not possible later is somewhat disturbing. Every user wants to have the necessary tool in front of him as quickly as possible and fully functional. A verified balance is a verified balance, i.e. a balance with a special status, a special legal status - so it is always worth waiting a little longer for delivery. In practice, it has proven worthwhile to always have spare batteries, a second scale and smaller spare parts on hand for emergencies. Whether the balance should be purchased, rented or borrowed depends, of course, on the frequency of intended use. If the precision scale is used several times a day, it will definitely pay to buy it. However, what should never happen to the precision scales is that they are used for purposes other than those for which they are intended. Moreover, scales, especially calibrated scales, are devices for official use and should be kept in locked rooms, areas, furniture. In this connection, it must also be pointed out that calibration and calibration records should always be kept locked away, e.g. together with accounting records, tax returns, etc.. These are official documents which have enormous probative value. This is particularly obvious in the jewellery industry.