Developing a new balance for the new kilogram


The National Metrology Institute of Germany developed the New balance required for measuring the Planck balance. This highly precise electronic weighing balance does not measure.

On the basis of the original kilogram using weights but refers to the fundamental physical constant the Planck’s constant.

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The balance used worldwide for calibrating other scales or balances. So, that those correspond to the system with this new method as required. The new balance also used in industry for measuring weights. In many sectors there is a significant demand for highly precise balances in pharmaceutical companies. For precise dosing of medical products, in official metrology service labs. Calibrating scales for food and in police departments for forensic investigation the proof of toxic substances and in ballistics.

Kilogram defined by a Planck’s constant.

In coming years the kilogram revolutionized as the original kilogram a 4 cm small cylinder made from platinum and iridium. Stored under three glass domes in a safe near Paris since 1889 is becoming lighter. Within one hundred years it has lost 50 millionths of a gram. As all scales worldwide refer indirectly to this unique kilogram.

All weigh incorrectly even if it is only minimal and negligible. Although the original kilogram is becoming lighter. Structurally identical copies of the prototype remain constant worldwide. As the original kilogram is the measure of all things, these copies are slowly becoming heavier.

New “kilogram” assuming in the 26th General Conference on Weights and Measures kilogram is not defined by a physical constant, the Planck’s constant. The highly precise continuously measuring Planck balance, developed by the German university Technische Universität Ilmenau, operates on the principle of electromagnetic force compensation. Simply put, a weight on the one side to balance by electrical force on the other. This electrical force inextricably linked with the Planck’s constant and directly referred to new kilogram definition.

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In addition, balance is first self-calibrating instrument of its kind, masses determined as reference or standard masses for calibrating scales and balances are no longer required. Another advantage of the Planck balance is its wide measuring range covering a range from milligrams to one kilogram.

Further, at the end of the year the first prototype of the balance will be available and ready for use.