The scales are designed to measure the mass of the object, the so -called strength acting on the device. The weight measurement device has existed for a long time, the first well-known use was precisely in trade, and now it remains unchanged equipment in any supermarket or market, these devices can be seen more clearly here .
The use of libra can be seen in many sectors of medicine, pharmaceuticals, domestic for general use, car for measuring cargo, car and other scientific industries for which the most accurate scales are used.
Weight measuring equipment has a large number of varieties of devices, both in terms of characteristics and on the principle of action. Mechanical scales are based on the principle of a lever, for this they use weights with a metrological precise weight for comparing the goods (weights with an accurate weight close to the true value are stored at the Metrology Institute as a standard of weight), but has a greater error over time as a result of measurements. Such accuracy losses occur as a result of mechanical wear of individual parts and the main structure of the device. Electromechanical scales are carried out with the help of the mechanical part built on the principle of levers, and derives the result thanks to the electronic device.
Electronic scales are arranged differently using a measuring weight sensor sending information about the result to the indicator. Such scales can last a long time, also has a small value of the errors as a result compared to mechanical weights. Modern scales are equipped with an additional property, such as the calculation of the amount based on the price and weight of products, which allows you to optimize the purchase process.
There are a huge number of varieties and additional functions of weights in the field of industry. With certain errors and results of verification and calibration of the device.
The error of indications means the greatest degree of proximity of accurate and closest results to true value. The error can be expressed in permissible values that do not go beyond the boundaries of the permissible and indicated in the passport to the measuring device, the results.
