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    Purchase of electronic balance

    2014/10/27 Viewers:
    How to choose the electronic balance? Choice of electronic balance should be from the absolute accuracy of electronic balance (dividing the value E) to consider whether it meets the requirements of the weighing accuracy. If choose 0.1mg precision balance or 0.01mg precision balance, avoid by all means is not generally have 1/10000 or 1/100000 precision balance, because some foreign manufacturers is to measure the balance with relative accuracy, or bought balance cannot meet the needs of users. For example, encountered such a situation in the practical work, with a practical value of a scale division of D 1mg, test value of a scale division e 10mg, the largest weighing electronic balance Mettler 200g, used to weigh 7Mg objects, this is not the correct results: in "JJG98-90 non provisions from the verification regulation of dynamic balance", the maximum permissible error and calibration value of a scale division "e" for the same order of magnitude, the balance of the maximum permissible error of 1E, obviously not weighing 7Mg objects; weighing 15mg objects are not the best choice for this kind of balance, because of the relative error of the test results will be very big, should choose a higher level of balance, some manufacturers have set the minimum value in the factory. Therefore, we must in the purchase and use of the electronic balance when considering the precision grade. The weighing range requirements: electronic balance in addition to its precision, also should see whether the largest weighing scale to meet the needs of. Usually the maximum load plus a little insurance coefficient can be, which is commonly used to load and then relax, bigger is not better.