KERN 572 KB Operating Instructions Manual

Contents

KERN 572 KB Operating Instructions Manual Manual pdf 9 page image

572/573/KB/DS-BA-defsi-04410326.6 AdjustmentAs the acceleration value due to gravity is not the same at every location on earth, each balance must becoordinated – in compliance with the underlying physical weighing principle - to the existing accelerationdue to gravity at its place of location ( only if the balance has not already been adjusted to the location in thefactory). This adjustment process must be carried out during the initial start-up, after change in location andvariation of surrounding temperature. It is also recommendable to adjust the balance periodically duringweighing operation in order to obtain exact measured values.6.7 AdjustingUsing a precision weight, the accuracy of the balance can be checked at any time and adjusted.Warning:With verified balances, this precision adjustment is not possibleAdjustment procedure:Check that the surrounding conditions are stable.A short warm-up time of about 15 minutes is recommended for stabilisation.6.7.1 Adjusting for verification (KERN 573)General Information:Prior to the procedure of verification the balance has to be adjusted.Remark: The adjusting is only possible when not being blocked by the adjusting switch.The switch for this step is located at the bottom of the housing between the two turning feet.Switch to the right Adjusting function is released.This setting has to be selected before starting the adjusting.Executing the adjusting according to chapter 7.2 “Operation“.After the adjusting has been completed successfully it is nec-essary to turn the adjusting switch to the left for blocking.Switch to the left Adjusting function is blocked.After the adjusting has been completed successfully the ad-justing has to be blocked by switching to the left.The balance is now prepared for the procedure of verification.After the verification the adjusting switch has to be secured bya verification mark against access.6.8 VerificationGeneral:According to the EU guideline 90/384/EEC balances must be verified officially if they are to be used as fol-lows (legally regulated area):a) For commercial transactions if the price of goods is determined by weighingb) For the production of medines in pharmacies as well as for analyses in the medical and pharmaceu-tical laboratoryc) For official purposesd) For the production of finished packagesIn case of doubt, please contact your local office of weights and measures.Verification informationAn EU qualification approval is available for those balances marked as appropriate for verification in thetechnical data. In the event that the balance is applied in an area subject to verification as described above,it must be officially verified and re-verified at regular intervals.Re-verification of a balance is carried out in compliance with the respective legal provisions of the states.The term of verification validity for balances in Germany, for example, is normally 2 years.The legal provisions of the country of use are to be observed.