KERN VHM_M Operating Instructions Manual

Contents

KERN VHM_M Operating Instructions Manual Manual pdf 12 page image

8 AdjustmentAs the acceleration value due to gravity is not the same at every location on earth,each balance must be coordinated - in compliance with the underlying physicalweighing principle - to the existing acceleration due to gravity at its place of location(only if the balance has not already been adjusted to the location in the factory). Thisadjustment process must be carried out during the initial start-up, after change inlocation and variation of surrounding temperature. To receive accurate measuringvalues it is also recommended to adjust the balance periodically in weighingoperation.Observe stable environmental conditions. A warming up time (see chapter 1) isrequired for stabilization. Ensure that the system is unloaded. The system should belifted by approx. 2 lifting index marks and stand absolutely clear.In verified weighing systems observe the check number.After switching on the display unit the check number is displayed. Thisnumber will be automatically adjusted after every interference. In verifiedsystems this number is an integral part for conformity evaluation. With that itis always possible to check whether a new adjustment has been carried out.In order to display the check number, switch off and switch on the system by. The display unit shows subsequently e.g.:Ö 8888.8 (check of LCD segments)Ö P 7.3 (software no.)Ö 14325 (check number)Ö 0 (weighing mode)The verification is not valid, when the check number of the system does notmatch with the check number on the type plate.8.1 Zeroing¾ Unload weighing system and switch on with .¾ Press approx. 8 sec until the display counts reverse from AF08 to AF00,followed by a determined percentage, e.g. AP 6.4. This percentage must not bemore than 20.¾ After zeroing the system will automatically return into the standard weighingmode.VHM_M-BA-e-101212