KERN UFB Operating Instructions Manual

KERN UFB Operating Instructions Manual Manual pdf 13 page image

6.7 AdjustmentAs the acceleration value due to gravity is not the same at every location on earth,each display unit with connected weighing plate must be coordinated - in compliancewith the underlying physical weighing principle - to the existing acceleration due togravity at its place of location (only if the weighing system has not already beenadjusted to the location in the factory). This adjustment process must be carried outfor the first commissioning, after each change of location as well as in case offluctuating environment temperature. To receive accurate measuring values it is alsorecommended to adjust the display unit periodically in weighing operation.• Access to menu block “P2 CAL” is locked in verified weighing systems.KERN UFBAccess to menu requires breaking of seal and activation of adjustmentswitch (See chpt 6.8).KERN UFNIn order to access the menu you will have to short-circuit the twocontacts of the circuit board with a jumper (See chpt 6.8).Attention:The instrument will have to be reverified by a bureau of standards and anew seal attached if a seal was broken before applications subject toverification can be recommenced.Please follow verification instructions (See chpt 6.8.).• The applied adjustment weight depends on the weighing system'scapacity. Carry out adjustment as near as possible to the maximumweight of the weighing system. Info about test weights can be found onthe Internet at: http://www.kern-sohn.com• Observe stable environmental conditions. Warm-up time required forstabilization.UFB/UFN-BA-e-1011 13