EXAMINATION APPARATUS WITH MASS BALANCING FOR A PART THEREOF WHICH IS PIVOTABLE ABOUT AN AXIS

摘要

: "An examination apparatus with a mass balancing device which is pivotable about an axis". The invention relates to an examination apparatus with a mass balancing device which comprises a compressed air cylinder which operates as a gas-pressure operated spring and whose internal pressure can be controlled in dependence of the sine of the pivot angle. To this end there is provided a pressure control circuit whose control variable is supplied by a sine generator which generates a signal which is dependent of the sine of the pivot angle.