IAN-3 measuring instrument for the precision measurement of high voltages in X-ray apparatus

The IAN-3 measuring instrument for accurate measurements of anode voltages with ripples in x-ray apparatus in the 40–125 kV range has been developed. The measuring instrument, the method of adjusting and calibrating it, and the results of the calibration are considered. The measurement error does not exceed 0.25%. The IAN-3 measuring instrument can be used to calibrate radiation-type kilovoltmeters and for adjusting medical x-ray diagnostic equipment.