Methods adopted at LCIE for solving basic problems in the determination of AC-DC transfer differences of thermal converters

The absolute determination of the ac-dc transfer differences by a step-up method involves some problems such as the knowledge of the ac-dc transfer differences öf the reference element and the determination of the error arising from the use of thermoelements at full range and fractional range during the step-up procedure. The methods used to take care of these errors are described.