Low Frequency Current

Traceability of thermal current converters covering the current range from 1 mA to 20 A has been established to the primary standard of LF current in the frequency range 10 Hz to 10 kHz (Bank of multijunction thermal converter, uncertainty + 20 ppm at 5mA).

The traceability of LF voltage & current has been established by assigning AC-DC transfer difference and these measurement systems have been automated which help us in faster and accurate measurements. The block diagram for these measurements has been shown below.

Measurement and calibration capabilities for Low Frequency Current