Agilent / HP / Keysight 428B
This unit measures direct current without interrupting your measured circuit or producing loading errors.
The DC current is measured by utilizing a clip on translator that converts the magnetic field around the conductor to an AC voltage proportional to DC current.
This voltage is detected and displayed as direct current.
Since no contact is made to the circuit, complete DC isolation is ensured.
Accuracy is ±(3% of full scale + 0.15mA).
Front-panel output of 1V into open circuit (for full scale deflection) is also provided.
DC Current 1mA - 10A
Frequency Range: DC to 400