DT830B Current Measurement

The DT830B has four range settings to measure DC current. The ranges are marked "200µ", "2000µ", "20m" and "200m". One would use these to measure very small currents within a circuit, and as usual, a series load is required. The manual indicates that for these range settings, there is overload protection provided by a 500 mA / 250 V fuse.

Resolution and Accuracy

Measuring Current

Always measure current through a series load, because this measurement is the flow of electrons through a circuit. For example, when measuring the current flowing through a battery you would need a load resistance in series with it. The load could be a resistor, a bulb, or a circuit. It is worth mentioning that when the meter is set to measure current, never connect the test leads directly to a power source, otherwise you will damage the meter and the power source.

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