DC current measurement is a process that uses an instrument to measure the amount of current flowing in a circuit that has a direct current (DC) power supply instead of alternating current (AC), which has a single direction of electron flow.
Instruments used to measure DC current
There are many types of instruments used to measure DC current, such as
1. Ammeter: A device that measures the amount of current flowing through a circuit. It is available in both analog and digital types.
2. Multimeter: A device that can measure voltage, current, and resistance. It can be set to measure DC current.
3. Clamp Meter: A device that can measure DC current without directly touching the circuit. Just clamp it on the wire.
Steps for measuring DC current
1. Select the appropriate instrument: For measuring DC current, a multimeter or ammeter that supports DC current measurement should be used.
2. Set up the multimeter: Set the multimeter to DC mode and select the appropriate measurement range (in amps).
3. Connect the instrument to the circuit: In the case of a multimeter, connect the positive and negative terminals of the instrument to the circuit correctly. The positive terminal is connected to the positive wire. Negative terminal connects to negative wire
4. Read the measurement value: Read the value displayed on the instrument screen, which indicates the amount of current flowing in that circuit.
Precautions for measuring DC current
1. Do not forget to turn off the circuit before connecting the instrument: to reduce the risk of short circuits
2. Check the capability of the instrument: check that the instrument used can support the maximum current to be measured
3. Safety: Check the wiring and instrument before use for safety
Application
- DC current measurement is often used in electronic work, such as checking batteries, measuring current in solar panels, and testing various circuits.
Mingdeng can calibrate this instrument to be certified by anab according to the calibration table standard.
