How to Use Analog Multimeter?

how to use analog multimeter

Multimeters are electronic instruments that technicians typically use for troubleshooting electrical appliances or wiring in general.

The newer digital multimeters widely replace analog multimeters, but there could be many instances where using the former would arise.

Even though analog multimeters are older, they are still preferred by some technicians and engineers. This is because they respond more quickly to any changes in the circuit and uninterruptedly take the reading, which allows them to monitor even the minutest changes.

How to Use an Analog Multimeter?

It is quite easy to use an analog multimeter. All you need is some basic knowledge of voltage current and resistance measurement. Ensure to install a battery for measuring resistance because you will need a battery while measuring current and voltage. Following is a simple step to step guide demonstrating how to use an analog multimeter.

  • First, you need to plug in the probes in the respective connections.
  • Secondly, you will need to set the range and type of measurement. The maximum range must be above the estimated one since you can decrease it later if required, and a higher range would prevent damages.
  • For getting precision in reading, you need to set the range optimally to get a maximum deflection.

A multimeter is used for the measurement of;

  • Voltage
  • Continuity
  • Resistance
  • Voltage
  • Current
  • Testing a battery

With 2 wires and correct settings, it will let you know whether you have a broken connection or have any faulty parts. Since it is an inexpensive tool, it is owned by most repairers who are into wiring diagnostics.

With the help of a moving coil meter, an analog multimeter takes the test and uses the deflection of an indicator meter to show the measurement.

How many Ranges are there in Analog Multimeter? There are multiple ranges in an analog multimeter explained in full-scale deflection, which is the highest range. For optimal precision, you must get the scale reading between a quarter and full-scale deflection.

Typically an analog multimeter would have;

  • DC Voltage ranging from 2.5V to 1000V
  • AC Voltage ranging from 10V to 1000V
  • DC Current running from 50µA, 1mA 10Mw, 100mA
  • Resistance ranging from R to 10000R.

How to use an analog multimeter for measuring voltage?

It would be best if you opted for the AC or DC voltage mode. Typically a dotted straight line is for DC, and a wavy line is for AC. Set the dial above the regular voltage to prevent any damages that could occur by choosing the one too low.

Please do not set it way too high because otherwise, the needle would hardly shift. For example, connecting the black probe to the negative terminal and the red probe to the positive terminal.

How to use an analog multimeter to test continuity?

This test is done to check for the circuit if it is open or closed. For a circuit to function, it must be a closed one. For testing continuity, you will have to power off the device so that there is no shock.

Next, you will set the multimeter to Ohm mode, which would send a small charge to determine whether the circuit is closed or open. If you get an infinity reading, it indicates an open circuit, whereas a 0 reading will mean it is a close circuit.

How to use an analog multimeter to test ohm/resistance?

This test is done to measure the amount of opposition a wire creates in a circuit. The unit for resistance is ohms. First, you need to disconnect the equipment from power so that both the multimeter and equipment are not damaged.

Turn On the analog multimeter, turn it to ohm mode, and plug In the black lead into the negative and red lead into the positive. Now intuitively take the reading and check it against the resistor.

How to use an analog multimeter to test the battery?

First, you need to locate the battery and check for any dirt and corrosion. Next, make sure that the multimeter’s red probe touches the positive terminal, whereas the black probe contacts the battery’s negative terminal.

Once the probes and terminals are connected, you need to check the reading and see if the battery has enough voltage.

How to check if the analog multimeter is working?

This is a basic test to check if the analog multimeter is working or not. All you need to do is set the multimeter at the lowest setting at ohm mode.

Next, you will have to touch or connect the black probe with the red one and check the reading on the analog multimeter. If the reading shows 0, there is no resistance which means that the multimeter is working correctly.

How to read an analog multimeter?

It is advisable to read the manual so that you know exactly how to read an analog multimeter. The needle behind the glass shifts shows omega shows resistance, DC for DC voltage, and AC for AC voltage.

From all the numbers below the scale, you will look at the range designated initially, and the parallel label will show the result.

Conclusion:

We hope you find this article helpful and will now be able to use an analog multimeter correctly to measure voltage, current, and resistance and test continuity and batteries. Make sure you take all the precautions and do not get harmed by the energized devices. You must scrutinize the user manual before using an analog multimeter.

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