How does a multimeter work?
Discover how to use a multimeter for your electric measurements and ensure your devices precisely.
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From the resolution of domestic electrical problems to the maintenance of industrial equipment, knowing the operation of a multimeter will allow you to measure with precision voltages, currents and resistances, to diagnose and solve electrical problems efficiently and safely.
In addition, if you are a worker in any environment where regular maintenance of electrical equipment is required, such as industries or laboratories, multimeter knowledge is essential to guarantee a safe and reliable operation of electrical systems, thus contributing to safety and efficiency in your workplace.
1 How to measure resistance?
To measure the resistance with a multimeter, select the adequate resistance scale in the multimeter (OHMIOS) and connect the test tips in parallel to the ends of the component whose resistance you want to measure. The reading shown in the multimeter is the resistance of the component in Ohms.
2 How to measure tension?
To measure the voltage (or voltage) with a multimeter, select the appropriate voltage scale (volts) and connect the test tips in parallel to the component or circuit from which you want to measure the voltage. The reading shown in the multimeter is the electrical potential difference between the measurement points in volts.
3 How to measure voltage?
The voltage measurement is done with a multimeter connecting the test tips in parallel to the circuit or component of which you want to measure the voltage. Be sure to select the appropriate voltage scale in the multimeter (volts). The reading shown will be the difference in electrical potential in volts.
4 How to measure current?
To measure the current with a multimeter, you must interrupt the circuit and connect the multimeter in series with the component or load whose current you want to measure. Be sure to select the appropriate current (amps) scale in the multimeter. The measured current will be displayed in the multimeter.
5 How to measure continuity?
The continuity function in a multimeter is used to verify if there is an electrical connection between two points. To measure continuity, select the continuity function in the multimeter and connect the test tips to the two points you want to verify. If there is continuity, the multimeter will emit a beep or show a value close to zero on the screen. If there is no continuity, no sound will be emitted and the screen will show "1" or "Ol" (overload).
5 Analog multimeter vs. Digital multimeter
Multimeters are essential tools in electronics and electricity to measure different electrical parameters. There are two main types: analog multimeters and digital multimeters. Both have their own advantages and disadvantages in terms of precision, ease of reading and additional functionalities.
Analog multimeters, with their needle indicator and graduated scale, can offer rapid reading and intuitive visualization of the measured values. However, its precision can be limited compared to digital multimeters, which provide exact numerical readings and often include additional functions such as the ability to store data or perform automatic calculations.
Although digital multimeters can be easier to read and offer greater precision, analog multimeters are often preferred by some professionals due to their simplicity and durability. Ultimately, the choice between an analog and digital multimeter will depend on the specific needs of the task and user preferences.
It is important, however, remember to follow safety precautions and manufacturer's instructions when using any electrical measurement tool, thus guaranteeing a safe and precise work at all times. Do you have any questions or concern about the use of multimeters or any other electric tool? Do not hesitate to contact us to obtain expert advice and technical support!