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Still more possibilities with multimeters!

Multimeter service

The meter is probably the most valuable tool for a technician. In general, use a multimeter to measure voltage, current, resistance and even continuity. The last meter models have shown that they are devices with unlimited possibilities. Now they can also indicate the temperature, measure the capacitance and inductance, test the batteries. They also help to ensure that your diodes and transistors your are in good condition. High-End devices are equipped with “True RMS” function to accurately measure AC voltages that do not have a sinusoidal shape.

Find the right equipment for your needs

The meter that you wish to choose must match your best expectations. Different meters are categorized by their power and their characteristics. Multimeters of different categories according to multimeter reviews:

  • Multimeters CAT I: Used to measure the voltage of battery-powered devices or to use a galvanic isolation transformer. Example: Repair flashlights, radio transistors, stereo systems, etc.
  • Multimeters CAT II: Used to measure the voltage of devices connected directly to a listing by sector. Example: Repair of household appliances, power tools, etc.
  • CAT III meters: Used to measure the voltage of the domestic installations and final installations. Model: sub-distribution channels, sockets.
  • CAT IV meters (direct distribution EDF): Primary source, airline system and cable, including distribution busbars and supply materials for protection against overcurrent.

How to measure the voltage with a multimeter

To gauge the voltage with a multimeter, you must first connect the test leads, define the correct measurement (DC or AC) and then set the right range of size. To avoid triggering the integrated fuse, leaving a relatively high-frequency range and adjust gradually to the desired value. Some cameras have an Auto-Range function that automatically sets the correct measurement range.

  • Connecting a cord measuring multimeter
  • Test lead connection on port multimeter
  • The voltage measurement is done at the source

Adjusting the measuring range

Important: When measuring, make a clear distinction between direct current and alternating current. The voltage measurement is carried parallalèlement the energy receiver. The voltage measurement is always performed in parallel to the receiver or directly to the energy source.

How to measure current with a multimeter

To measure electrical current, you must first connect the probe to the cable then set the appropriate measuring range. To set the measuring range, see the power consumption of the device sounded. A simple rule: first, opt for the maximum measuring range then descend gradually to the desired value. Current whose intensity exceeds the measurement range accepted by the meter should not be measured. It will be preferable in this case to choose a more suitable unit.

  • Connecting a cord measuring multimeter
  • Comparing the test leads to the ports of the meter provided for this purpose
  • The measuring device is crossed by the current

Adjusting the measuring range

  • Defining the appropriate measuring range
  • The current measurement is carried out in series with the device
  • Measuring the current intensity is always in series, which means that the meter is traversed by the current.

The digital multimeter – the quintessential versatile

Whether for the DIY or professional use, digital multimeters are devices with multiple talents. Utilized in the industrial world, their various functions will satisfy any electrician. Because not only they can measure the current and voltage, but they also serve tester resistance and continuity. But that’s not all: many multimeters also indicate temperature, capacitance, and inductance. To top it all, they are also able to test the condition of the batteries, diodes, and transistors. Others allow reporting a high level of low or logic. And for the more expensive models, the “True RMS” function allows a very accurate measurement ( “True RMS” correct = practical value) non-sinusoidal AC currents.

The analog meter – Quick test sockets

Despite their slow predatory world far, analog multimeters are used mostly for displaying the measured data. Naturally, analog multimeters are much less accurate than digital multimeters. However, they are very convenient to observe trends (oscillation of current and voltage). For measuring the voltage with an analog meter, it is necessary first of all carry out a current measurement. The scale of values present on the analog meter screen converts the current value detected by voltage.

This is Zoniv from http://www.zoniv.com – the site that provides useful information about best multimeters in the market. Enjoy reading!

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