What is a multimeter , and how to use it

How to use a multimeter?Video instruction

Multimeters are designed to primarily carry out measure voltage, current, capacitance and resistance check.Many expensive models of these devices are also able to measure the temperature, measure the gain of the transistor and diode test mode, the definition of a short circuit in the network.With the new generation of capacitors can easily measure the capacitance and inductance of the coil.

Use a multimeter with special probes, wires in his kit.The peculiarity of the use of low-cost multimeters can be called that before their operation, it is necessary to fix the point of entry of the two tape wires.Otherwise the wires may fall off because they are very poorly fixed.

Product description

If you want to learn how to use a multimeter, should first deal with his device.

At the top of any multimeter is a digital board.Normally, it can display up to four digits and is a seven segment.The scoreboard displays the measurement results, in addition, there also contains information on the status of the instrument batteries.

Most appliances under the scoreboard is Hold button and Back Light.Hold allows you to keep in mind devaysa last measurement, and Back Light is to illuminate the screen, if necessary.

On the reverse side of the housing leg should be placed, which can be leaned when necessary instrument.It feeds on the device battery 9, which is located under the hood.There is also a fuse, which should provide protection from failure.

How to use DMM

Before starting any measurement, it is necessary to connect the probes correctly.Here's how:

1. main wire marked in black, always a minus.Therefore, it must be connected to the socket labeled "COM" on the reverse side of the meter.
2. red wire represents a plus, we connect it to the right of the black.
3. left is the nest that is designed to measure current up to 10 A. This is done without a fuse, so if misuse is likely to burn the device.

also on the back side of the device Set the common limit of the instrument.For example, often it is 600V.

How to use a digital multimeter and properly installed outside measurements

Here it is worth to point out that if you want to measure current or voltage in the device, in which the figures are not known beforehand, it is necessary to set a maximum limit of measurement.Otherwise, the meter may quickly fail.Only after the first measurements show that the number is too small or inaccurate, you can switch the measuring limit to a lower.

If you are interested in how to use a multimeter, you should know that the main task during its operation is properly installed switch.By default, it is set to "off", that is, the device is not working.The user himself will move it to the desired value, depending on what it plans to measure.

To measure DC current, for example, a conventional galvanic battery, test leads should be attached to its ends.Thus, knowing that the DC battery is about 3 - 3, 5, it can be said that the measurement range should be set higher.The advantages of putting a battery plus and minus to - minus.the current value is displayed on the scoreboard.

Now you know how to use the digital measurements and how to spend all the simple measurement.