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Faizan
Electricity, which is the flow of sub-atomic charged particles known as electrons, has helped lead to a highly technological society. Multimeter's are portable electronic devices that are capable of measuring various electrical quantities such as voltage, current and resistance. These devices are used to test electrical components and fault test electrical appliances.
Setting Up The Multimeter
All multimeters should be checked and set up before performing a measurement. Make sure there is a battery in the multimeter and that the battery cover is closed. Measurement probes are supplied with multimeters and you should note a red probe and a black probe. Plug the red probe into the the positive terminal on the multimeter and the black probe into the negative terminal on the multimeter.
Select The Measurement Type
Multimeters are normally capable of measuring AC and DC voltage, current, resistance and continuity. The measurement type is normally selected via a dial on the front of the multimeter. Turn the dial to the correct abbreviation or symbol. DC voltage is indicated by a "V" and a straight line (measured in volts). AC voltage is indicated by a "V" and a wavy line (measured in volts). Resistance is indicated by a Greek Omega sign (measured in ohms). The continuity function is indicated by a dashed straight line below a straight line. Continuity tests will make an audible sound if the tested device is electrically continuous.
Testing the Multimeter
Before performing a measurement, the multimeter should be tested. The simplest way to test if it is measuring correctly is with its own continuity function. Switch the multimeter to continuity mode and bring the two measurement probes into contact with one another. The multimeter should make an audible sound indicating continuity. If no sound is heard, check the battery and the measurement probe connections.
Performing a Measurement
Select the measurement function from the dial on the front of the multimeter. Press the auto-range button. Be sure to hold the measurement probes on the coated plastic to avoid electrical shock. Place the measurement probes across the device that is to be measured. The multimeter will display the measurement within a few seconds. Take a note of the measurement and switch off the multimeter.
Setting Up The Multimeter
All multimeters should be checked and set up before performing a measurement. Make sure there is a battery in the multimeter and that the battery cover is closed. Measurement probes are supplied with multimeters and you should note a red probe and a black probe. Plug the red probe into the the positive terminal on the multimeter and the black probe into the negative terminal on the multimeter.
Select The Measurement Type
Multimeters are normally capable of measuring AC and DC voltage, current, resistance and continuity. The measurement type is normally selected via a dial on the front of the multimeter. Turn the dial to the correct abbreviation or symbol. DC voltage is indicated by a "V" and a straight line (measured in volts). AC voltage is indicated by a "V" and a wavy line (measured in volts). Resistance is indicated by a Greek Omega sign (measured in ohms). The continuity function is indicated by a dashed straight line below a straight line. Continuity tests will make an audible sound if the tested device is electrically continuous.
Testing the Multimeter
Before performing a measurement, the multimeter should be tested. The simplest way to test if it is measuring correctly is with its own continuity function. Switch the multimeter to continuity mode and bring the two measurement probes into contact with one another. The multimeter should make an audible sound indicating continuity. If no sound is heard, check the battery and the measurement probe connections.
Performing a Measurement
Select the measurement function from the dial on the front of the multimeter. Press the auto-range button. Be sure to hold the measurement probes on the coated plastic to avoid electrical shock. Place the measurement probes across the device that is to be measured. The multimeter will display the measurement within a few seconds. Take a note of the measurement and switch off the multimeter.
Posted in: electronics
