How to check Resistor with a multimeter?
Multimeter setting: Insert Black probe at common Jack and Red probe at Voltage input terminal jack,
Identify the Ohms 'Ω' (Resistance) symbol on the dial and turn the dial to that position,
The multimeter powers up and the Mega ohms symbol appears on the display.
Most multimeters power up in Auto range mode, It can automatically select the best range based on the resistance present on the test probes,
The meter may show OL reading on the display, It is because now there is an open circuit between the test leads.
Just short the test leads, Ideally, meter will show zero ohms reading, But practically meter may read 0.2 Ω to 0.5 Ω reading, This small resistance is because of the test leads resistance. We must consider this resistance value as zero. Otherwise use the Relative function to make the display value to zero.
For a manual range multimeter always set the next highest range for the measurement.
It is highly advised not to touch the metal parts of the test leads,
Follow all safety procedures before taking the measurement,
If the component is in the circuit, the measurement could be affected, because of the other parallel components in the circuit. So it is advised to remove one end of the Resistor from the circuit to get accurate results.
Connect test leads across the Resistor, We can see the reading on the display.
Almost all resistors have color coding or marking on their surface to denote their value, We must compare the marked value with the reading on the meters display, in order to know whether the resistor is ok or not.
Manual Range: If we press the Range button, The meter enters into Manual range mode, and now the user needs to select the best range for his measurement.
It is to be noted that the higher the range we select the lower the accuracy in reading.
The auto range can be restored by continuously pressing the Range button for more than 2 seconds.
Hold Function: If we press the hold button with the meter still connected to the circuit, then the meter captures and locks the measurement on the display. So we can view the measurement after disconnecting the meter from the circuit.
Timestamps for various topics covered in this video are as follows:
0:21 Multimeter setting for Resistance measurement,
0:30 Identifying symbols on the display,
1:12 Safety precautions before taking measurements,
1:44 Taking Resistance measurement,
2:09 Manual range function of DMM.
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This video is helpful for students and working professionals,
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