BSL021 Resistance Measurement 2-Wire/3-Wire & 4-Wire Kelvin

In this Video I measure the resistance of a low value 2.2 ohm resistor using a standard 2-wre measurement, as well as 3-wire and 4-wire kelvin clips.

The meters used are the Fluke 8846A 6.5 digit precision multimeter, Fluke 726 precision process calibrator, Fluke 289 50,000 count multimeter, Fluke 87 20,000 count multimeter, and a Fluke 117 6,000 count multimeter.

The focus of this video is taking the resistance measurement and the effect of 2-wire vrs 3-wire and 4-wire kelvin measurement with a relatively low ohm resistor.

Making a measurement of resistance under 1 ohm or where a close tolerance is required would preferably be done with a Kelvin measurement, but the environment also needs to be controlled.

This video focuses on a more common need to measure resistance where a Kelvin measurement is not typically required - subtracting the test lead resistance to compensating for their resistance when making measurements under a few ohms which is a common need.

Although not covered in this video, when performing a relative measurement the meter will be switched into a manual ranging mode. This is not normally a problem and most measurements I take are normally use manual ranging because it speeds up the measurement, however it is something you need to be aware of if you are used to only a auto ranging meter.