Keithley DMM7510 Calibration Manual page 45

Section 2: Performance verification
Verify the simulated RTD temperature
To verify RTD accuracy, use the following setup:
1. For 4-wire accuracy, connect the Model DMM7510 INPUT and SENSE terminals to the calibrator
as shown in the following figure.
2. For 3-wire accuracy, connect the Model DMM7510 INPUT and SENSE terminals to the calibrator
as shown in the following figure.
The SENSE HI wire is not required for 3-wire RTD measurements. For 3-wire RTD, accuracy is for
< 0.1 Ω lead resistance mismatch for input HI and LO. Add 0.25 °C per 0.1 Ω of HI-LO lead
resistance mismatch.
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Model DMM7510 7½ Digit Graphical Sampling Multimeter Calibration Manual
DMM7510-905-01 Rev. A / April 2015