Keithley DMM6500

Section 2: Performance verification Model DMM6500 6½-Digit Multimeter with Scanning Calibration and Adjustment Manual
2-20 DMM6500-905-01 Rev. A/July 2018
3. On the DMM6500, press the FUNCTION key and select Temperature.
4. Press the MENU key.
5. Under Measure, select Settings.
6. Select Transducer.
7. Set the Type to 4-wire RTD or 3-Wire RTD.
8. Set the RTD Type to PT100.
9. Press the HOME key.
10. On the calibrator, select 19 Ω source resistance.
11. Select the OPER and EX SNS keys.
12. Record DMM6500 accuracies.
13. Refer to the table for PT100 accuracies.
Fluke 5720 and 5730 resistance source values vary and may require new resistance-to-temperature
target accuracy values.
14. Repeat for 100 Ω and 190 Ω source values.
Example
PT100
R
0
1.000000E+02
alpha
3.850550E-03
beta
1.086300E-01
delta
1.499900E+00
A
3.908304E-03
B
-5.775440E-07
C
-4.182852E-12
Nominal
calibrator
value
(Ω)
Actual calibrator
value
(Ω)
Temperature
(°C)
4-wire RTD
3-wire RTD
±0.06 °C accuracy
(±Ω from actual
calibrator value)
±0.75 °C accuracy
(±Ω from actual
calibrator value)
19
18.999520
-198.8900
0.0259
0.3241
100
99.99707
-0.0075
0.0235
0.2932
190
189.99234
238.6775
0.0218
0.2725