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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
1.02
alpha
3.850550E-03
beta
1.086300E-01
delta
1.00
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