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Section 2: Performance verification
DMM6500 6½-Digit Multimeter with Scanning Calibration and Adjustment Manual
2-24
DMM6500-905-01 Rev. E June 2021
2. For 3-wire accuracy, connect the DMM6500 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.
Figure 8: Connections for 3-wire RTD accuracy verification
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.
Содержание DMM6500
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