Rtd Source - Fluke 753 Calibration Manual

RTD Source

To verify the RTD Source function:
1. Connect the UUT to the 8508A DMM as shown in Figure 8. Use a four-wire
connection transitioning to two-wires at the UUT.
2. Set the 8508A to 4-Wire Ohms, auto-range.
3. Set the UUT to the RTD source function, Pt100 (385) at -180 °C, ITS-90 scale.
4. See if the value shown on the DMM is in the range shown in the applicable
column in Table 17.
5. Continue through the test points.
6. When you complete the test, push  on the UUT two times to turn the source
function off. This conserves battery life.
UUT
Nominal (Ohms)
Output
-180 °C 27.096
100 °C 138.505
780 °C 369.712
Table 17. RTD Source Verification
Minimum
1-Year
27.075
138.487
369.6707
Documenting Process Calibrator
(100W Pt (385))
Maximum Minimum
1-Year 2-Year
27.118 27.054
138.524 138.468
369.7532 369.630
Performance Verification Tests
Maximum
2-Year
27.139
138.543
369.795
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