Rtd Measure, Three-Wire - Fluke 753 Calibration Manual

Fluke 75X
4-WIRE RTD
Figure 11. Four-Wire RTD Measure Verification Connections
Table 15. RTD Measure Verification (100W Pt (385), Four-Wire Connection)
Input °C
(Resistance)
-180 ° (27.096 Ω)
100 ° (138.505 Ω)
780 ° (369.712 Ω)

RTD Measure, Three-Wire

If a 5522A is not available, substitute a variable resistance source such as a
General Resistance RTD-100 RTD Simulator and a DMM to measure the
variable resistance source accurately. Use the resistance equivalents shown
in Table 16.
To verify the three-wire RTD measure function:
1. Connect the UUT to the 5522A as shown in Figure 12.
2. Set the UUT to the RTD measure function, Pt100 (385), ITS-90 scale, three-wire
termination.
3. Set the 5522A to RTD, Pt100 (385) at -180 °C, ITS-90 scale, and comp four-wire
to "OFF" position.
4. Set the 5522A to [Operate].
5. See if the value shown on the UUT is in the range shown in the applicable
column in Table 16.
1-Year ( °C )
-179.93 to -180.07
99.93 to 100.07
779.79 to 780.21
Note
Documenting Process Calibrator
Performance Verification Tests
Fluke 5522A
5522A CALIBRATOR
4-WIRE COMP ON
2-Year ( °C )
-179.86 to -180.14
99.86 to 100.14
779.59 to 780.41
gso13.eps
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