Fluke 754 - RTD Measure, Three-Wire

Documenting Process Calibrator
Performance Verification Tests
27
5522A
CALIBRATOR
Fluke 75X
Fluke 5522A
4-WIRE COMP ON
4-WIRE RTD
gso13.eps
Figure 11. Four-Wire RTD Measure Verification Connections
Table 15. RTD Measure Verification (100W Pt (385), Four-Wire Connection)
Input °C
(Resistance)
1-Year ( °C ) 2-Year ( °C )
-180 °
(
27.096 Ω
)
-179.93 to -180.07 -179.86 to -180.14
100 °
(
138.505 Ω
)
99.93 to 100.07 99.86 to 100.14
780 ° (369.712 Ω) 779.79 to 780.21 779.59 to 780.41
RTD Measure, Three-Wire
Note
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.