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Documenting Process Calibrator Performance Verification Tests 27 5522A CALIBRATOR Fl u ke 75X Fl u ke 5522A 4-WIRE COMP ON 4-WIRE RTD gso13.eps Figure 11. Four-Wi re RTD Measu re Verification Conn ections Table 15. RTD M…

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Table 14. Temperature Source Verification (Type-K Thermocouple, ITS-90)
UUT
Output
Nominal DC mV
Minimum
1-Year
Maximum
1-Year
Minimum
2-Year
Maximum
2-Year
-180 °C -5.5504 -5.5616 -5.539 -5.5653 -5.5353
0 °C 0.0000 -0.0197 0.0197 -0.0237 0.0237
1300 °C 52.4103 52.3928 52.4277 52.3893 52.4312
RTD Measure, Four-Wire
Note
It is necessary to use a separate verification procedure for the three-wire
RTD measure function because it uses different circuits. The two-wire RTD
measure circuit is tested during the Ohms Measure procedure. If a 5522A is
not available, replace it with a variable resistance source such as a general
resistance RTD-100 RTD simulator and a DMM to measure the variable
resistance source for accuracy. Use the resistance equivalents shown in
Table 15.
To verify the four-wire RTD Measure function:
1. Connect the UUT to the 5522A as shown in Figure 11. Use a four-wire
connection and four-wire compensation.
2. Set the UUT to the RTD measure function, Pt100 (385), ITS-90 scale, and four-
wire termination.
3. Set the 5522A to RTD, Pt100 (385) at -180 °C, ITS-90 scale, and comp four-
wire.
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 15.
6. Continue through the test points.
7. When you complete the test, set the 5522A to STANDBY.
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.
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6. Continue through the test points.
7. When you complete the test, set the 5522A to STANDBY.
5522A
CALIBRATOR
Fluke 75X
Fluke 5522A
gso14.eps
Figure 12. Three-Wire RTD Measure Verification Connections
Table 16. RTD Measure Verification (100W Pt (385), Three-Wire Connection)
Input °C (Resistance) 1-Year ( °C ) 2-Year ( °C )
-180 °
(
27.096 Ω
)
-179.53 to -180.47 -179.46 to -180.54
100 °
(
138.505 Ω
)
99.53 to 100.47 99.46 to 100.54
780 ° (369.712 Ω) 779.39 to 780.61 779.19 to 780.81