NI WSN-3226 Calibration Procedure
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© National Instruments
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5
Resistance Accuracy Verification
Complete the following procedure to determine the As-Found status of the NI WSN-3226.
1.
Connect the calibrator to the NI WSN-3226 as shown in Figure 2.
Figure 2.
NI WSN-3226 Resistance Connections
2.
Configure a project for the WSN system in LabVIEW.
3.
Right-click the NI WSN-3226 in the Project Explorer and select
Properties
to launch the
Properties dialog box.
4.
Configure the NI WSN-3226 according to Table 4.
5.
Click
OK
.
6.
Right-click the NI WSN-3226 in the Project Explorer and select
Deploy
.
7.
Set the calibrator to a Test Point value indicated in Table 5 that corresponds to the
appropriate RTD/resistance range.
8.
Turn any connection compensation settings on the calibrator off.
Tip
On the Fluke 5520A, press the COMP softkey to turn compensation off.
9.
Create a VI in LabVIEW to acquire a voltage reading from the AI 0 variable on the
NI WSN-3226.
10. Acquire and average 25 voltage readings with the NI WSN-3226.
11. Compare the average of the NI WSN-3226 readings with the 3-Year Limits in Table 5.
12. Repeat steps 7 through 11 for all test points and all RTD/resistance ranges in Table 5.
13. Disconnect the calibrator from the NI WSN-3226.
Table 4.
NI WSN-3226 Resistance Configuration
Channel
Attribute
Channel
Value
Sample
Interval
Powerline
Filtering
Filtering
Strength
RTD/Resistance
Range
Measurement
Type
Resistance
1
50/60 Hz
High
Rejection
400
Ω
/Pt100
4 k
Ω
/Pt1000
100 k
Ω
C
a
li
b
r
a
tor
NI W
S
N-
3
226
COM
AI
EX
CH
x
LO
HI
