National Instruments NI 9226, Calibration Procedure

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NI 9216/9226 Calibration Procedure
6. Connect the power source to the cDAQ-9178 chassis.
7. Launch Measurement & Automation Explorer (MAX).
8. Right-click the device name and select
Self-Test to ensure that the module is working
properly.
Verification
The following performance verification procedure describes the sequence of operation and test
points required to verify the NI 9216/9226. The verification procedure assumes that adequate
traceable uncertainties are available for the calibration references.
Accuracy Verification
Complete the following procedure to determine the As-Found status of the NI 9216/9226.
1. Set the calibrator to Standby mode (STBY).
2. Connect the desired channel of the NI 9216/9226 to the calibrator as shown in Figure 1.
Connect only one channel at a time.
Figure 1. 4-Wire Resistance Connections
3. Set the calibrator as a resistance source to a Test Point value indicated in Table 2.
4. Set calibrator COMP to 4-wire.
Table 2.
NI 9216/9226 Accuracy Verification Test Limits
Module
Range Test Point 1-Year Limits
Minimum
(
Ω
)
Maximum
(
Ω
) Value (
Ω
)
Upper
Limit (
Ω
)
Lower
Limit (
Ω
)
NI 9216 0 400
0 0.03 -0.03
100 100.042 99.958
320 320.0684 319.9316
NI 9226 0 4000
0 0.3 -0.3
1000 1000.43 999.57
3200 3200.72 3199.28
EX+
HI
LO
AUX LO
AUX HI
EX–
RTD–
RTD+
NI 9216/9226 CALIBRATOR
4-Wire Connection