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NI WSN-3226 Calibration Procedure
14. Repeat steps 1 through 13 for each channel on the NI WSN-3226.
Note
The limits in Table 5 are derived using the values in Table 7.
If the Resistance Accuracy verification procedure determines that the NI WSN-3226 is outside
of the limits, refer to
for assistance in returning the device to NI.
Re-Verification
Repeat the
section to determine the As-Left status of the device.
Accuracy Under Calibration Conditions
The values in the following tables are based on calibrated scaling coefficients, which are stored
in the onboard EEPROM.
The following accuracy table is valid for calibration under the following conditions:
•
Ambient temperature of 23 °C ± 5 °C
•
Relative humidity between 10% and 90%
Table 5.
NI WSN-3226 Resistance Test Limits
RTD/Resistance
Range Setting
Test Point (
Ω
)
3-Year Ranges
Lower Limit (
Ω
)
Upper Limit (
Ω
)
400
Ω
/Pt100
100
99.893
100.107
390
389.777
390.223
4 k
Ω
/Pt1000
1000
999.26
1000.74
4020
4018.35
4021.65
100 k
Ω
4020
4011.39
4028.21
100000
99963
100037
Table 6.
NI WSN-3226 Voltage Accuracy
Range
Gain (% of Reading)
Offset (mV)
10 V
0.04
2.70
