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NI 9218 Calibration Procedure
j.
Use the DAQmx Close External Calibration to close and commit the calibration
session.
k.
Repeat steps c through j for each channel.
5.
Disconnect the NI 9218 from the calibrator.
Current Accuracy Adjustment, 20 mA mode
Complete the following procedure to adjust the accuracy performance of the NI 9218.
1.
You must complete the
Voltage Accuracy Adjustment, 65 mV mode
section before starting
this section.
2.
Adjust the NI 9218.
a.
Initialize a calibration session on the NI 9218. The default password is
NI
.
b.
Input the external temperature in degrees Celsius using the DAQmx Set Temperature
C Series Calibration function.
c.
Call and configure the DAQmx Setup 9218 Calibration function according to
Table 26.
d.
Call and configure the DAQmx 9218 Adjustment Calibration function according to
Table 27.
e.
Use the DAQmx Close External Calibration to close and commit the calibration
session.
f.
Repeat steps c through e for each channel.
Voltage Accuracy Adjustment, IEPE 5 V mode
Complete the following procedure to adjust the accuracy performance of the NI 9218.
1.
Connect the NI 9218 to the calibrator as shown in Figure 5.
2.
Configure the NI 9218 for the NI 9982 measurement adapters using MAX.
3.
Adjust the NI 9218.
a.
Initialize a calibration session on the NI 9218. The default password is
NI
.
b.
Input the external temperature in degrees Celsius using the DAQmx Set Temperature
C Series Calibration function.
Table 26.
Setup Configuration for 20 mA Accuracy Adjustment
Min (A)
Max (A)
Physical Channels
Measurement Type
-0.02
0.02
cDAQMod8/AI
x
Current
Table 27.
Adjustment Configuration
Physical Channel
Reference Value
cDAQMod8/AI
x
0
