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NI WSN-3226 Calibration Procedure
Test Equipment
Table 1 lists the equipment recommended for the performance verification procedures. If the
recommended equipment is not available, select a substitute using the requirements listed in
Table 1.
Test Conditions
Follow these guidelines to optimize the equipment and the environment during calibration:
•
For the
Resistance Accuracy Verification
procedure, keep connections to the
NI WSN-3226 under 5 inches and within 1/8 inch in length of each other.
•
Verify that all connections to the device are secure.
•
The NI WSN-3226 must be powered by either an external 9 V to 30 V power supply or
four AA (1.5 V) batteries (alkaline only).
LabVIEW Help
LabVIEW programming concepts and reference information about NI-WSN VIs
and functions
Table 1.
Recommended Equipment
Equipment
Recommended
Model
Where
Used
Requirements
Calibrator
Fluke 5520A
Voltage
Use a high-precision voltage
source with an accuracy of at least
50 ppm and an output impedance
of
≤
1
Ω
Resistance
Use a high-precision resistance
calibrator with an accuracy of at
least 90 ppm
WSN Ethernet
gateway and
power supply
NI WSN-9791 with
9 V to 30 V power
supply
All
—
NI 9792 with 9 V to
35 V power supply
NI 9795 with
CompactRIO
system
Screw
terminal
wiring
—
All
14 to 24 AWG wire
