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NI 9212 Connection Guidelines
•
Make sure that devices you connect to the NI 9212 are
compatible with the module specifications.
•
The shield grounding methodology can vary depending on
the application.
•
Refer to your thermocouple documentation or the
thermocouple wire spool to determine which wire is the
positive lead and which wire is the negative lead.
Minimizing Thermal Gradients
Changes in the ambient air temperature near the front connector
or a thermocouple wire conducting heat directly to terminal
junctions can cause thermal gradients. Observe the following
guidelines to minimize thermal gradients and improve the system
accuracy.
•
Use small-gauge thermocouple wire. Smaller wire transfers
less heat to or from the terminal junction.
•
Run thermocouple wiring together near the TB-9212 to keep
the wires at the same temperature.
•
Avoid running thermocouple wires near hot or cold objects.
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NI 9212 Getting Started Guide