NI 9213E Operating Instructions and Specifications
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Minimizing Thermal Gradients
Thermal gradients can be caused by changes in the ambient air
temperature near the front connector or by the thermocouple wire
if it conducts heat or cold directly to the terminal junctions. For the
best accuracy results, follow these guidelines for minimizing
thermal gradients:
•
Use small-gauge thermocouple wire. Smaller wire transfers
less heat to or from the terminal junction.
•
Run thermocouple wiring together near the spring-terminal
connector to keep the wires at the same temperature.
•
Avoid running thermocouple wires near hot or cold objects.
•
If you connect any extension wires to thermocouple wires,
use wires made of the same conductive material as the
thermocouple wires.
•
Minimize adjacent heat sources and air flow across the
terminals.
•
Keep the ambient temperature as stable as possible.
