While most of your instruments measure a value, some others change the value instead.

For example, the heat-exchanger in an air conditioner or an air-drier often looks like this…

In this situation, looking at the heat-exchanger in ARDI would only show you the inlet temperature - the temperature coming from up-stream. There's two problems with this…

• The inlet temperature isn't clearly marked as inlet - it's simply temperature, which is a little confusing
• Users are going to also want to see the outlet temperature too.

You can use references to solve the problem - in fact, the reference documentation specifically mentions this scenario.

Step by step, you need to….

• Go to the property details page for the asset, B.
• Add a reference to the down-stream sensor (C) temperature, calling it Outlet Temperature.
• Add another reference to the up-stream sensor (A) temperature, calling it Inlet Temperature.

This not only brings in both temperatures so you can see the performance of the heat-exchanger, but it also labels them appropriately so you can clearly see which is which.