Re thread31-129379 on JP10 potting
We're using urathane conformal coating in a JP10 vapor aplication. It has been accepted for use in the application by the customer.
MarkRW
Sizing depends on many things, so there is no one answer. If you're looking at transformer windings you come up with different sizes then you do when running a PCB trace.
Problem is a thermal issue: the wire will heat up. What class of insulation, how hot you can let the wire get is application...
I'm assuming that the reason for the airflow is cooling. Easiest method is to measure the temperature: if the device is getting hot you've got a problem. Temp sensors are cheap.
Otherwise I'd recommend using an air flow sensor instead of pressure sensors. There are a few inexpensive airflow...