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Instrumentation/loose connection problem...Dynon capacitive fuel senders.

Steve Sampson

Well Known Member
I read my fuel tanks with Dynon capacitive senders outputting to an AFS 3400. On the right tank I have what is probably a loose connection resulting in a very disconcerting apparent emptying of the tank in flight, only for it to fill shortly after.

Because the AFS sensibly damps the reading you really cant tell if it is a loss of power to the Dynon sender, or a loss of signal from it. Of course like most intermitent problems I can never reproduce it on the ground.

A third possibility is a sender that is erratic. My QUESTION is this. Has anyone had problems with an intermittent signal from a Dynon capacitive fuel sender? Yes I might well swap the senders over to see if the problem follows the sender or stays with the wire. But it is hard to do on a -4.

The one good thing is that the frequency of the problem which I think increases my chances of finding it!
 
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