Art said:
Maybe Bee's Wax?? Seriously, melted Bee's Wax applied over the item, it
will not affect the ability to sense temperature changes as long as the
ambient does not exceed the melting temp of the wax. I presume the sensor
is immersed in the pond, water covered?? IMHO
Thanks Art,
I think someone else suggested wax too. Yes, the sensor (LM34) is at the end
of a cable, covered in "connector coating". Seems to be similar to
Plastidip. The sensor is in the water and the board/case is attached to the
bottom of the pond cover's escape hatch. Water temp is around 40°F and the
outside air (above cover) can be as low as -40°F. Although we haven't seen
that yet.
I removed the circuit (board/case/sesnor) this morning. The solder side of
the board, which rests against the case lid, was dripping in water. The
component side seems almost completely dry. Once I dried the circuit out
again, it started to work fine. On the bright side, all that water
emulsified the flux residue. Making my coating job much easier.
I bought some Acrylic spray for my coating, they didn't have the dip. I may
also put some Silicone in the case lid to be safe.