[chbot] Filler for waterproofing temp sensors

[Jasper Mackenzie]

I tried and tried with these and the I2C chips and water always found a way
in.
All the readily available options failed.
I suspect that potting material is the best bet.

Recent experience from some friends suggests that it is also the heating
and cooling pulling moisture down the wires.

My need is long gone, but I am interested to hear of your success please!


On Fri, 21 Jul 2023 at 16:35, Charles Manning <cdhmanning at gmail.com> wrote:

> I have used epoxy and wax before. A lot depends on how waterproof and how
> durable you want to achieve. You could also use that liquid electrical tape
> stuff.
> Not all epoxies are waterproof for a long period underwater. Also consider
> that some materials are insulating and slow down the readings.
>
>
> On Fri, 21 Jul 2023, 14:04 Volker Kuhlmann, <list57 at top.geek.nz> wrote:
>
>> I have a bunch of these capped metal tubes and a bunch of temperature
>> sensors in TO-92 case. What is a good material to fill the tube with
>> before pushing in the sensor, that is thermally conductive? Epoxy glue?
>>
>> Yes they are available ready-made on Ali (waterproof DS18B20) but I
>> don't trust the sensor they use.
>>
>> Thanks,
>>
>> Volker
>>
>> --
>> Volker Kuhlmann
>> http://volker.top.geek.nz/      Please do not CC list postings to me.
>>
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