[chbot] Filler for waterproofing temp sensors

[Charles Manning]

Jasper, I am curious as to the pressure you subjected it to.
Put it 20 meters deep in the ocean and I would not be surprised if it
leaks.

On Fri, 21 Jul 2023, 16:46 Jasper Mackenzie, <jasper.mackenzie at gmail.com>
wrote:

> 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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