why not one of those ?!?
http://www.fuchs-shop.com/download/MultiSensor_Manual_V091028.pdf
this page is from germany but you should be able to get these anywhere else ...
regards,
marcus
Peter Hollenbeck <pwhb...@gmail.com> schrieb:
>I don't really understand why that works, but I could certainly do it.
>Thanks for the suggestion.
>Peter
>
>
>On Sun, Jul 7, 2013 at 5:01 AM, Jan Kandziora <j...@gmx.de> wrote:
>
>> Am 07.07.2013 02:13, schrieb Peter Hollenbeck:
>> > Stuart Island, British Columbia
>> >
>> > Interesting idea.
>> > Ocean water temperature here is about 10C and air temperature, when
>we
>> are
>> > here April through October, ranges from about 10 to 20. I will have
>to
>> > experiment to see if the differential would be a reliable
>indicator. It's
>> > difficult to say what the temperature of a dry bilge might be, as
>it is
>> > below the water line but separated from the water by 3/4" plywood
>plus
>> > epoxy and paint.
>> >
>>
>> If the difference is not high enough, you can place a heating element
>> (e.g. a PTC resistor) near the sensor. Once there is a water drop
>> between the two, heat conduction will drastically increase giving you
>a
>> reliable readout.
>>
>> Kind regards
>>
>> Jan
>>
>>
>>
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