[TheForge] Way OT -- remote thermometer for river water

[Chuck Robinson]

Reversing thermometer

On 4/22/2011 12:24 PM, Bruce Freeman wrote:
> I'm tapping the diverse knowledge of this group for a product I need.
>
> I want to measure the temperature of the water in small rivers.  Purpose -
> kayaking.  I could get right up to some of these and just stick a
> thermometer in them, but in most cases it would be a lot more convenient to
> drop a probe in from a bridge -- maybe 20' maximum distance.  But I can't
> just drop a thermometer into the water and pull it out from 20' above and
> get a reading -- the reading would change by the time I read it.
>
> If they'd work, I could use a remote thermometer like this one --
> http://www.harborfreight.com/non-contact-pocket-thermometer-93983.html  But
> I don't know WHAT temperature I'd be measuring just pointing a device at a
> river.
>
> Any thoughts as to what might work well for such an application?  I'd need
> accuracy within 2* or 3*F, nothing precision.
>