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

[peter fels]

Since we are on the subject;
Is there an inexpensive IR thermometer that will do tempering , annealing and phase transition temperatures too yet?


On Apr 22, 2011, at 10:55 AM, Daniel T Hayes wrote:

> Bruce,
> 
> Interesting question, interesting enough to make me take my Cen-Tech Laser
> Infrared Thermometer (also from Harbor Freight,  #96451) out and try it on
> the swimming pool. The reading aimed at the water matched the pool
> thermometer within three degrees.
> 
> Keep in mind that any of these devices need "calibrated" if you are really
> interested in the precise true temperature. I have mine for checking welding
> preheat temperature. It's off a bit (as determined by a calibrated contact
> thermocouple setup) but consistently so at any given temperature. Much more
> convenient.
> 
> I think a HF infrared pyrometer would work very well for what you have in
> mind.
> 
> Dan
> 
> -----Original Message-----
> From: theforge-bounces at mailman.qth.net
> [mailto:theforge-bounces at mailman.qth.net] On Behalf Of Bruce Freeman
> Sent: Friday, April 22, 2011 1:24 PM
> To: Blacksmithing List Sponsored by ABANA
> Subject: [TheForge] Way OT -- remote thermometer for river water
> 
> 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.
> 
> --
> Bruce
> NJ
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