Infrared non-contact Thermometer

[Nichols]

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At 09:17 AM 11/13/2005 -0800, you wrote:
>List:
>
>It has been my experience in testing that the infrared temp devices also 
>need what is called an " emissivity " (sp?) adjustments depending on the 
>surface type you are pointing it at.  This is due to the fact that it is a 
>reflective device.  Soooooo  if the adjustment is not correct for the 
>surface, then the temp will be a bit off.   I dont think this is a HUGE 
>variance in temp, but saying this just so folks are aware.
>The temps you get will still likely be a generic average that is usable.
>I'm not trying to make a big deal about nothing, but just so you are aware 
>thats all.
>
>Dave McKibben
>

Oh yeah,
    When I was testing for class date, I developed a "consistency target", 
so-to-speak. With my "cheapie" version, it was best to measure at two 
inches, and about 30 degree angle. Also, for certain fluctuation tests (we 
cooked a D, several times), I placed masking tape marker targets on the 
struts. So..... agreed. A generic usable average. Cool thing about 
averages, when you've got a ton of readings, they're pretty reliable.

Regards,
Guy

>
>----- Original Message -----
>From: <mailto:JackHouweling@dccnet.com>Jack Houweling
>To: <mailto:pianotech@ptg.org>Pianotech
>Sent: 11/12/2005 9:53:43 PM
>Subject: Re: Infrared non-contact Thermometer
>
>Hi Nichols,
>
>Mine has a laser pointer, you just sit on the piano bench and start 
>pointing and record tempertures up to six feet. I now just pointed it to a 
>light bulb and got a reading of 195*f.
>
>Jack Houweling
>----- Original Message -----
>From: <mailto:nicho@zianet.com>Nichols
>To: <mailto:pianotech@ptg.org>Pianotech
>Sent: Saturday, November 12, 2005 8:13 PM
>Subject: Re: Infrared non-contact Thermometer
>
>Jack,
>    Got pages and pages of temps from info gathered for a class. Wait till 
> you get your new toy on stage, man. It's cool. You can check your temps 
> on struts and strings and actually out-guess the pitch drop! If you have 
> a regular venue or two (or ten), you can get some averages for how much 
> change to expect under the lights and with an audience, etc. It's funny 
> how different it can be for different groups, like symphony or choir. 
> Once you get a fair idea of the swings, you're looking at about .8 cent 
> per degree F. The fun comes when you run out during intermission, etc., 
> with an ETD and the IR thermo to check stats. Way cool.
>Mine is a Radio Shack 50 buck model. I lust after the one I saw at the 
>radiator shop that had a laser pointer built in, and would read from 2 
>feet away.
>
>Have fun!
>
>Oh, and don't forget to take it outside with you next time you BBQ. Tells 
>you alot about how your smoker/grill/ whatever is working.
>
>La! ter,
>Guy
>
>

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