I got a new toy... a non-contact thermometer.
I also have a cheap oven thermostat and I would like to check and calibrate
it, and my oven.
I have a friend in the restaurant trade and he would like his big Blodgett
Convection ovens checked too.
I wonder if I put a chunk of angle iron, say 3x3x4, in the preheated oven
for 30 minutes, and then took its reflected temp, if that would be a valid
check on our ovens thermostats?
Any ideas. . . . . ? thanks



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theChas. wrote:
> I got a new toy... a non-contact thermometer.
> I also have a cheap oven thermostat and I would like to check and calibrate
> it, and my oven.
> I have a friend in the restaurant trade and he would like his big Blodgett
> Convection ovens checked too.
> I wonder if I put a chunk of angle iron, say 3x3x4, in the preheated oven
> for 30 minutes, and then took its reflected temp, if that would be a valid
> check on our ovens thermostats?
> Any ideas. . . . . ? thanks
>
>
>
Depends, does your non-contact thermometer have an emissivity adjustment?

"George" > wrote in message
news
> theChas. wrote:
>> I got a new toy... a non-contact thermometer.
>> I also have a cheap oven thermostat and I would like to check and
>> calibrate it, and my oven.
>> I have a friend in the restaurant trade and he would like his big
>> Blodgett Convection ovens checked too.
>> I wonder if I put a chunk of angle iron, say 3x3x4, in the preheated
>> oven for 30 minutes, and then took its reflected temp, if that would be a
>> valid check on our ovens thermostats?
>> Any ideas. . . . . ? thanks
> Depends, does your non-contact thermometer have an emissivity adjustment?
********** What the heck is that???? I have no idea....thanks



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On Fri, 28 Mar 2008 10:42:13 -0600, "theChas."
> wrote:

>
>"George" > wrote in message
>> Depends, does your non-contact thermometer have an emissivity adjustment?
>********** What the heck is that???? I have no idea....thanks

It's better known as an infrared thermometer to the rest of us.
http://centralpowertools.com/library...eter20725L.jpg

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theChas. wrote:
> "George" > wrote in message
> news
>> theChas. wrote:
>>> I got a new toy... a non-contact thermometer.
>>> I also have a cheap oven thermostat and I would like to check and
>>> calibrate it, and my oven.
>>> I have a friend in the restaurant trade and he would like his big
>>> Blodgett Convection ovens checked too.
>>> I wonder if I put a chunk of angle iron, say 3x3x4, in the preheated
>>> oven for 30 minutes, and then took its reflected temp, if that would be a
>>> valid check on our ovens thermostats?
>>> Any ideas. . . . . ? thanks
>> Depends, does your non-contact thermometer have an emissivity adjustment?
> ********** What the heck is that???? I have no idea....thanks
>
>
>
In order to calibrate something you need to have an accurate measurement
device. There is nothing magically accurate about non contact
thermometers just because they have a digital readout.

One of the main sources of error in non contact measurement is the
emissivity of the object you are measuring. A good non contact
thermometer will have an emissivity adjustment to compensate for that
effect.

"theChas." > wrote in message
.. .
>I got a new toy... a non-contact thermometer.
> I also have a cheap oven thermostat and I would like to check and
> calibrate it, and my oven.
> I have a friend in the restaurant trade and he would like his big Blodgett
> Convection ovens checked too.
> I wonder if I put a chunk of angle iron, say 3x3x4, in the preheated
> oven for 30 minutes, and then took its reflected temp, if that would be a
> valid check on our ovens thermostats?
> Any ideas. . . . . ? thanks

Boiling water. 212 defree F at sea level, adjust according to your altitude
by subtracting 1 degree per 500 feet.

Paul