| [GMCnet] Re: No contact temp sensor [message #363920 is a reply to message #363919] |
Mon, 10 May 2021 05:25   |
GMC.LES
Messages: 505
Registered: April 2014
Karma:
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Senior Member |
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The better quality IR thermometers normally have a calibration procedure that is required each time you change the type of surface you measure. IR reflects differently dépendant on the surface. Human skin contains moisture that evaporates, thus affecting accuracy.
A machined metal surface reflects more than a cast surface. Density and colour of the surface also has an effect.
The cheap IR thermometers can only give you an approximation. Even the the good ones will be inaccurate on certain surfaces due to all the possible variables.
They are still convenient for identifying extremes, but if you are looking to be precise within +/-2° they are not the most reliable.
Les Burt
Montreal
'75 Eleganza 26'
> On May 10, 2021, at 12:46 AM, Ron Clark wrote:
>
> Only way to really tell about those non-contact IR thermometers is to immediately compare with an under the tongue thermometer. As you get older, your normal body temp gets lower. I don't know what my actual body temp is, because none of our oral thermometers are working, and I'm too cheap to buy a new one. All the IR thermometers I've been checked with read 97.4 or 97.5. Whatever the nurse at the doc's office uses gives a "reading" of "that's OK".
>
> Ron Clark
>
>
>
>> On 5/9/2021 7:15 PM, Jon Roche wrote:
>> I would probably leave them at walmart.
>>
>> If they are covid ir scanners I would not trust them. I have had my head, arms, ect scanned all sorts of times this past year and they seemed never
>> to be even remotely close to 98.6.
>>
>> I know our company bought like a batch of 100 when covid 1st started and that batch all ended up in the trash. The replacements did not seem
>> Much better. The sheet people filled out looked like a random number generator.
>>
>>
>
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