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Internal Calibration for Laser Temperature Gauges

PABSR

Inactive Registered Visitor
#1
Hello to everybody!!

I need some ideas on how we could internally calibrate laser temperature gauges. We use these devices for measuring In Process temperatures when mixing rubber.

We use these daily by checking surface temperatures of batches. The appropriate temperature allows better mixing and extrusion.

Thank you in advance!
 
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BradM

Staff member
Admin
#3
So are you talking about infra-red type devices?

Here are some calibrators available from Fluke-Hart Scientific:

http://us.flukecal.com/products/tem.../infrared-calibrators/41804181-precision-infr

Not sure about the price range on these.

However... I do know there are an awful lot of uncertainty variables that need to be controlled/accounted for. Consider all the variance from angling the thermometer, changing the horizontal/vertical distances, etc.

So.. you could get one of these calibrators; and offset its calibration recall from your test instruments recall.

Once you get it in, spend a lot of time doing studies and tests to determine the optimal method of testing. While not perfect, I would think you can develop a testing process to detect when one of the units is operating significantly outside its normal parameters. :)
 

PABSR

Inactive Registered Visitor
#4
Thank you Stijloor and Brad M.
Yes they are infrared type devices.
I will try to get some $$ approved to get the Fluke calibrators :agree:, but if not I was thinking that I could build up a fixture with a determined height to hold the laser thermometer, and place a piece of steel under water, heat it at the same temperature and at the same times, and take the temperatures exactly in the same spot. The level of water would be the same always as well as the temperature, and the steel piece. Also the stand height where I will place the laser will always be at the same height. I need to check everyday if the readings are off by 5 degrees, so I thought this could be good alternative, with a low cost.
Thank you.::thanx:
 
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