Incorrect infrared temp reading

Martin Owner/Technician New York Posted   Latest  

It is quite coincidental that only a few days ago we spoke about battery testing tool/procedure. My Midronics EXP800 suddenly does incorrect infrared readings of the battery and clearly, that will affect the accuracy and basis for testing. I mean like out to lunch temperatures !! Has anyone had this issue ?? Is there a parts breakdown from the manufacturer that I can repair this tool ?? or software update Or would I need to send it in for service ??

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Benjamin Diagnostician
Connecticut
Benjamin
   

IR temperature readings can vary depending on the distance to the target and the reflectivity of the surface. For example, when testing heated seats, we put masking tape on the seat then measure the temperature of the tape. This eliminates differences in surface reflectivity. Here's an interesting paper on the subject. Regarding battery temperatures, maybe it's a difference between a shiny…

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Michael Technical Support Specialist
California
Michael
 

Thanks for the link Benjamin. Very interesting.

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Matthew Owner/Technician
Oregon
Matthew
 

How out to lunch are we talking here? tens of degress or hundreds. I too would recommend some test spots on some other items to see if your readings are actually because of reflectivity or something. Using tape or dusting it with foot powder or baby powder is a good way to get some of that shine off and get a better reading. The shine can pick up temperatures that are behind you even so a hot…

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Martin Owner/Technician
New York
Martin
 

Thanks team, I never did take that into consideration. Let me run a few examples and get back to u all. I will use my handheld infrared thermometer as a comparison.

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Rudy Technician
Utah
Rudy
 

I tired testing with and with out the infrared temp reading several years ago on a few dozen vehicles. with the batteries at various temperatures. The test results always came back the same, with and with out a temp reading. I stopped using that function altogether….

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Benjamin Diagnostician
Connecticut
Benjamin
 

On the Toyota/Lexus tester, requires the temp reading, though. Scan my hand?

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Martin Owner/Technician
New York
Martin
 

This is my first use for the day.

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Benjamin Diagnostician
Connecticut
Benjamin
 

Yeah, that's a pretty wild discrepancy. Apologies, I assumed you were talking just a few degrees difference.

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Rudy Technician
Utah
Rudy
 

Ben- try it. See if it changes your results.

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Benjamin Diagnostician
Connecticut
Benjamin
   

Interesting. Cooler, the battery tester calculates a lower CCA on the same battery within a couple of minutes. 84°F (the back of my hand) vs 101°F (the battery) both hot off a test drive.

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Martin Owner/Technician
New York
Martin
 

I will have to reach out to Midronics technical support. BTW Benjamin, what is the tool or software being displayed in your response ??

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Benjamin Diagnostician
Connecticut
Benjamin
 

Midtronics DSS-5000

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Martin Owner/Technician
New York
Martin
 

Hmmmm Nice !!

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Martin Owner/Technician
New York
Martin Resolution
 

I was able to reach Midronics tech support and an RMA was prepared to return the tool. $199 was quoted for repair and calibration but should the cost exceed that the tool will be replaced for the same cost. I should be sending it off by the end of this week lastest. Thanks for all the support and advice. Martin

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