Strange temperature readings with TC-08

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Sam Smith
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Strange temperature readings with TC-08

Post by Sam Smith » Fri Jul 30, 2010 4:15 am

So I'm running 7 type K TC's into one USB TC-08 (running v5.21.2). After ~24 hours of regular operation, all the TC's started oscillating gently around a central temperature instead of recording the actual temperature increases. I've attached a .jpg of the results.

Is this an issue with the TC-08? The thermocouples? The software? Any ideas?

Running Windows XP Pro SP3

Cheers,

Sam
chart1.JPG

ziko
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Re: Strange temperature readings with TC-08

Post by ziko » Mon Aug 02, 2010 10:42 am

HI was the device disconnected at any time or something interrupt its operation?

Could you send you data file please to support@picotech.com

Kind regards
Ziko

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Sam Smith
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Re: Strange temperature readings with TC-08

Post by Sam Smith » Tue Aug 03, 2010 12:29 am

Sent through the .plw file to support.

To the best of my knowledge the device was not disconnected or disrupted at any time during the ~72hour run.

Cheers,

Sam.

ziko
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Re: Strange temperature readings with TC-08

Post by ziko » Wed Aug 04, 2010 10:02 am

Hi,

I have looked at the attachment , does the TC-08 still work? If it still works it maybe that at some point in the test a voltage was being injected into one of the thermocouples causing all the readings to go a bit funny, if that is the case try disconnecting one by one to find out which one is causing the problem.

Kind regards
Ziko

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Sam Smith
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Re: Strange temperature readings with TC-08

Post by Sam Smith » Sun Aug 08, 2010 11:41 pm

It should still work as it was brand new 3 weeks ago.

I'll try disconnecting the TC's one by one to see if that is causing a problem.

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