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  7. The sample temperature does not respond to set temperature

Discussion Category:  Thermogravimetric Analysis

The sample temperature does not respond to set temperature

When I set the linear ramp of temperature between 30-600°C, if the sample has a weight loss at about 450-500°C, the sample temperature (and also the temperature visualized on instrument display) does not follow the set temperature, and at about 500°C, goes down; but then the temperature rises up to 600°C. Is it a malfunction of the furnace or calibration loss..or what?

 

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Asked by

Lab2
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avatar placemarkReply by
Mark@uconn

First see if a furnace recalibration will fix the problem.  Sometimes you may need to run it a second time, after saving the first cal, if the furnace to sample TC difference is really far off.

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avatar placemarkReply by
LabWrench2844668

Hello,

 

If the furnace recalibration does not work, can you send me raw data. I can take a look at it and advise from there. You can emal me the data to brivas@rtinstruments.com

 

 

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avatar placemarkReply by
javy078
Hi, I have a similar problem, the sample temperature does not respond because if show a temperature around the 600ºC when I started the equipment, and it increases until the 1000ºC, more o less. I don't know what it happens with the equipment. Anybody can help me please.
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LabWrench2844668
Hi, Display these temps: Program and sample. Let me know what the program temp says when unit is started up. Thanks
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