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Calibration procedure

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Calibration prcedure

Postby Vincenzo » Mon Nov 21, 2005 7:36 pm

Can I calibrate another time in the future the TC-08 or I have to send it to You every time i need the calibration?
Is the calibration also inside a software routine?
:?
I read that driver provides for cold junction compensation. What means?
Vincenzo
 

Postby Sarah » Tue Nov 22, 2005 9:57 am

Hi

Thank you for your post.

Thermocouples by nature need to be referenced. The reading they give is referenced to a "cold junction" in order to calculate the temperature. In many traditional setups this is a junction kept at 0 degC, thus the name cold junction. In our units this is in fact a thermistor inside the unit. All calculations are made referenced to this.

Calibration does need to be done here by us as we program the calibration data into the unit.

Hope this helps

Best Regards
Sarah
 

Cold junction

Postby EE-DK » Fri Dec 22, 2006 1:19 pm

Sarah wrote: Thermocouples by nature need to be referenced. The reading they give is referenced to a "cold junction" in order to calculate the temperature. In many traditional setups this is a junction kept at 0 degC, thus the name cold junction. In our units this is in fact a thermistor inside the unit. All calculations are made referenced to this.


Does that mean theTC-08 unit needs to be kept at a stable exactly temperature point during measurements or will any fluction (+/- 2 deg. C)measured at the cold junction channel also influence on the 8 thermocouple inputs readings?
EE-DK
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Postby Sarah » Thu Jan 18, 2007 3:11 pm

Hi

Thank you for your post.

Yes the TC-08 unit itself should be kept in a stable temperature to ensure more accurate readings. The probes obviously can be in any temperature within their range.

Best Regards
Sarah
 


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