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Data Logging with Four NI 9211 Modules (16 Thermocouples)

I am fairly new to LabVIEW and I only know the basics of it. I am trying to log temperatures of different areas using 16 thermocouples (with four NI 9211 modules) for about four hours. I need help setting up a VI to do this project.

 

Can someone please advice me on which functions should I use?

Sample rate? Number of samples?

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Have a look at the shipped examples ! 

How often do you want to log the data?  A common samplerate for logging is once per second or once per minute...

TC measurements are often prone to line noise , so I would recommend to read 1k samples at 1kSPS (1kHz samplerate) and mean the data of one channel. (decimate by 1000 with mean.. see signal processing vis)

Since the internal clock reference will a have a small difference to the PC clock you should expect a increasing difference if you show up all data 'live' in a graph ...

 

Greetings from Germany
Henrik

LV since v3.1

“ground” is a convenient fantasy

'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'


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