Labview reads gas analyser serially

[as19]

Hi,

I am using Licor IRGA 840 and 850 for data acquisition in NI Labview. I am receiving different values simultaneously when read through IRGA software and Labview software. Both these values are off by more than 10ppm. I have synchronized the baud rate, parity and stop bits but still the problem persists.

Please let me know if you have any solutions regarding this.

[Minions]

The accuracy for this equipment is listed in their manuals as:

> Better than 1.5% of reading.

You list how much it is off, but not the reading.  What is the reading?  Is 10PPM better than 1.5% of reading?

Can you show us your LabVIEW?