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Accuracy/noise of meas. values by Dr. DAQ (parallel port)

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Accuracy/noise of meas. values by Dr. DAQ (parallel port)

Postby yuuishii » Fri Feb 25, 2011 9:35 am

Hi,

I'm using Dr. DAQ (Parallel port type) to obtain pH-titrate curves.
The measured pH and temperature -- from the external port --
seem to fluctuate according to other I/O inputs, e.g. environmental
illuminance, sound/noise, etc.
How can I suppress their noise?
Futhermore, how is the accuracy of the measured values?
Any help would be appreciated.

Thank you,

Yuu
yuuishii
 

Re: Accuracy/noise of meas. values by Dr. DAQ (parallel port

Postby ziko » Tue Mar 01, 2011 11:07 am

Hi and thank you for your email. Could you email me your plw file?

When you the readings fluctuate according to other I/OS, what kind of enviroment is the DrDaq exposed to?

In terms of accuracy you really need to calibrate it using 3 PH solutions and put the values in a scaling file.

Kind regards
Ziko

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