Calculation PSU and DENSITY(kg/l) do not match for (virtual)conductivity probe

[mdanielse]

Hello GHL,

I noticed something strange on my Profilux3 EX

I have 1 conductivity probe, and I have set it to show PSU.
I have set a second virtual conductivity probe and this one I have set to show density (kg/l)

But the 2 measurement values do not match.

The display shows 34,9 PSU and 1.0248 kg/l at a temperature of 26,1 Celsius. (see screenshot)
I would expect 34,9 PSU and something around 1.0231 kg/l at 26,1 Celsius.

I know that there can be a little bit of a difference, due to the calculation method you use but this is to much of a difference. This has nothing to do with the chosen calculation method. It almost seems that you somehow mixed up density and specific gravity.

Please give me some advice on this, which of the two values is correct?.... PSU or Density(kg/l), or is the density not density but specific gravity. But specif gravity is a dimensionless quantity is has no kg/l

Please advice...................

With kind regards,
Martin

This is what my P3 shows
p3ex.JPG

This is what I would expect
EXPECTEDVALUES.JPG