Hi,

I have a profilux 3 and did not use the redox card and sonde for a long time. Now I bought a new sonde. I have the problem that I try to calibrate it and whatever I connect to the card (null plug, redox sonde, nothing) I always get the same adc1 and adc2 values around 125

It is a PLM-REDOX V1.00 card from 2005 with version 6.07

I tried to change the card to both ports with the same results. Any help? It looks like the card is defective

Thanks!