Now I started to install my KH Director, and when I tried to calibrate pH electrode... I see "Error" (Calibration failed...)
I tried to connect other one pH electrode too (from Profilux), the same situation...
Looks like KH Director doesn’t see pH electrode.
Yes - but you should be able to calibrate every pH electrode with BNC connections. You calibrate them vertically. If it does not either sense the normal electrode - it is probably not the directors pH electrode that is broken. Have you checked that the BNC connection has "click" into its position ?