ATI Dissolved Ozone calibration

This brief video shows the key strokes required to make an adjustment to the calibration of an ATI Q46 dissolved ozone monitor. The probe is not installed and there is no adjustment to be made. The result of an actual measurement and adjustment would look a little different but the screens and button sequence would be the same. Before getting to this process, there would need to be an ozone water sample taken and a reagent based test performed that indicates a need to make an adjustment to the calibration of the monitor.

[URVH]

If I'm having a fault 'Low Input' and a Sensor current of -26nA, and I can't calibrate it, would it mean my senor is dead?