60
Adjustmentandstart-up
At the end of calibration of the pH sensor, two types of messages may be displayed:
Tab. 1 :
Warning and error messages during pH sensor calibration
message
"span" value
"offset" value
possible
cause
recommended action
"Warning:Span/
offset out of
range"
50 mV/pH < span < 53 mV/pH
or
63 mV/pH < span < 65 mV/pH
–60 mV < Offset
< –35 mV
or
35 mV < Offset
< 60 mV
Error in
the buffer
solution.
→
Use the correct buffer
solution.
The
probe has
reached
halfway in
its lifespan
→
The values can be
saved or not.
"Error:Span/
offset out of
range"
< 50 mV/pH
or
> 65 mV/pH
< –60 mV
or
> 60 mV
The probe
must be
replaced.
→
Replace the probe.
→
Calibrate the device
again when the new
probe is in place
English
Type 8202 ELEMENT
