User Guide

16
Press the CAL DATA key again, the display
will show the first slope calibration factor as:
- CAL indicator with pH slope 1
st
value
- pH slope 1
st
calibration buffer value (BUF2)
Press the CAL DATA key again to display
the second slope calibration factor as:
- CAL indicator with pH slope 2
nd
value
- pH slope 2
nd
calibration buffer value (BUF3).
Press the CAL DATA key again to resume to
normal operation.
Note: The slope characteristic of the pH elec-
trode is directly displayed in percent-
age of the theoretical value of 58.17mV
per pH unit at 20°C.
CAL DATA
CAL
2
BUF
pH
CAL DATA
CAL DATA
CAL
3
BUF
pH
pH
°C