Xylem PH1970i PORTABLE PH METER - Manual (Page 23)

pH 1970i Calibration
23 ba75675e01 01/2007
z Immerse the pH electrode in the second buffer solution to continue the
two-point calibration.
z When measuring without a temperature sensor:
Enter the temperature of the third buffer solution with <
▲ > < ▼ >.
z Press <RUN/ENTER>. The AutoRead measurement begins. The
electrode voltage (mV) or the buffer nominal value appears on the
display.
z When the measured value is stable, the instrument shows the value of
the slope and the evaluation of the three-point calibration.
z Press <RUN/ENTER>. The instrument displays the value of the
asymmetry.
z Switch to the measuring mode with <M>.
-
m cm S/
% mg/ l
Sal
O
S pH 5 8 8 pH mV/
1 pH
cm S/
mg/ l
Sal
O
S pH 2 mV