55
54
PROCEDURE FOR pH 302
• Switch the pH 302 on while pressing CAL.
The "CAL" indicator will be lit. The sec-
ondary LCD section will show "
0.0
°C".
• Immerse the tem-
perature probe in the
vessel with the ice
and water and wait
for a few minutes.
• As soon as the
reading is stable
the "CFM" indica-
tor will start blink-
ing.
• Press CFM to con-
firm the calibration.
• Immerse the tem-
perature probe in the
vessel with hot water
and wait for a few
minutes.
• The secondary LCD
will display "
50.0
°C"
with the "CAL" indi-
cator.
• As soon as the read-
ing is stable the
"CFM" indicator will
start blinking.
°C
CAL
CFM
0 °C
(32 °F)
°C
CFM/
50 °C
(122 °F)
°C
°C
CAL
CFM
CAL
ON
• The secondary LCD
will display "
0.0
°C"
with the "CAL" indi-
cator.
• As soon as the
reading is stable the
"CFM" indicator will
start blinking.
• Press the CFM key
to confirm the cali-
bration.
• Immerse the tem-
perature probe in
the vessel with hot
water and wait for a
few minutes.
• The secondary
LCD will display
"
5 0 . 0
°C" with
the "CAL" indica-
tor.
• As soon as the read-
ing is stable the
"CFM" indicator will
start blinking.
• Press CFM to con-
firm the calibration.
• The temperature calibration is complete
and the meter will return to the normal
operating mode.
°C
CAL
CFM
CFM
50 °C
(122 °F)
°C
CFM
°C
CAL
CFM
