Hanna Instruments ph 300 Benutzerhandbuch
5
4
Keyboard on the Left
• COMM to display the current baud rate
for RS232.
Keyboard on the Right
•
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°C and
"
"
"
"
"
°C to manually set tempera-
ture (when the temperature probe is not
connected) and to select the calibration
buffer, the baud rate, the command pre-
fix.
connected) and to select the calibration
buffer, the baud rate, the command pre-
fix.
• CAL to enter and exit the calibration mode.
After the pH calibration, to enter the cali-
bration date, use this key to toggle be-
tween month, day and year.
bration date, use this key to toggle be-
tween month, day and year.
• CAL DATA to display the date of last pH
calibration. This also displays the offset
and the slope values expressed in mV.
and the slope values expressed in mV.
• CFM to confirm calibration values and to
confirm baud rate and command prefix
during communication setting mode.
during communication setting mode.
• MR to recall the stored value.
• MS to hold and memorize the measured
value. The last reading will be frozen on
the display until the key is released. At
the same time this reading is stored in the
memory.
the display until the key is released. At
the same time this reading is stored in the
memory.
• RANGE to select the measurement range
(pH or mV).
FUNCTIONAL DESCRIPTION pH 300
THE FRONT PANEL
• ON to turn the meter on
• OFF to turn the meter off
• Power LED to confirm the meter is on
CFM
RANGE
CAL DATA
MR
CAL
MS
°C
°C
pH METER
pH300
COMM
CFM
RANGE
ON
ON
OFF
OFF
CAL DATA
MR
CAL
MS
°C
°C
pH METER
pH300
COMM
m
s
s
1
2
3
2
3
Rel mV
mV
°C
ppm
ppm
pH
pH
DATE TIME
INTV
CAL
LOG
MEM
CFM
WRONG
BUF
m
s
s
1
2
3
2
3
Rel mV
mV
°C
ppm
ppm
pH
pH
DATE TIME
INTV
CAL
LOG
MEM
CFM
WRONG
BUF