Extech Instruments pH300, User Manual

Page: 7 / 12

pH300 V1.0 7/09
7
Parameter P1 (pH Buffer Solution Setting)
1. From the pH measurement mode, press and hold
MODE
for at least 2 seconds and
then release, the ‘
P1
’ icon appears on the LCD
2. Use the
CAL
or the
M+/RM
keys to toggle through the three (3) selections: USA (for
use in the USA or Europe, NIS (for NIST calibration purposes), and CH (for use in
China)
3. Momentarily press
MODE
to move to the next parameter (P2), or press
ENTER
to
return to the normal measurement mode
Parameter P2 (Distilled Water Temperature Compensation Setting)
1. From the P2 menu, use the
CAL
or the
M+/RM
keys to turn this feature ON or OFF
2. Momentarily press
MODE
to move to the next parameter (P3), or press
ENTER
to
return to the normal measurement mode
3. See the Note below the Table in the previous section for more details on parameter P2
Parameter P3 (Distilled Water with Ammonia Temperature Compensation Setting)
1. From the P3 menu, use the
CAL
or the
M+/RM
keys to turn this feature ON or OFF
2. Momentarily press
MODE
to move to the next parameter (P4) or press
ENTER
to
return to the normal measurement mode
3. See the Note below the Table in the previous section for more details on parameter P3
Parameter P4 (Temperature Measurement Units Setting)
1. From the P4 menu, use the
CAL
or the
M+/RM
keys to turn this feature ON or OFF
2. Momentarily press
MODE
to move to the next parameter (P5) or press
ENTER
to
return to the normal measurement mode
Parameter P5 (Display Backlight Setting)
1. From the P5 menu, use the
CAL
or the
M+/RM
keys to select 0, 1, 3, or 6 minute
default backlighting time
2. Momentarily press
MODE
to move to the next parameter (P6) or press
ENTER
to
return to the normal measurement mode
Parameter P6 (Automatic Power OFF Setting)
1. From the P6 menu, use the
CAL
or the
M+/RM
keys to select a 0, 10, or 20 minute
Auto Power OFF time
2. Momentarily press
MODE
to move to the next parameter (P7) or press
ENTER
to
return to the normal measurement mode
Parameter P7 (Restore Factory Default Settings)
1. From the P7 menu, use the
CAL
or the
M+/RM
keys to select ON (reset the factory
default settings) or OFF (cancel edit)
2. Momentarily press
MODE
to move to the first parameter (P1) or press
ENTER
to return
to the normal measurement mode
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