LABEC M-PL-600 User Manual
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minutes, wait for second, press“CA L”，
the instrument will recognize which
buffer solution is it, display as well, wait the instrument judge pH sensor
response to ending point, the instrument displays as above chart, 3
calibration has been accomplished, automatically enter the pH
measurement mode, the sensor performance icon after calibration is also
displayed.
points
After 3 pints calibration, the instrument has the best measurement
precision. Especially for broadly ranged pH measurement, the
measurement errors from unlinearity will also be modified.
During pH calibration, “MTC” icon on LCD displays，to remind you
current temperature compensation method, is manually（MTC），and
please confirm the temperature of current sample, press < M+/∧>、﹤RM/
∨>key to moodily the temperature of the sample, then press
confirm the temperature imputed and start with pH sensor calibration.
8. Measurement information store, back display, clear and RS232
communication
8.1 Store measurement information manually
During PH or mV measurement, when the measurement value is
stable,（display “
”or “
”icon）， when the auto storage function of type
640 meter is set to “Off”，press< M+/∧>key，store the current measurement
value （ including measurement value number, measurement value,
temperature value （ ATC or MTC status ）、 measurement date,
measurement time），LCD will display icon
, together with measurement
value store number in around 5 minutes, then back to last measurement
status.（display date on the position of storage number display）.
8.2 Back display of measurement information
Under measurement status (PH or mV measurement），press< RM/∨
>short key，the instrument will back display of last stored measurement
data （ including measurement value number, measurement value,
temperature value （ ATC or MTC status ）、 measurement date,
measurement time）.
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