Sartorius PT-15 Bedienungshandbuch Seite 10

Multi-Point Calibration
1.4 Press the Cal key to initiate calibra-
tion. Immerse pH sensor and
ATC/Temp sensor in a pH7.00(6.86)
buffer solution. The selected buffer
icon will flash. Press the enter key.
The buffer icon will remain on,
and the calibration icon will flash
until the unit detects a stable reading.
When a stable reading is reached,
the calibration icon will stop flashing
and momentarily display the sensor
efficiency. The first point has been
calibrated and the unit is ready for the
second buffer.
Note: For multi-point calibrations,
the pH 7.00 (6.86) buffer solution
must be used first.
1.5 Remove the sensor from the first
buffer. Rinse in distilled water, then
rinse with a little of the second buffer
and immerse in the second buffer.
1.6 The remaining two buffer icons
will flash, indicating that calibration
should be continued. Press the enter
key, the second buffer icon will remain
on. The calibration icon will flash
until the unit detects a stable reading.
When a stable reading is reached,
the calibration icon will stop flashing
and display the sensor efficiency. The
second point has been calibrated and
the unit is ready for the third buffer.
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[NOTE: For two-point calibration,
press the mode key to save both
calibration points and to exit the
calibration mode. The two point
calibration is complete.]
1.7 Remove the sensor from the second
buffer. Rinse in distilled water, then
rinse with a little of the third buffer
and immerse in the third buffer.
1.8 The last buffer icon will flash.
Press the enter key. The third buffer
icon will be on, and the calibration
icon will flash until the unit detects a
stable reading. When a stable reading
is reached, the calibration icon will
stop flashing and display sensor
efficiency. The third point has been
calibrated. The unit will automatically
exit the calibration mode. Three point
calibration is complete.