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VWR Collection PH-130 pH-meter instruction manual v1.0x
If the meter does not detect the buffer‘s value, it will signalise an error after
pressing the
button with a tripple warning sound. In such case check
the solution value or the electrode as it may be broken.
Only the pH buffers values detected during calibration are calculated, the
other values recorded earlier do not influence the reading.
After finishing calibration in the first buffer rinse the electrode and
temperature probe (if used) in distilled water and start calibration in next
buffers repeating the last point of the activities described above.
10.2. Calibration with manual temperature compensation
In case of the temperature probe breakdown, calibration with manual
temperature compensation may be proceeded. To start this calibration,
disconnect the temperature probe. It switches the meter to manual
compensation. Next to the entered (not measured) temperature value instead
of the
symbol
the symbol will appear. Entering the temperature value for
the manual compensation is described in the point 15.2. Than act identically
as in case of calibration with automatic temperature compensation, excluding
the temperature probe connection.
In order to enter the temperature value, press the window and in the
open screen press the MANUAL TEMP. window, the numerical keyboard will
appear to enter the value and confirm with the button.
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