LABEC M-MIA-LA - Manual (Page 94)

Ultrasonic milkanalyser
Operation manual 04.11.09 92/107
7. PH measuring.
Measuring pH is an additional feature of the analyser and is optional.
Remove the protective rubber cap of the pH electrode. Take care to handle it
appropriate in order not to be damaged. Use de-ionized or distilled water to
rinse the electrode before usage. Fill in the sample holder with milk, put it in
the recess of the analyser and dip the pH electrode into the milk sample,
ensuring complete dip of the electrode in the sample. Stir gently for
homogenization of the sample.
Measuring can be done in two modes:
Off line by starting the menu pH & Co Meter | Measuring, when the
analyser works only as a pH meter.
On line automatic pH measuring, when measuring the rest of the sample’s
parameters.
When starting work with рН meter first connect the probe/sensor, and then
the power supply of the device.
Having in mind the characteristics of the process of pH measuring it is
necessary to dip the рН probe in the sample and then to press the button
Enter.
рН probe is knee-joint (mobile) and is adjusted towards the input pipe of the
analyser.
Move them forward in order to be possible to dip probes’ end in the milk
sample and place the sample holder in the recess of the analyser.
After starting the menu pH & Co Meter the following message appears on
the display: