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OPERATIONAL GUIDE
IN ITIAL
PREPARATIO N
IN ITIAL
PREPARATIO N
IN ITIAL
PREPARATIO N
IN ITIAL
PREPARATIO N
IN ITIAL
PREPARATIO N
Plug the 12 VDC adapter into the power supply socket.
To prepare the instrument for use, connect the pH electrode to the BNC connector and the
temperature probe to the appropriate socket on the rear panel of the instrument. The
temperature probe is used in conjunction with the pH electrode to utilize the instrument's
ATC capability, but it can also be used independently to take temperature measurements.
If the probe is disconnected, temperature can be set manually with the UP and DOWN
arrow keys (see page 3 for details). Install electrode holder and turn the instrument ON by
pressing ON/OFF.
At start up the display will show all the used segments for a few seconds (or while the button
is held), and then will enter normal measurement mode.
After measurement switch the meter off, clean the electrode and store it with a few drops
of MA9015
MA9015
MA9015
MA9015
MA9015 storage solution in the protection cap.
The auto-off feature turns the meter off after 20 minutes of non-use. To disable this
feature, see SETUP menu on page 14.
pH
pH
pH
pH
pH MEASUREMEN TS
MEASUREMEN TS
MEASUREMEN TS
MEASUREMEN TS
MEASUREMEN TS
To take a pH measurement remove the electrode protective cap and simply submerge the
tip (4cm/ 1½") of the electrode and the temperature probe into the sample to be tested.
If necessary, press the RANGE key (Mi 151
Mi 151
Mi 151
Mi 151
Mi 151 only) until the display changes to the pH mode.
Allow for the electrode to adjust and reading to stabilize (hourglass symbol turns off).
The LCD will show the measured pH value on the primary LCD and the temperature of the
sample on the secondary LCD.
In order to take more accurate pH measurements, make sure that the instrument is
calibrated (see page 10 for details).
It is recommended that the electrode is always kept wet and rinsed thoroughly with the
sample to be measured before use. The pH reading is directly affected by temperature.
Instruction Manual Mi 150 & Mi 151 Bench Meters