OPERATION:
•
Connect the supplied 12 VDC
power adapter to the meter and
to the mains line.
•
Connect the pH and ORP elec-
trode to the BNC socket of the
meter.
•
Always remove the electrode
protective caps before taking any
measurement. If the electrodes
have been left dry, soak the tip
(bottom 2.5 cm) in rinse solution
(M10000B) for a few minutes to reactivate them.
•
Make sure that the meter has been calibrated before taking any
measurements (see Calibration Procedure).
•
Immerse the tip (2.5 cm) of the electrodes into the samples.
•
Turn the instrument on by pressing the ON/OFF key.
•
Allow the reading to stabilize and the meter will start continuous
monitoring.
•
A blinking alarm LED will indicate when the measured pH value is
higher or lower than the setpoint depending on user selection.
•
When the alarm LED is blinking, there is power in the output power
socket.
NOTE:
The output power contact has no protection fuse inside the
meter. It is recommended to protected it outside, against failure.
SETPOINT:
•
The setpoint can be selected by adjusting the knob to the desired
value.
•
The selectable range for MC125 is from
4 to 8 for pH and from -200 to 600 mV
for ORP.
•
The nature of the setpoint can be se-
lected by setting the proper switch to the
desired position (ABOVE or BELOW).
CALIBRATION PROCEDURE:
•
Remove the protective cap from the pH electrode.
•
Immerse the electrode tip into a new sachet of pH 7
calibration solution and allow the reading to stabilize.
•
Adjust the pH7 calibration trimmer (on the front) to
display "7.00 pH".
•
Open a new sachet of pH 4 calibration solution and
use a small quantity to rinse the electrode.
•
Immerse the electrode tip inside the pH 4 sachet and
allow the reading to stabilize.
•
Adjust the pH4/10 calibration trimmer (on the front) to
display "4.00 pH".
•
The calibration is now complete and the meter is ready
to take measurements.
•
It is suggested to recalibrate the meter at least
once a month, after prolonged warehousing time
and after pH electrode replacement.
INSTALLATION PROCEDURE:
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - TestEquipmentDepot.com
