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OPERATION
Connect the supplied 12 VDC power adapter to the
controller and to the mains.
Make sure the controller has been calibrated
before taking any measurements (see Calibration
Procedure).
Immerse the tip (4 cm) of the Conductivity probe
into the sample.
Turn the instrument on by pressing the ON/OFF key.
Wait for thermal equilibrium to be reached and the
controller will start continuous monitoring.
Set the BELLOW / ABOVE alarm activation switch in
the desired position.
A blinking alarm will indicate when the measured
EC or TDS value is lower/higher than the setpoint
(in accordance the BELLOW / ABOVE switch).
Note: The output power contact has no protection
fuse inside the controller. It is recommended to
protected it outside, against failure.
SETPOINT
The setpoint can be selected by adjusting the
central front knob to the desired value.
The selectable range for MC311 is from 0.8 to
2.8 mS/cm.
CALIBRATION PROCEDURE
Clean the probe with alcohol and let it dry (if a more
thorough cleaning is required, brush the metal pins
with fine sandpaper and then rinse with water).
Open a sachet of M10031B (1413 µS/cm) conductivity
calibration solution and immerse the probe, making
sure that metal pins are completely submerged.
Turn the controller on by pressing the ON/OFF key.
Wait until the reading stabilize for temperature
variations, and then adjust the EC/TDS calibration
trimmer on the front panel with the supplied
screwdriver until the display shows: "1.4" mS/cm.
The calibration is now complete and the controller
is ready for use.
The instrument should be re-calibrated at least
once a month, or when the probe is changed.
INSTALLATION PROCEDURE
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