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• When the reading becomes stable, if the ORP value is
close to the calibration point, the “CFM” indicator starts
blinking; otherwise the “WRONG” indicator blinks and
the “CAL” is fixed on .
• In the first case press CFM to confirm calibration . The
meter will proceed showing the scrolling message “Press
CFM again to confirm the current buffer or right to es-
cape” (to prevent from confirming the calibration point
inadvertently) . Pressing again CFM the secondary LCD
will display the second calibration point .
• In the second case (blinking “WRONG”) the meter will
remain in the WRONG state until the reading becomes
unstable or the calibration mode is exited by pressing
the CAL key .
• For the second calibration point it is possible to choose
between 350 mV or 1900 mV . Pressing the
or
key
the value on the secondary LCD will switch between the
two possibilities .
• Once selected the second calibration point, set the
HI931001
(350 mV) or
HI8427
(350 or 1900 mV)
simulator to the same value and the calibration proceeds
as for the first point .
Note
In ORP calibration there is no time-out .
ANALOG OUTPUT CALIBRATION
The instrument can be provided with one or two analog
outputs, each of them can be calibrated .
• Connect an Ammeter or the
HI931002
calibrator to
the analog output to measure the current erogated by
the meter .
• Enter the calibration mode and move through the menu
using the
or
key until “Out 1” or “Out 2” message
appears on the primary LCD .
