User Manual

The relative mV value calibration may be used to perform a single point

calibration with an ORP standard or remove the contribution of the

reference electrode to display mV equivalent to a SHE.

• Press CAL when the instrument is in Relative mV measurement

mode. The relative mV value and the temperature values are

displayed.

• Use the ARROW keys if you want to change the displayed relative

mV value.

• Press Zero function key if you want Rel mV reading to be zero

(Relative mV offset equals the mV reading).

• When the reading is stable in mV range and the Relative mV offset

is inside the offset window (±2000 mV), the Confirm function key

is displayed.

• Press Confirm to confirm relative mV calibration. The instrument will

return to measurement mode.

• If the absolute mV reading is out of range or the Relative mV offset

is out of the offset window, “Wrong relative offset” message is

displayed.

Change the input value or the Relative mV value to complete the

calibration process.

Note: If a Rel mV offset calibration exists, CLR function key is

displayed. Press CLR if you want Rel mV offset to be 0.0 mV.

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