13
E. mV Offset
1.
Turn the unit on. In mV mode, press
“Clear”
key for 5
seconds, all LCD elements will lit up. The meter clears all
calibration values stored in internal memory.
2.
Connect the ORP electrode to the BNC connector of the unit,
“MAN” and “mV” icons will lit up.The "WAIT" icon begins to
flash.
3.
Rinse the ORP probe in distilled water and immerse it in the
standard solution. Then press and hold
“Stand”
key for 2
seconds to calibrate. The “CAL” and “RmV” icons will lit up.
According to the mV (RmV) value displayed, press the
“Up”
and
“Down”
keys to adjust the display value to the same
value as the standard solution. Press the
“Slope/Enter”
key
to save and complete the calibration.
4.
Press and hold
“Mea./Eff.”
key for about 5 seconds to
display the new electrode offset.
F. mV (RmV) Measurements
a. Measurement in the mV (RmV)-AUTOLOCK mode.
1.
Connect the optional combination ORP electrode to the BNC
connector of the unit.
2.
Press
“Mode”
key until “mV” or “RmV” icon, “MAN”, “AUTO”
icons lit up. The "WAIT" icon begins to flash.
3.
Rinse electrode with distilled water and immerse it in sample
to be measured. Remove any air bubbles trapped around the
probe by shaking or stirring the probe.
4.
Press the
“Mea./Eff.”
key. The “WAIT” icon will start flashing.
The unit is waiting for a stable reading. The display will track
the mV (Rmv) value as sensed by the ORP electrode.
5.
When the “WAIT” icon disappears and the “LOCK” icon
appears, the meter will not respond to further changes from the
sample. The mV (RmV) value is the sample reading.
[
Note:
For samples that are inherently unstable, the unit will
not AUTOLOCK. In this case, use the mV (RmV) NON-
AUTOLOCK mode for measurements.]
b. Measurement in the mV (RmV) NON-AUTOLOCK mode.
1.
Connect the optional combination ORP electrode to the BNC
connector of the unit.
