Orion Star A222 and Star A322 Portable Conductivity Meters
5
Measurement
Press
while taking a measurement in the continuous measurement mode to freeze the display and
press
a second time to unfreeze the display and continue the measurement. Press
while taking
a measurement to manually export the measurement to the data log, if the data log is enabled in the
setup menu.
1. Ensure the measurement mode is set correctly. To set the measurement, press
to scroll through the
conductivity, TDS, salinity and resistivity measurement modes.
2. Rinse the conductivity cell electrode and any other electrodes in use with distilled water, blot dry with a
lint-free tissue and place into the sample.
3. Start the measurement and wait for it to stabilize.
a. If the meter is in
AUTO-READ
mode (default setting), press
to start the measurement. When
the
icon stops flashing, record the conductivity, TDS, salinity or resistivity and temperature of
the sample. Press
again to start a new measurement.
b. If the meter is in continuous mode, the meter will immediately start taking a measurement and
update the display whenever the measurement changes. Wait for the display to show
ready
and
record the conductivity, TDS, salinity or resistivity and temperature of the sample.
c.
Star A322 meter only
– If the meter is in timed mode, the meter will log measurements at the
preselected time interval, regardless of the measurement stability. The meter will update the display
whenever the measurement changes, so the conductivity, TDS, salinity or resistivity and temperature
of the sample can be recorded when the display shows
ready
.
4. Remove the conductivity cell from the sample, rinse with distilled water, blot dry and place into the
next sample.
5. Repeat steps 3 and 4 for all samples.
6. When all samples have been measured, store the conductivity cell according to its user guide.
Read Type Selection
1. In the measurement mode, press
.
2. Press
,
,
or
to highlight
COND Channel
and press
f3 (select)
.
3. Press
or
to highlight
Mode and Settings
and press
f3 (select)
.
4. Press
or
to highlight
Read Type
and press
f3 (select)
.
5. Press
or
to highlight
Auto
,
Continuous
or
Timed
(Star A322 meter only)
and press
f3 (select)
.
a.
Star A322 meter only
– If
Timed
is selected and the time interval needs to be changed – highlight
Timed
;
press to highlight hours (HH), minutes (MM) or seconds (SS); press
f3 (edit)
to access the numeric
entry screen; use the numeric entry screen to change the values and press
f1 (back)
when the time
interval is correct.
6. Press
to return to the measurement mode.
