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Orion Star
™
Plus Conductivity Meter Quick Start Guide
Conductivity Automatic Calibration
with One Standard
1. Press the power key to turn on the meter. See 1.
2 In the measurement mode, press the line select key
until the
icon points to the middle line and press
the up arrow key until the μS/cm or mS/cm icon is
shown. See 2.
3. Select the Thermo Scientifi c Orion conductivity
standard (100 μS/cm, 1413 μS/cm or 12.9 mS/cm) that
has the closest conductivity to the expected sample
value. See 3.
4. In the setup mode, enter the nominal cell constant
value for the conductivity probe. See the Nominal
Cell Constant Selection section. See 4. The
meter will use the nominal cell constant value
to recognize the conductivity standard during an
automatic calibration.
5. Rinse the conductivity probe (and stirrer probe, if in
use) with deionized water and blot dry with a lint-free
tissue. See 5.
6. Insert the conductivity probe into the conductivity
standard and gently stir. See 6. If the stirrer probe
is in use, press the stir key to start and stop stirring
(benchtop models only).
7. Press the calibrate key. See 7.
8. The meter will show the manual calibration display
for about fi ve seconds. See 8. Do not press any keys.
9. After about fi ve seconds, the meter will proceed to
the direct and automatic calibration display. Wait for
the μS/cm or mS/cm icon to stop fl ashing and the
icon to start fl ashing. The meter should display the
conductivity standard value at 25 ˚C. See 9.
10. Press the measure key to save and end the
calibration. See 10. The calculated cell constant
will be displayed and the meter will proceed to the
measurement mode.
Nominal Cell Constant Selection
1. In the measurement mode, press the setup key.
2. Press the up arrow key until COnd is displayed on
the top line.
3. Press the line select key to move the
icon to the
middle line. Press the up arrow key until CELL is
displayed on the middle line.
4. Press the line select key to move the
icon to
the bottom line. To enter the nominal cell constant,
press the digit key until the fi rst digit to be changed
is fl ashing, press the up/down arrow keys to
change the value of the fl ashing digit and continue
to change the digits until the meter displays the
correct value. Once the value is set, press the digit
key until the decimal point is in the correct location.
0.475 cm
-1
is the default setting.
5. Press the line select key to move the
icon to the
top line and press the measure key.
Reference Temperature Selection
1. In the measurement mode, press the setup key.
2. Press the up arrow key until C0nd is displayed on
the top line.
3. Press the line select key to move the
icon to the
middle line. Press the up arrow key until trEF is
displayed on the middle line.
4. Press the line select key to move the
icon to
the bottom line. Press the up arrow key to select
5 °C, 10 °C, 15 °C, 20 °C or 25 °C as the reference
temperature. 25 °C is the default setting.
5. Press the line select key to move the
icon to the
top line and press the measure key.
Automatic Datalog Feature
1. In the measurement mode, press the setup key.
2. Press the up arrow key until LOg is displayed on
the top line.
3. Press the line select key to move the
icon to the
middle line. Press the up arrow key until AUt0 is
displayed on the middle line.
4. Press the line select key to move the
icon to the
bottom line. Press the up arrow key to select OFF
or On. OFF is the default setting.
5. Press the line select key to move the
icon to the
top line and press the measure key.
English
Conductivity Measurements
AUTO-READ™ is the default measurement mode.
Continuous or timed measurement modes can be
selected in the meter setup menu.
Turn on the automatic datalog feature to send
measurements to the meter datalog or connect the
meter to a printer or computer.
1. Rinse the conductivity probe (and stirrer probe, if
in use) with distilled water, blot dry with a lint-
free tissue and insert into the sample.
2. If the meter is in the AUTO-READ mode, press
the measure key to start a reading. Once the
reading is stable, the AR icon will stop fl ashing
and the display will freeze. Press the measure
key to take a new measurement. If the stirrer
probe is in use, it will start stirring when the
measure key is pressed and stop stirring
when the AR icon stops fl ashing (benchtop
meters only).
If the meter is in the continuous or timed mode,
the meter will immediately start taking readings
and continuously update the display. Once the
reading is stable, the μS/cm or mS/cm icon will
stop fl ashing. If the stirrer probe is in use, press
the stir key to start and stop stirring (benchtop
meters only).
3. Remove the conductivity probe (and stirrer probe,
if in use) from the sample, rinse with distilled
water, blot dry with a lint-free tissue, insert into
the next sample and repeat step 2 or see the
probe user guide for recommended storage.
Printing Data
If the automatic datalog feature is on, the meter will
log a measurement every time the measure key is
pressed (AUTO-READ and continuous modes) or the
meter will log the measurement at the preset time
interval (timed mode).
1. Connect the meter to a printer or computer and
verify the baud rate and output settings in the
meter setup menu.
2. In the measurement mode, press the log
view key.
3. Press the up arrow key to select SEnd to print
the datalog or CALS to print the calibration log.
4. Press the log view key to send the selected data
to the printer or computer.
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