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Chapter 5
Using the Conductivity Channel
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66
Orion Star A320 Series Portable Meter User Manual
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Conductivity Calibration Editing
When the calibration summary is displayed, the calibration editing option can be selected to fix
individual points without having to perform a full recalibration.
1. In the calibration summary display (after step 5 in the Conductivity Calibration Procedure),
press the f3 (cal edit) key.
2. Press the p or q key to highlight a calibration point to edit and press the f2 (select) key.
3. Press the p or q key to highlight Remeasure, Edit or Delete and press the f2 (select) key.
a. If Remeasure is selected, repeat steps 2 through 4 in the Calibration Procedure.
b. If Edit is selected, press the f3 (edit) key, use the popup number entry screen to enter
a new conductivity standard value, press the f2 (done) key and then press the f2
(accept) key. Select another calibration point to edit or press the f1 (back) key.
c. If Delete is selected, the calibration point will be deleted.
4. The meter will display an updated calibration summary and export the data to the calibration
log. Press the f1 (meas) key to proceed to the measurement mode or press the f2 (print)
key to export the calibration data to a printer or computer.
Alternative Certified Cell Constant Entry Calibration Procedure
When using the cell constant entry calibration procedure, enter the certified cell constant (K)
value that is printed on the conductivity sensor cable or certificate of calibration.
1. Press the f1 (cal) key to start the calibration.
a. If more than one channel is displayed in the measurement mode, press the p or q
key to highlight Conductivity-Channel and press the f2 (select) key.
2. Press the f2 (cell K) key.
3. Wait for the conductivity value on the meter to stabilize and then press the f3 (edit) key to
access the popup number entry screen and enter the certified cell constant value.
a. Press the p, q, t or u key to highlight a number or decimal point, press the f3
(enter) key to select the highlighted item and repeat until the desired value is shown at
the top of the screen.
b. Press the f2 (done) key to save the value and exit the number entry screen.
c. Press the f2 (accept) key to accept the entered cell constant value.
4. Press the f2 (accept) key to save and end the calibration and export the data to the
calibration log. The meter will automatically proceed to the measurement mode.
5. The conductivity measurement system is now calibrated. Verify the calibration by reading a
known conductivity standard or according to your SOP.
Thermo Scientific
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