Alternative Certified Cell Constant Entry Calibration Procedure - Thermo Scientific Orion Star A220 Series User Manual

Chapter 5 Using the Conductivity Channel
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44 Orion Star A220 Series Portable Meter User Manual
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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.
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.
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