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Thermo Scientific Orion Star A329 Portable pH/ISE/Conductivity/RDO/DO Meter Reference Guide
Chapter 4 pH, RmV and ORP Calibration
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can be exported from the meter to a printer or computer.
pH Calibration
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sample pH and are one to four pH units apart. Prepare the pH electrode according to the instructions in the electrode
use guide. Connect the pH electrode and any other electrodes to be used (ATC probe, reference electrode) to the meter.
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Note: In most calibration screens,
press
f1 (esc)
to return to the measurement mode without saving the calibration.
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f1 (cal)
. In dual and multi channel measurement displays, press
or
to
highlight
pH/ISE – Channel
and press
f2 (select)
.
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into the pH buffer.
3. When the electrode and buffer are ready, press
f3 (start)
.
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a. Press
f2 (accept)
to accept the displayed value.
b. Press
f3 (edit)
to access the numeric entry screen and edit the value.
i. Press
,
,
or
to highlight a number, decimal point or negative sign; press
f3 (enter)
to select the highlighted item and repeat until the value at the measured temperature is
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ii. Press
f2 (done)
to exit the numeric entry screen.
iii. Press
f2 (accept)
to accept the entered value.
1SFTT
f2 (next)
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press
f3 (cal done)
to save and end
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a. If a one point calibration is performed, press
f2 (accept)
to accept the displayed slope value or press
f3 (edit)
to access the numeric entry screen, enter the slope value and press
f2 (accept)
.
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Press
f1 (meas)
to proceed to the measurement mode or press
f2 (print)
to proceed to the measurement mode and export
the data to a printer or computer.
