Thermo Electron CorporationVII-4 Orion Star Series Meter
pH Technique
6. Wait for the pH to stop flashing.
a. Auto Buffer Recognition – When the
pH stops flashing the meter will display
the temperature-corrected pH value for the buffer.
b. Manual Calibration – When the
pH stops flashing the meter will display the
actual buffer value read by the pH electrode. Use the and / to
change the pH value to the temperature-corrected pH value for the buffer.
7. Once the correct buffer value is shown on the meter display, press
to
proceed to the next calibration point and repeat steps 5 through 7 or press
to save the calibration.
8. The slope will be displayed before the meter returns to the measurement mode.
is displayed in the lower field and the actual electrode slope, in percent, is
displayed in the main field.
a. On a 1 point calibration use the
and / to edit the slope then
press to return to the measurement mode.
b. On the 2 or more point calibration the meter will automatically go to
measurement 2 seconds after display of .
After calibration, the electrode and meter are ready to start taking sample
measurements. Make sure that the instrument is in measurement mode and
that the pH is lit. If the is not lit, press to return to measurement mode.
If the pH is not lit, press until the arrow on the left of the display is pointing
at the top line. Then press until the pH lights. You are now ready to start
measuring.
The man display indicates manual pH calibration was
performed. The numbers on the top of the display indicate
which pH Auto buffers were used in the last calibration.
To Next Page
Loading...
