wtw pH/ION 7320, Руководство по эксплуатации, Страница: 35 / 104

pH/ION 7320 pH value
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Continuing with two-
point calibration
7. When measuring without temperature sensor:
Enter the temperature of the buffer with
<

><

> .
8. Start the measurement with <ENTER> .
The measured value is checked for stability (stability control). The [AR]
status indicator is displayed. A progress bar is displayed and the display
of the measured parameter flashes.
9. Wait for the end of the measurement with stability control or accept the
calibration value with
<ENTER> .
The calibration display for the setting of the nominal buffer value
appears.
10. Set the nominal buffer value for the measured temperature with
<  ><  > .
11. Accept the set calibration value with <ENTER> .
The calibration display for the next buffer appears (voltage display).
12. If necessary, finish the calibration procedure as a single-point calibration
with
<M> .
The calibration record is displayed.
For single-point calibration , the instrument uses the Nernst slope
(-59.2 mV/pH at 25 °C) and determines the zero point of the elec-
trode.
pH
0.0
24.8
°C
ConCal
7.000
12.12.2012
12:12
Buffer
mV
AR
pH
7.000
24.8
°C
ConCal
1
12.12.2012
12:12
Buffer


13. Thoroughly rinse the electrode with deionized water.