wtw pH/ION 7320, Руководство по эксплуатации

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pH value pH/ION 7320
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6.2.4 Manual calibration (ConCal)
Make sure that in the sensor menu, Buffer menu, the ConCal buffer set is
selected (see section 9.1.1 S
ETTINGS FOR P
H
MEASUREMENTS
, page 66).
Use any one to five buffer solutions in ascending or descending order.
21. Wait for the measurement with stability control to be completed or termi-
nate the stability control and take over the calibration value with
<ENTER> .
The calibration display for the next buffer appears (voltage display).
22. If necessary, use <M> to finish calibration or
Continue calibrating using the next buffer with <ENTER> .
Calibration is automatically completed after the last buffer of a buf-
fer set has been measured. Then the calibration record is dis-
played.
The calibration line is determined by linear regression.
If single-point calibration was set in the menu, the calibration proce-
dure is automatically finished with the measurement of buffer solu-
tion 1 and the calibration record is displayed.
1. Connect the pH electrode to the meter.
The pH measuring window is displayed.
2. Keep the buffer solutions ready.
When measuring without temperature sensor:
Temper the buffer solutions or measure the current temperature.
3. In the measured value display, select the measured parameter pH or mV
with
<M> .
4. Start the calibration with <CAL> .
The calibration display appears.
5. Thoroughly rinse the electrode with deionized water.
6. Immerse the electrode in the first buffer solution.
pH
0.0
24.8
°C
ConCal
1
12.12.2012
12:12
Buffer
mV