32
7
If calibration against the second buffer solution is not needed, press
the
key. The pH-meter calibration to one point is completed. The
display shown in Fig. 2.8 shall come up. The pH-meter shall go to step 13.
8
If calibration against the second buffer solution is required, remove
electrodes and temperature sensor from the first buffer solution and wash
them in distilled water (in two vessels in succession) and then in a volume
of the second buffer solution.
9
Place electrodes and temperature sensor in fresh second buffer solution.
Press the
key. The second buffer solution shall be identified. The
display shown in Fig. 2.6 shall come up.
Fig. 2.6
10
If pH value of the second buffer solution is not identified automatically, the
display shown in Fig. 2.3 shall come up. Refer to 2.5 of the Operation
Manual (Troubleshooting. Table 2.1).
11
If buffer solution pH value is identified automatically, it shall appear and
the meter in the left part of the screen shall be pasted. Once the meter is
pasted, the display shown in Fig. 2.7 shall come up.
Fig. 2.7
12
Press the
key. Calibration to two points is completed and the display
shown in Fig. 2.8 shall come up.
RECORD
ENTER
RECORD
ENTER
EXIT
CALIBRATION No 2
− . − − − рН
23.1
С
А
CALIBRATION No 2
9 . 197 pH
23.0
С
А