SCHOTT handylab pH 11, Руководство по эксплуатации

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Operation handylab pH 11
20 ba75366e04 01/2011
Displaying
calibration data
Each time the instrument is switched on, the calibration data are shown on
the display for a short time (see section 4.1 S
WITCHING ON THE MEASURING IN
-
STRUMENT
). In order to view the calibration data, switch the measuring instru-
ment off and switch it on again.
Calibration
evaluation
After the calibration, the measuring instrument automatically evaluates the
current status of the electrode. The asymmetry and slope are evaluated sep-
arately. The worst evaluation appears on the display.
Preparatory
activities
Display Asymmetry
[mV] Slope
[mV/pH]
-15 ... +15 -60.5 ... -58
-20 ... +20 -58 ... -57
-25 ... +25 -61 ... -60.5
or
-57 ... -56
Clean the electrode according
to the electrode operating
manual
-30 ... +30 -62 ... -61
or
-56 ... -50
E3
Eliminate the error according to
chapter 6 W
HAT TO DO IF
...
< -30 or
> 30 < -62 or
> -50
1 Switch on the measuring instrument with <ON/OFF> .
2 Connect the pH electrode to the measuring instrument.
3 Keep the buffer solutions ready.
4 Adjust the temperature of the solutions and measure the cur-
rent temperature if the measurement is made without temper-
ature sensor.