Operation
handylab multi 12
24
Preparatory activities
AutoCal TEC
For this procedure, use any two technical buffer solutions (pH values at
25 °C: 2.00 / 4.01 / 7.00 / 10.01).
Note
The calibration for pH 10.01 is optimized for the SCHOTT technical
buffer solution pH 10.01. Other buffer solutions can lead to an errone-
ous calibration. The correct buffer solutions are given in the SCHOTT
catalog or in the Internet.
Note
The buffer solutions are automatically recognized by the measuring in-
strument. Depending on the instrument setting (see section
4.8 C
ONFIGURATION
), the instrument displays the relevant buffer nomi-
nal value or the current electrode voltage in mV.
Note
Skip the steps 2 and 7 if you use a pH electrode with temperature probe
or the temperature probe of a conductivity measuring cell or a D. O.
probe.
Starting the calibration
1
Connect the pH electrode to the measuring instrument.
If necessary, press the <M> key repeatedly until the status dis-
play pH (pH measurement) or U (measurement of the ORP
voltage) appears.
2
Keep the buffer solutions ready.
3
Adjust the temperature of the solution and measure the current
temperature if the measurement is made without the use of a
temperature probe (the TP display indicator is missing from the
display).
1
Press the <CAL> key. The Ct1 display and the function display
AutoCal TEC appears. The sensor symbol displays the evalu-
ation of the last calibration (or no sensor symbol in the delivery
state or after the measurement parameter has been reset).
Содержание handylab multi 12
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