2 measuring the ph value, Measuring the ph value – Xylem handylab pH 12 User Manual
Page 17
handylab pH 12
Operation
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ba75368e04
01/2011
The temperature measurement is absolutely essential for a reproducible pH
measurement. If the measurement is made without a temperature sensor,
proceed as follows:
4.2.2
Measuring the pH value
Setting the
resolution
The measuring instrument shows the pH value with a resolution of 0.01 or
0.001. (Default setting is 0.01). To change the resolution, press the <M> key
while pressing the <RUN/ENTER> key.
1
Measure the current temperature of the test sample using a
thermometer.
2
Enter the temperature on the instrument: Set the temperature
value of the test sample using <
▲ > <▼>.
1
Perform the preparatory activities according to section 4.2.1.
2
Immerse the pH electrode in the test sample.
3
Press the <M> key until pH appears on the status display. The
pH value appears on the display.
mV/pH
mol/L
8
Auto Store
TempError
RCL
LoBat
AutoCal DIN
CalError
ARng AR
AutoCal TEC ConCal
Time
Baud
Day.Month No.
Ident
Year
1
U
%
°F
S
mg/L
% ppm
ISE
8
4
2
2
99
6
°C
TP
pH