Ph Value; Measuring; Measuring The Ph Value - wtw VWR MU 6100 H Operating Manual

MU 6100 H
Stability control
(AutoRead )
Criteria for a stable
measured value
ba77077e06 05/2021
6

pH value

6.1

Measuring

6.1.1

Measuring the pH value

NOTE
When connecting an grounded PC/printer, measurements cannot be
performed in grounded media as the values would be incorrect.
The USB interface is not galvanically isolated.
To ensure the high measurement accuracy of the measuring sys-
tem, always measure with a calibrated electrode (see section 6.2
C
ALIBRATION
1. Connect the pH electrode to the meter.
2. If necessary, select the measured parameter with
3. When measuring without temperature sensor:
– Temper the test sample, or measure the current temperature.
– Enter the temperature value in the menu.
4. Immerse the pH electrode in the test sample.
The measured value is checked for stability (automatic stability control).
The display of the measured parameter flashes.
5. Wait for a stable measured value.
The display of the measured parameter no longer flashes.
pH
6.949
15.02.2014
Menu
The stability control function (AutoRead) continually checks the stability of the
measurement signal. The stability has a considerable impact on the reproduc-
ibility of measured values (see section 11.2.3 A
page 71).
The Stability control function checks whether the measured values are stable
, page 29).
24.8 °C
14:15
<MODE>
.
S
UTOMATIC TABILITY CONTROL
pH value
,
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