Xylem WTW pH/Cond 3320, Руководство по эксплуатации

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pH/Cond 3320 pH value
ba77054d01 02/2014
21
5 pH value
5.1 Measuring
5.1.1 Measuring the pH value
NOTE
When connecting an earthed PC/printer, measurements cannot be
performed in earthed media as the values would be incorrect
.
The USB interface is not galvanically isolated.
Stability control
(AutoRead)
& HOLD function
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.
The measured parameter flashes on the display
 as soon as the measured value is outside the stability range

when the automatic Stability control is switched off.
You can activate or switch off the automatic Stability control function (see
section 8.2.1 S
YSTEM
, page 53).
To ensure the high measurement accuracy of the measuring sys-
tem, always measure with a calibrated electrode (see section 5.2
C
ALIBRATION
, page 24).
1. Connect the pH electrode to the meter.
2. If necessary, select the measured parameter with <M> .
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
24.8 °C
USB output
15.02.2014
14:15