pH value Multi 9310
28 ba75937e03 12/2011
5 pH value
5.1 Measuring
5.1.1 Measuring the pH value
NOTE
When connecting a grounded PC/printer, measurements cannot be
performed in grounded 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
z as soon as the measured value is outside the stability range
z when the automatic Stability control is switched off.
You can start the Stability control manually at any time, irrespective of the set-
ting for automatic Stability control (see section 9.5.3 A
UTOMATIC STABILITY CON-
TROL, page 71) in the System menu.
1. Connect the IDS pH sensor to the meter.
The pH measuring window is displayed.
2. If necessary, select the measured parameter with <M>.
3. Adjust the temperature of the solutions and measure the current tem-
perature if the measurement is made without a temperature sensor.
4. If necessary, calibrate or check the IDS pH sensor.
5. Immerse the IDS pH sensor in the test sample.
Info
01.07.2011
08:00
USB output
1. Freeze the measured value with <AR>.
The [HOLD] status indicator is displayed.
The HOLD function is active.
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