inoLab
®
Multi 9620 IDS pH value
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5 pH value
5.1 Measuring
5.1.1 Measuring the pH value
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 start the Stability control manually at any time, irrespective of the set-
ting for automatic Stability control (see section 11.7.3 A
UTOMATIC STABILITY
CONTROL, page 107) in the System menu.
The sensor connection and the USB-B (USB Device) interface are
galvanically insulated. This facilitates interference-free measure-
ments also in the following cases:
Measurement in grounded test samples
Measurement with several sensors connected to one
Multi 9620 IDS in one test sample
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.
1. Freeze the measured value with <AR>.
The [HOLD] status indicator is displayed.
The HOLD function is active.
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