inoLab
®
Multi 9620 IDS ORP
ba77173e04 12/2017 43
6ORP
6.1 Measuring
6.1.1 Measuring the ORP
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
setting 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
IDS ORP sensors are not calibrated. However, you can check IDS
ORP sensors using a test solution.
1. Connect the ORP sensor to the meter.
The ORP measuring window is displayed.
2. Adjust the temperature of the solutions and measure the current tem-
perature if the measurement is made without a temperature sensor.
3. Check the meter with the ORP sensor.
4. Immerse the ORP sensor in the test sample.
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