ORP Multi 9310
44 ba75937e03 12/2011
6ORP
6.1 Measuring
6.1.1 Measuring the ORP
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.
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.
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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