horiba LAQUAact D-74, Instruction Manual

Page: 44 / 112

mV, ORP measurement
28 HORIBA
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mV, ORP measurement
The mV measurement measures the electromotive force between the electrode and the
sample by using a pH electrode. The measured value can be used to understand the
status of the electrode after using the standard solution.
The ORP measurement measures the ORP (oxidation-reduction potential) of the sample
by using an ORP electrode.
In the measurement mode, press the
key to change the measurement parameter to
"mV".
mV and ORP can be measured using channel 1 of the instrument.
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Setting the instrument
• Setting the temperature display (default: ATC)
Automatic temperature measurement function can be used by using combination
electrode equipped with a temperature sensor or connecting a temperature
compensation electrode. When mV or ORP are measured, the temperature sensor
measures the temperature of the sample and displays the value on the instrument. If
automatic temperature measurement is not used or a temperature connector is not
connected to the instrument with ATC set, arbitrary temperature set in the instrument is
displayed. This cannot be set separately from the automatic temperature compensation
setting for pH.
1. Press the key to enter the setting mode.
2. Press the keys to select the "TEMP" (temperature setting) and then press
the key.
key
key