pHotoFlex
®
pH
Operation
15
ba75977d04
11/2018
Measuring the ORP
Calibration
Calibrate
at regular intervals
after connecting another electrode
when the sensor symbol flashes:
– after the calibration interval has expired
– after voltage interruption (e.g. empty batteries, empty
rechargeable battery)
1
Submerse the ORP electrode in the sample.
2
Press the
<M>
key (short pressure) repeatedly until the
measured parameter,
pH
is selected.
pH & ORP
\
ORP
157
mV
25.0
°C
[AR]
01.02.04 15:12
1
Press the
<M>
key (long pressure) repeatedly until the
pH
measuring mode is selected.
2
Press the
<CAL/ZERO>
key.
The menu-guided calibration begins.
Follow the instructions on the display.
