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HYDRO’pH
®
,
HYDR’ORP
®
,
HYDRO’pH Duo
®
and
HYDRO’pH/ORP
®
instructions
Calibration of pH 4:
CAUTION:
To perform a calibration of pH 4, it is imperative to start with the
calibration of the standard liquid pH=7.00.
Process:
=> => => …
The value shown is the pH value to correct …
Press again on « Cal » during 5 seconds until you see on the display « PH7 »… then
press again on « Cal » to display « PH4 »…
5s => => =>
… Calibration in progress
Upon completion of calibration, the controller resumes normal operation and
displays pH = 4.00.
If calibration error, the controller displays:
NOTE:
It is possible to calibrate the pH sensor with another reagent reference
as the pH = 10 for example.
pH calibration with another reagent:
Example with pH=10
Process:
=> => => …
The value shown is the pH value to correct…
Press again on « Cal » during 5 seconds until you see on the display « pH7 »… then
press again on « Cal » to display « pH4 »…
Put the sensor in the
standard reagent pH=4.00
Wait for stabilization of
the controller display.
When the value is
stabilized, perform the
following operation …
pH=4