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HYDRO’pH
®
,
HYDR’ORP
®
,
HYDRO’pH Duo
®
and
HYDRO’pH/ORP
®
instructions
5-2
Commands of keyboards and displays
1)
Devices keyboard
Key « Set »: Allows validation of parameters
Key « Cal »: Allows the entry of calibration modes
Key «
+
»: Increases or selects the value of the parameter
Key «
-
»: Decreases or selects the value of the parameter
NOTE:
Compositions of keys can be performed to enter into specific
operations.
2)
Display and LED (Light Emitting Diode)
Depending on devices, 4 or 8 LEDs can be used:
LED « Set »: (Yellow) Indicates an operation is being
LED « Cal »: (Yellow) Indicates that a calibration procedure is being
LED « Alarm »: (Red) Indicates any alarm
LED « Dos »: (Yellow) Indicates a pump is activated
And for HYDRO’pH/ORP
®
version:
LED « pH »: (Yellow) Indicates the value shown is the pH
LED « mV »: (Yellow) Indicates the value shown is the ORP
LED « pH pump »: (Yellow) Indicates the pH pump is activated
LED « Oxyd. Pump »: (Yellow) Indicates the oxidizing pump is activated
NOTE:
When handling the key, metering pumps are stopped!
▲ See sections « Operating mode »