Thermo Fisher Scientific Alpha pH 600 RF (In the process of updating the brand guideline & product image) - Manual (Page 18)

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2.5.2 Key Functions
ENT
ESC
PH/ORP RF Transmitter
Alpha pH 600
CAL
Key Description
CAL
Brings directly into the Calibration entry mode. The security code
must be selected to enter the calibration mode or view only mode.
While in pH Measurement mode, press CAL to enter pH
Calibration entry mode.
While in mV Measurement mode, press CAL to enter mV
Calibration entry mode.
ENT
To confirm your calibration values in Calibration mode.
To confirm selections in SETUP mode.
While in MEAS mode, pressing ENT takes you directly to SETUP
entry mode. The security code must be selected to enter the
calibration mode or view only mode.
To scroll through the various submenus
To increment/decrement values or toggle between options
(in the SETUP/CAL modes)
When pressed together, serves as escape function to return to
MEAS mode from any point (CAL or SETUP modes).