Thermo Fisher Scientific Alpha pH 550 - Manual (Page 17)

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2.5.2 Key Functions
ENT
ESC
PH/ORP RF Transmitter
Alpha pH 600
CAL
Key Description
CAL Enter Calibration mode.
ENT
Enter Setup mode
Access sub screens (parameters) within a group of settings in
Setup mode
Confirm (save) setup parameters and numerical values
Start/Confirm calibration in Calibration mode.
Select a group of settings in Setup mode.
Select parameters and increment/decrement numerical values in
Setup and Calibration modes.
(When pressed continuously, speed of value increment/decrement
increases)
Returns to Measurement mode when both keys are pressed
simultaneously.
Alpha pH 550
pH Monitor