Instruction manual

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2.5 Display & Keypad
2.5.1 Display Overview
The Liquid Crystal Display (LCD) of Alpha pH 550 has two alpha-numerical displays
(Upper and a Lower).
• Upper display: Measured pH, mV or relative mV value are
displayed when the Monitor is in normal operation (measurement)
mode.
• Lower display: Measured temperature value is displayed when the
Monitor is in normal operation (measurement) mode. In pH
Calibration mode, standard pH buffer values are displayed here:
while measured mV values are displayed in the ORP Calibration
mode.
The two displays indicate function names, options & settings in Setup mode. Refer
‘Appendix 2 – Abbreviations Used in LCD’ for more details.
The LCD also consists of various mode indicators, status annunciators and unit of
measurement indicators.
SETUP MEAS CAL
ERR
pH
°C
READY
-8.8.8.8
-8.8.8.8
A
TC
pH
R.mV
°F