2 display – Thermo Fisher Scientific Alpha pH 800 User Manual
Page 17

10
4.1.2 Display
The LCD display features two numerical displays that show status messages
and measured values for easy, quick reference. The display provides short-text
information for setting parameters and configuration.
• MEAS: Measurement mode
• SETUP: Set-up mode of function groups
• CAL: Calibration mode of pH/ORP
• READY: Comes on after a successful
calibration
• HOLD: Relay position and current output
are frozen
• ATC: Comes on in the ATC mode.
Disappears in the Manual temperature
Compensation mode.
“ATC” flashes if the temperature probe is
faulty in its ATC mode
• Display for RELAY A/B. Green LED indicates measured
value within limit while RED LED indicates measured
value outside limit.
• Alarm display if limit value overshoot or the ATC probe
fails.
7.00
25.0
ATC
SETUP
HOLD
CAL
MEAS
CON
READY
pH
o
C