Thermo Scientific Orion Star A111, Reference Manual

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4 Thermo Scientific Orion Star A111 Benchtop and Star A121 Portable pH Meters
Display Information
Display Icon Description
MEAS
Indicates that the meter is in the measurement mode.
SETUP
Indicates that the meter is in setup mode.
CAL
Indicates that the meter is the calibration mode.
MAN Shown when a manual calibration is being done and complete.
AUTO Shown when using automatic buffer calibration (default setting) and has been completed.
Shows the battery status (more bars = more power remaining).
Blinks when power is low and the battery needs to be changed.
Batteries included with and factory installed in the Orion Star A121 portable pH meter.)
Shown when the meter is running on AC power.
(Adapter included with the Orion Star A111 benchtop pH meter.)
Shown when the meter is on AUTO-READ mode. Default setting. AR and unit of measurement will blink until the
reading is stable. When the reading is stable it is held on the screen and AR is lit. Press to take a
new reading.
READY
Unit of measurement will blink until the reading is stable. When the reading is stable, READY is lit.
2,4,7,9,10,12
Buffer points that have been calibrated are displayed as follows:
Displayed Buffer Value 2 4 7 9 10 12
Calibrated USA Buffer Value (at 25°C) 1.68 4.01 7.00 - 10.01 12.46
Calibrated DIN Buffer Value (at 25°C) 1.68 4.01 6.86 9.18 - -
Appears after a complete calibration.
Shows the electrode condition. If the icon has a slash through it, the electrode condition is bad. Consult the
electrode user guide.
Displayed when a reading is stored into the memory.
Displayed when viewing stored readings.
Secondary
display
Shows temperature reading in measurement mode and setup menu in setup mode.
Primary display Larger, lower display shows measured value in selected mode.
Instructions
Located below the primary display. These phrases aid in the setup menu and calibration modes.