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Chapter 3
Meter Setup Menus
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22
Orion Star A220 Series Portable Meter User Manual
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Channel-Specific Method, Mode and
Temperature Menus
Within the pH Channel, COND Channel and DO/RDO Channel menus are Mode and Settings
and Temperature submenus. Use the Mode and Settings menu to review and update the
measurement and calibration settings for the selected channel. Use the Temperature menu to
manually enter a sample temperature value, set the temperature units as °C or °F and perform
a temperature calibration on an ATC probe, conductivity sensor with built-in temperature or
dissolved oxygen sensor with built-in temperature. The channel menus displayed by each meter
will depend on the meter model and its measuring capabilities.
Meter Model
Orion Star A221 pH meter
Orion Star A222 conductivity meter
Orion Star A223 RDO/DO meter
Mode and Settings Menu
General Mode and Settings Options
Read Types
The read type determines how the meter displays, logs and exports measurements. Ensure the
appropriate data export and data log settings are enabled in the Instrument Settings menu
before logging or exporting measurements.
Auto-Read: Press the measure (esc) key to start a measurement. The AR icon blinks as
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the changing value stabilizes. When stable, the AR icon stops blinking and the
measurement is locked on the display until the measure (esc) key is pressed again.
o When enabled, the stable measurement is automatically saved to the data log and
exported to a printer or computer.
Continuous: Measurement values are continuously updated on the display and the
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Stabilizing or Ready icon indicates the measurement stability status.
o When enabled, press the log/print key to save a measurement to the data log and
export it to a printer or computer.
Calibration Due Alarm Setting
The calibration due alarm allows the operator to set an alarm that is triggered when a
calibration is not performed within 12 hours. Turn on the alarm beep setting in the Instrument
Settings menu to enable an audible beep when the alarm is triggered.
Channel-specific Menu
pH Channel
COND Channel
RDO/DO Channel
Channel-specific Submenus
· Mode and Settings
· Temperature
· Mode and Settings
· Temperature
· Mode and Settings
· Temperature
Thermo Scientific
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