4
Using the pH Channel
Use the Orion Star A221 pH meter to measure pH, mV, relative mV, ORP and temperature. The
following chapter provides instructions on connecting electrodes, calibrating the system and
measuring these parameters.
Meter and Electrode Preparation
1.
Familiarize yourself with general meter operation and prepare the meter and accessories
according to the instructions in
2.
calibration settings within the pH Channel setup menu and data transfer, data log, date and
time, language, sounds, display contrast and auto-shutoff settings within the Instrument
Settings setup menu.
3.
Connect all necessary electrodes, probes and sensors to the appropriate meter inputs.
a.
Connect a pH or ORP electrode to the BNC meter input.
b.
Connect an ATC temperature probe to the 8 pin MiniDIN meter input.
c.
Connect a reference half-cell electrode to the pin tip meter input (for use when a half-
cell sensing electrode with BNC connector is used).
4.
Prepare all connected electrodes for use as instructed in the electrode manuals.
C H A P T E R 4
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Orion Star A220 Series Portable Meter User Manual
Thermo Scientific
Summary of Contents for Orion Star A220 Series
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