Chapter 4; Using The Ph Or Ph/Ise Channel; Meter And Electrode Preparation - Thermo Scientific Orion Star A320 Series Manual

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56 Orion Star A320 Series Portable Meter User Manual
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Using the pH or pH/ISE Channel

Use the Orion Star A321 pH meter, Orion Star A325 pH/conductivity meter or Orion Star A326
pH/RDO/DO meter to measure pH, mV, relative mV, ORP and temperature. Use the Orion Star
A324 pH/ISE meter or Orion Star A329 pH/ISE/conductivity/RDO/DO meter to measure pH, ion
concentration using an ISE (ion selective electrode), 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. Refer to the instructions in
calibration and alarm settings within the pH Channel or pH/ISE Channel setup menu and
data transfer, data log, date and time, language, sounds, display contrast, auto-shutoff, user
ID and sample ID settings within the Instrument Settings setup menu.
3. Connect all necessary electrodes, probes and sensors to the appropriate meter inputs.
a. Connect a pH, ORP or ion selective 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.
Chapter 2 Meter Basics.
Chapter 3 Meter Setup Menus to customize measurement,
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