Thermo Scientific Orion Star A112 User manual

Thermo Scientific Orion Star A112 Benchtop and
Star A122 Portable Conductivity Meters
Reference Guide

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Thermo Scientific Orion Star A112 Benchtop and Star A122 Portable Conductivity Meters
Table of Contents
Chapter 1 Introduction ..........................................................1
Chapter 2 Meter Overview.......................................................3
Connections.......................................................... 3
DisplayInformation ................................................... 4
KeypadInformation ................................................... 5
MeterMaintenance................................................... 5
Chapter 3 Meter Setup ..........................................................7
NavigatingtheSetupMenu ............................................ 7
SetupExamples....................................................... 9
ReadTypeSelection...............................9
EnteringtheNominalCellConstantforConductivity.......9
AdjustingtheTDSFactor............................9
Chapter 4 Calibration and Measurement .........................................11
Conductivity Calibration and Conductivity/TDS Measurement ............ 11
ConductivityCalibration ...........................11
Conductivity/TDSMeasurement ....................11
Temperature Measurement and Calibration ............................. 12
TemperatureMeasurement.........................12
TemperatureCalibration ...........................12
Chapter 5 Data Storage and Review .............................................13
AutomaticDatalogwithAUTO-READ™Mode........................... 13
Manual Datalog with Continuous Read Mode ........................... 13
ViewingStoredReadings(theDataLog) ............................... 13
Chapter 6 Customer Services ...................................................15
MeterErrorCodes.................................................... 15
TroubleshootingGuide................................................ 16
Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Warranty and Registration ............................................ 16
WEEECompliance ................................................... 16
Declaration of Conformity ............................................. 17
MeterSpecifications................................................. 18
OrderingInformation................................................. 19
Chapter 7 Appendix............................................................21
Temperature Compensation and Reference Temperature. .21
TotalDissolvedSolids(TDS)........................21
AutomaticConductivityCalibration...................22
Table of Conductivity Standard Values vs. Temperature . . .22
Notes............................................................... 24

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1
Thermo Scientific Orion Star A112 Benchtop and Star A122 Conductivity Portable Meters
Chapter 1 Introduction
Thank you for your purchase of the Orion Star A112 benchtop conductivity or Star A122 portable conductivity meter.
These meters are capable of measuring conductivity in µS/cm or mS/cm; TDS in mg/L; and temperature in °C or °F.
The Orion Star A112 benchtop conductivity meters are IP54-rated. The Orion Star A122 portable conductivity meters
feature a waterproof, IP67-rating.
Please read this reference guide thoroughly. Any use outside of these instructions may invalidate your warranty and
cause permanent damage to the meter.

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3
Thermo Scientific Orion Star A112 Benchtop and Star A122 Conductivity Portable Meters
Chapter 2 Meter Overview
Connections
1. Power source:
a. Power adapter (included with Orion Star A112 benchtop conductivity meters, sold separately for Star
A122 portable conductivity meters) – Select the appropriate wall socket plug. Slide off the clear plastic
cover, and slide on the plug plate into the groove on the back of the adapter.
b. Batteries (included with and factory installed on Star A122 portable conductivity meters, sold separately
for Star A112 benchtop conductivity meters) – Select four AA batteries. Confirm that the meter is off
and remove the battery compartment cover. On the Star A122 portable meter, to remove the battery
compartment cover:
i. Loosen the screws.
ii. Release the top portion of the battery compartment from the meter (using a coin or your finger.)
iii. Release the bottom portion of the battery compartment (using a coin or your finger). Insert
batteries as shown in the battery compartment housing.
Push down on tab and lift the
battery cover
Orion Star A112 Benchtop
Remove screws
Orion Star A122 Portable
Figure 1
2. Prepare the conductivity probe according to the directions in the conductivity probe user guide. In general, this includes
rinsing the cell with distilled water.
3. Connect the appropriate item as labeled on the meter and as shown in figure 1:

4Thermo Scientific Orion Star A112 Benchtop and Star A122 Portable Conductivity 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.
AUTO Shown when automatic calibration buffers are used (100 S/cm, 1413 S/cm or 12.9 mS/cm).
Shows the battery status (more bars = more power remaining).
Blinks when power is low and the battery needs to be changed.
(Orion Star A122 Conductivity portable meter includes factory-installed batteries.)
Shown when the meter is running on AC power.
(Orion Star A112 Conductivity benchtop meter includes adapter.)
Shown when the meter is on AUTO-READ mode. Default setting. AR and unit of measure 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.
Appears during calibration and after a calibration is done.
Displayed when a reading is stored into the memory.
Displayed when viewing stored readings.
Secondary
display Upper display which shows temperature reading in measurement mode and setup menu in setup mode.
Primary display Larger, lower display showing measured value in selected mode.
Instructions Located below the primary display. These phrases aid in the setup menu and calibration modes.

5
Thermo Scientific Orion Star A112 Benchtop and Star A122 Conductivity Portable Meters
Keypad Information
Meter Maintenance
For routine meter maintenance, dust and wipe the meter with a damp cloth. If necessary, warm water or a mild water-
based detergent can be used. Meter maintenance can be performed on a daily, weekly or monthly basis, as required by
the environment in which the meter is operated. Immediately remove any spilled substance from the meter using the
proper cleaning procedure for the type of spill.
In the measurement screen: Press to take a measurement.
In the setup screen: Press to escape the setup menu.
In the calibration screen: Press to abort calibration.
Press to turn the meter on or off.
In the measurement screen:
Press to switch between modes.
In the setup screen:
Press to confirm the selection.
Press to enter the calibration mode. Press to enter the setup mode.
In the measurement screen:
Press to store the data on the screen in continuous
read mode and with data logging on.
In the setup screen:
Press to scroll up in the list of options.
In the measurement screen:
Press to see the stored data.
In the setup screen:
Press to scroll down in the list of options.

6Thermo Scientific Orion Star A112 Benchtop and Star A122 Portable Conductivity Meters
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