Thermo Scientific STARA1120, STARA1125, STARA1220, STARA1225 User Manual

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

Reference Guide

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The speciﬁcations, descriptions, drawings, ordering information and part numbers within this document are subject to change without notice.

This publication supersedes all previous publications on this subject.

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

Display Information ................................................... 4

Keypad Information ................................................... 5

Meter Maintenance ................................................... 5

Chapter 3 Meter Setup ..........................................................7

Navigating the Setup Menu ............................................ 7

Setup Examples....................................................... 9

Read Type Selection ...............................9

Entering the Nominal Cell Constant for Conductivity.......9

Adjusting the TDS Factor............................9

Chapter 4 Calibration and Measurement .........................................11

Conductivity Calibration and Conductivity/TDS Measurement ............ 11

Conductivity Calibration ...........................11

Conductivity /TDS Measurement ....................11

Temperature Measurement and Calibration ............................. 12

Temperature Measurement.........................12

Temperature Calibration ...........................12

Chapter 5 Data Storage and Review .............................................13

Automatic Datalog with AUTO-READ™ Mode........................... 13

Manual Datalog with Continuous Read Mode ........................... 13

Viewing Stored Readings (the Data Log) ............................... 13

Chapter 6 Customer Services ...................................................15

Meter Error Codes.................................................... 15

Troubleshooting Guide................................................ 16

Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Warranty and Registration ............................................ 16

WEEE Compliance ................................................... 16

Declaration of Conformity ............................................. 17

Meter Specifications................................................. 18

Ordering Information ................................................. 19

Chapter 7 Appendix............................................................ 21

T emperat ure Compensa t ion and Ref erence Temperature. .2 1

Total Dissolved Solids (TDS)........................21

Automatic Conductivity Calibration...................22

Table o f Conductiv ity Standard V alues v s. Temperature . . .22

Notes...............................................................24

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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.

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

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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.

Orion Star A112 Benchtop

Push down on tab and lift the battery cover

Orion Star A122 Portable

Remove screws

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:

Figure 1

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

Display Information

Display Icon Description

MEAS

SETUP

CAL

MAN

AUTO

READY

Indicates that the meter is in the measurement mode.

Indicates that the meter is in setup mode.

Indicates that the meter is the calibration mode.

Shown when a manual calibration is being done.

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.

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.

Secondary display

Primary display

Instructions

Displayed when viewing stored readings.

Upper display which shows temperature reading in measurement mode and setup menu in setup mode.

Larger, lower display showing measured value in selected mode.

Located below the primary display. These phrases aid in the setup menu and calibration modes.

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

Keypad Information

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.

Press to enter the calibration mode. Press to enter the setup mode.

In the measurement screen: Press to switch between modes. In the setup screen: Press to conﬁrm the selection.

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.

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 see the stored data. In the setup screen: Press to scroll down in the list of options.

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

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