Thermo Scientific STARA1117, STARA1210, STARA1215, STARA1110, STARA1116 User Manual
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Thermo Scientific Orion Star A111 Benchtop and
Star A121 Portable pH Meters
Reference Guide
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Thermo Scientific Orion Star A111 Benchtop and Star A121 Portable pH 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...................................................... 10
Automatic pH Buffer Recognition Selection............10
Read Type Selection ..............................10
Reviewing pH Calibration Slope Data .................10
Chapter 4 Calibration and Measurement .........................................11
pH Calibration and Measurement ...................................... 11
pH Calibration...................................11
pH Measurement ................................11
mV Measurement and RmV & ORP Calibration and Measurement.......... 12
mV Measurement................................12
RmV and ORP Calibration..........................12
RmV and ORP Measurement .......................12
Temperature Measurement and Calibration ............................. 13
Temperature Measurement.........................13
Temperature Calibration ...........................13
Chapter 5 Data Storage and Review .............................................15
Manual Datalog with Continuous Read Mode ........................... 15
Automatic Datalog with AUTO-READ
Viewing the Data from the Last Calibration ............................. 16
Viewing Stored Readings (the Data Log)................................ 16
Chapter 6 Customer Services ................................................... 17
Meter Error Codes.................................................... 17
Troubleshooting Guide................................................ 18
Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Warranty and Registration ............................................ 18
WEEE Compliance ................................................... 18
Declaration of Conformity ............................................. 19
Meter Specifications................................................. 20
Ordering Information ................................................. 21
™
Mode............................ 15
Chapter 7 Appendix ...........................................................23
Automatic pH Buffer Recognition Feature..............23
Electrode Condition Icon...........................23
Notes...............................................................24
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Chapter 1 Introduction
Thank you for your purchase of the Orion Star A111 benchtop pH or Star A121 portable pH meter. These meters
are capable of measure pH, raw millivolts (mV), relative millivolts (Rmv), oxidation-reduction potential (ORP) and
temperature.
The Orion Star A111 benchtop pH meters are IP54-rated. The Orion Star A121 portable pH 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 A111 Benchtop and Star A121 Portable pH Meters
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Chapter 2 Meter Overview
Connections
1. Power source:
a. Power adapter (included with Orion Star A111 benchtop pH meters, sold separately for Star A121
portable pH 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 A121 portable meters, sold separately for Star
A111 benchtop meters) – Select four AA batteries. Confirm that the meter is off and remove the battery
compartment cover.
To remove the battery compartment cover:
Insert batteries as shown in the battery compartment housing.
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).
Orion Star A111 Benchtop
Push down on tab and lift the
battery cover
Figure 1
Orion Star A121 Portable
Remove screws
2. Prepare the pH electrode according to
the electrode instructions.
3. Connect the appropriate items as
labeled on the meter and as shown in
figure 1.
Thermo Scientific Orion Star A111 Benchtop and Star A121 Portable pH Meters
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Display Information
Display Icon Description
MEAS
SETUP
CAL
MAN
AUTO
READY
2,4,7,9,10,12
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 and complete.
Shown when using automatic buffer calibration (default setting) and has been completed.
Shows the battery status (more bars = more power remaining).
Blinks when power is low and the battery needs to be changed.
Batteries included with and factory installed in the Orion Star A121 portable pH meter.)
Shown when the meter is running on AC power.
(Adapter included with the Orion Star A111 benchtop pH meter.)
Shown when the meter is on AUTO-READ mode. Default setting. AR and unit of measurement 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.
Buffer points that have been calibrated are displayed as follows:
Displayed Buffer Value 24791012
Calibrated USA Buffer Value (at 25°C) 1.68 4.01 7.00 - 10.01 12.46
Calibrated DIN Buffer Value (at 25°C) 1.68 4.01 6.86 9.18 - -
Secondary
display
Primary display
Instructions
4
Appears after a complete calibration.
Shows the electrode condition. If the icon has a slash through it, the electrode condition is bad. Consult the
electrode user guide.
Displayed when a reading is stored into the memory.
Displayed when viewing stored readings.
Shows temperature reading in measurement mode and setup menu in setup mode.
Larger, lower display shows measured value in selected mode.
Located below the primary display. These phrases aid in the setup menu and calibration modes.
Thermo Scientific Orion Star A111 Benchtop and Star A121 Portable pH 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 A111 Benchtop and Star A121 Portable pH Meters
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