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Thermo Scientific Orion Star A222 Conductivity Portable Meter

Part Number: STARA2220

List Price



-$84.00 (10.6%)  


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3 year meter replacement warranty

AC Adapter

Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)

Accuracy Conductivity

0.5% of reading 1 digit > 3 ?S; 0.5% of reading 0.01 ?S ? 3 ?S

Accuracy Resistivity

0.5% of reading 1 digit

Accuracy Salinity

0.5% of reading 1 digit

Accuracy TDS

0.5% of reading 1 digit

Accuracy Temperature


Alarm Output

Calibration due alarm (fixed 12 hour)


Yes, selectable

Battery Life (Average)

800 hours

Battery Type

Four AA (included)

Calibration Modes

Conductivity and temperature

Calibration Points Conductivity

Up to 5

Cell Constant

0.001 to 199.9 cm-1

Certifications Compliance

CE, TUV 3-1, FCC Class A



Data Log Function Type

Automatic data logging with Auto-Read measure mode; manual data logging with Continuous measure mode

Data Management Details

Transfer single, range or all data points to printer or computer

Data Points

1000 with date and time stamp


Orion Star A222 conductivity/TDS/salinity/resistivity portable meter

Dimensions LxWxH

24 cm x 10 cm x 6.5 cm (9.5'' x 3.9'' x 2.6'')

Display Type

Graphic LCD with backlight


Star A222 conductivity meter, 4 AA batteries, literature, computer cable and calibration test certificate


8 pin MiniDIN (conductivity sensor with built-in temperature)

IP Rating



Comprehensive with menu-specific function keys and dual purpose scroll/shortcut keys


English, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update

Measurement Modes

Conductivity, TDS, salinity or resistivity with temperature


Non-volatile memory preserves data log, calibration log and meter settings


Orion Star A222 Conductivity/TDS/Salinity/Resistivity/Temperature Portable Meter


USB, RS232

Power Supply

4 AA batteries (included) or universal AC adapter (sold separately)

Range Conductivity

0.001 S/cm to 3000 mS/cm

Range Resistivity

2 ohm to 100.0 meg-ohm

Range Salinity

0.06 to 80.00 psu, 0.05 to 42.00 ppt

Range TDS

0.001 to 200.0 ppm

Range Temperature

-5.0 to 105.0 C, 22.0 to 221.0 F

Relative Humidity Range

5 to 85 %, non-condensing

Resolution Conductivity

0.001 ?S minimum, auto ranging up to 4 significant digits

Resolution Resistivity

1 ohm or 0.1 meg-ohm, auto ranging

Resolution Salinity

0.01 psu or 0.01 ppt minimum, auto ranging

Resolution TDS

0.001 ppm minimum, auto ranging up to 4 significant digits

Resolution Temperature

0.1C, 0.1F

Salinity Measurement Modes

Practical salinity (psu)

Sensor Types

2-cell or 4-cell conductivity sensors with built-in temperature


Smart Stability and Smart Averaging

TDS Factor Range

Linear (0.02 to 9.99)

Temperature Ambient Operating

5 to 45C, 41 to 113F

Temperature Compensation

Linear, nLFn (non-linear ultra pure water) or off

Temperature Probe Calibration

1 point temperature offset calibration

Temperature Reference Options

15, 20, 25C

Temperature Selection

Manual or automatic with ATC temperature probe


3 year meter warranty


0.5 kg, 1.2 lbs

Included with Purchase

Orion Star A222 Conductivity Portable Meter

Four AA batteries (installed)

Star A222 Models with Other Options



Orion Star A222 Conductivity Portable Meter

013010MD Orion DuraProbe conductivity cell with 3m cable, K=0.475

01100710 conductivity standard pouches, 1413 μS, pack of 10

911110 rinse solution, pack of 10

Protective armor with electrode holder

Hard carrying case

Four AA batteries (installed)


STARA2225 Full Specs and Ordering Information


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All information current as of Friday, October 28, 2016