Thermo Scientific™ Orion Star™ A123 Dissolved Oxygen Portable Meter

Take simple dissolved oxygen and temperature measurements with the Thermo Scientific™ Orion™ Star A123 DO Portable Meter with easy operation for basic field testing

Brand: Thermo Scientific™

Manufacturer Part Number: STARA1235


UNSPSC: 41115611

Code: 59

Additional Details:
Additional Details: Weight: 1.36080kg

Product Code. 11651449

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Description and Specification


Description Orion Star A123 dissolved oxygen portable meter kit with polarographic DO sensor, maintenance kit, meter armor and field case
Model Orion Star A123 Dissolved Oxygen/Temperature Portable Meter
Includes Star A123 DO meter, 083005MD Orion polarographic dissolved oxygen sensor, 080513 DO maintenance kit, protective meter armor, hard-sided field case, 4 AA batteries, literature CD, printed quick start guide and meter test certificate
Range (Polarographic DO) 0.00 to 20.00mg/L
Resolution (Polarographic DO) 0.01, 0.1mg/L
Accuracy (Polarographic DO) ±0.2mg/L or ±2% of reading, whichever is greater
Percent Saturation Range (Polarographic DO) 0.0 to 200.0 % saturation
Percent Saturation Relative Accuracy (Polarographic DO) ±2 % saturation or ±2% of reading whichever is greater
Percent Saturation Resolution (Polarographic DO) 0.1, 1 % saturation
Sensor Types Polarographic dissolved oxygen sensor
Barometric Pressure Correction 450 to 850mmHg, automatic with manual entry
Pressure Range 450 to 850mmHg (manual entry)
Salinity Factor 0 to 45 ppt, automatic correction using manual entry of sample salinity
Calibration Modes Water-saturated air, manual (Winkler titration)
Range (Temperature) 0.0 to 50.0 °C, 32.0 to 122.0 °F
Resolution (Temperature) 0.1°C, 0.1°F
Accuracy (Temperature) ±0.1°C
Temperature Selection Automatic with ATC temperature probe
Temperature Probe Calibration 1 point temperature offset calibration
Channels 1
Display Type LCD
Keypad Simple with highlighted measure key, scroll and shortcut keys
Measurement Modes Dissolved oxygen as % saturation or mg/L with temperature
Stability Smart Stability and Smart Averaging
Data Management Details Internal data point memory
Data Points 50
Log Function Type Automatic data logging with Auto-Read measure mode; manual data logging with Continuous measure mode
Memory Non-volatile memory preserves log and settings
Languages English
Inputs 9 pin MiniDIN (polarographic DO sensor with built-in temperature)
Outputs None
Probe Type Polarographic dissolved oxygen probe (includes 083005MD Orion polarographic DO sensor)
Power Supply 4 AA batteries (included) or universal AC adapter (sold separately)
AC Adapter Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
Battery Life 2000 hours
Battery Type Four AA (included)
IP Rating IP-67
Certifications/Compliance CE, TUV 3-1, FCC Class A
Temperature (Metric) Operating 5° to 45° C (ambient)
Relative Humidity Range 5 to 85 %, non-condensing
Dimensions (L x W x H) 24cm x 10cm x 6.5cm (9.5 in. x 3.9 in. x 2.6 in.)
Weight (Metric) 0.5kg
Warranty 3 year meter warranty

Thermo Scientific Orion Star A123 Dissolved Oxygen Portable Meters combine simplicity with accuracy. A large LCD displays dissolved oxygen readings along with temperature. Icons provide quick updates on battery life and completed calibration status. Simple button layout and onscreen messages help with calibration and setup menu choices.
  • Large, informative screen clearly shows the main information, including DO reading in mg/L or % saturation, temperature in °C or °F, meter mode and battery life
  • Automatic temperature, manual salinity input and manual barometric pressure compensation for an accurate result
  • Don't miss a reading – AUTOREAD™ locks in the stable reading on your screen and ready indicator alerts when readings are stable
  • Two calibration options to meet your procedural requirements: water-saturated air method or a Winkler titration
  • Accepts Thermo Scientific Orion polarographic dissolved oxygen probes
  • Non-volatile memory holds up to 50 data points
  • Four AA batteries (included) provide over 2000 hours of operation or purchase the universal power adapter (sold separately) to run meter on AC power
  • Perfectly portable, waterproof and protected to take anywhere with a IP67-rated housing
  • Three year meter replacement warranty


Technical documents