Thermo Scientific™ Orion Star™ A123 Dissolved Oxygen Portable Meter

Take simple dissolved oxygen and temperature measurements with this portable meter with easy operation for basic field testing.

Catalog Number	Mfr. No.	Description	Includes
13-645-516	Thermo Scientific™ STARA1230	Orion Star A123 dissolved oxygen portable meter	Star A123 DO meter, 4 AA batteries, literature CD, printed quick start guide and meter test certificate
13-645-518	Thermo Scientific™ STARA1235	Orion Star A123 dissolved oxygen portable meter kit with polarographic DO sensor, maintenance kit, meter armor and field case	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
13-303-209	Thermo Scientific™ STARA1236	Orion Star A123 dissolved oxygen portable meter kit with polarographic DO sensor (3 meter cable), maintenance kit, meter armor and field case	Star A123 DO meter, 083010MD Orion polarographic dissolved oxygen sensor with 3 meter cable, 080513 DO maintenance kit, protective meter armor, hard-sided field case, 4 AA batteries, literature CD, printed quick start guide and meter test certificate

Description

Take simple, routine dissolved oxygen and temperature measurements with the Thermo Scientific™ Orion Star™ A123 Dissolved Oxygen Portable Meter. This instrument is easy-to-use and budget-friendly, designed for basic dissolved oxygen analysis in the field. Calibrate polarographic DO probes using water-saturated air or custom value using Winkler titration. Quickly navigate setup menus and ensure consistent calibrations using the simple keypad layout and on-screen text prompts. Use the included electrode stand to easily place sensors in samples and simplify storage.

Thermo Scientific Orion Star A123 dissolved oxygen portable meters are a simple, economical solution for your routine outdoor sample analysis. Featuring an emphasized measure key, selectable read modes and measurement stability indicator, our basic Orion Star A123 dissolved oxygen meters are designed to deliver measurements you can trust at an affordable price.

• Measure dissolved oxygen in percent saturation or mg/L with temperature using polarographic DO probes
• Calibrate using water-saturated air or custom value (Winkler titration)
• Automatically compensate DO readings using ATC temperature, manual salinity input and manual barometric pressure
• Simplified, easy-to-read display shows main measurement with temperature, stability indicator and electrode condition icon
• User-friendly operation with basic calibration text prompts
• Easily recall calibration data for procedure checks
• Non-volatile memory preserves 50 point internal data log and meter settings, even with loss of power
• Flexible power options with AA batteries or optional universal power adapter
• IP67-rated housing is waterproof for rugged field operation
• Meter kits include hard-sided field case and protective meter armor with electrode holders, adjustable wrist/belt strap and built-in meter stand
• Meters offer CE, TUV 3-in-1 and FCC Class A certifications and 3-year replacement warranty

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Specifications

• Barometric Pressure Correction: 450 to 850mmHg, automatic with manual entry
• Measurement Modes: Dissolved Oxygen (% Saturation), Dissolved Oxygen (mg/L with Temperature)
• Range (Polarographic DO): 0.00 to 20.00 mg/L
• Resolution (Polarographic DO): 0.01, 0.1mg/L
• Pressure Range: 450 to 850mmHg (manual entry)
• Temperature (Metric) Range: 0.0°C to 50.0°C
• Accuracy (Temperature): ±0.1°C
• Temperature Probe Calibration: 1 point temperature offset calibration
• Memory: Non-volatile memory preserves log and settings
• Log Function Type: Automatic data logging with Auto-Read measure mode; manual data logging with Continuous measure mode
• Inputs: 9 pin MiniDIN (polarographic DO sensor with built-in temperature)
• IP Rating: IP-67
• Dimensions (L x W x H): 24 cm x 10 cm x 6.5 cm (9.5 in. x 3.9 in. x 2.6 in.)
• Weight (English): 2 lb.
• Warranty: 3 Year Meter Warranty
• Keypad: Simple with highlighted measure key, scroll and shortcut keys
• Model: Orion Star A123 Dissolved Oxygen/Temperature Portable Meter
• Percent Saturation Relative Accuracy (Polarographic DO): ±2 % saturation or ±2% of reading whichever is greater
• Channels: 1
• Stability: Smart Stability and Smart Averaging
• Temperature (Metric) Operating: 5°C to 45°C (ambient)
• Battery Type: Four AA (included)

• Outputs: None
• Sensor Types: Polarographic dissolved oxygen sensor
• Percent Saturation Range (Polarographic DO): 0.0 to 200.0 % saturation
• Accuracy (Polarographic DO): ±0.2mg/L or ±2% of reading, whichever is greater
• Calibration Modes: Water-saturated air, manual (Winkler titration)
• Resolution (Temperature): 0.1°C (0.1°F)
• Temperature Selection: Automatic with ATC temperature probe
• Display Type: LCD
• Data Points: 50
• Data Management Details: Internal data point memory
• Certifications/Compliance: CE, TUV 3-1, FCC Class A
• AC Adapter: Universal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
• Weight (Metric): 0.5 kg
• Relative Humidity Range: 5 to 85 %, non-condensing
• Percent Saturation Range Polarographic DO: 0.0 to 200.0 % saturation
• Languages: English
• Percent Saturation Resolution (Polarographic DO): 0.1, 1 % saturation
• Power Supply: 4 AA batteries (included) or universal AC adapter (sold separately)
• Salinity Factor: 0 to 45 ppt, automatic correction using manual entry of sample salinity
• Temperature (English) Operating: 41°F to 113°F (ambient)
• Battery Life: 2000 hours