Specifications
Barometric Pressure Correction400 to 850mmHg, automatic using built-in barometer or manual entry
DescriptionOrion Star A223 RDO/DO portable meter
OutputsUSB, RS232
IncludesStar A223 RDO/DO meter, 4 AA batteries, literature CD, printed quick start guide, computer interface cable and meter test certificate
Measurement ModesDissolved Oxygen (% Saturation), Dissolved Oxygen (mg/L with Temperature and Barometric Pressure)
Sensor TypesRDO optical dissolved oxygen sensor or polarographic dissolved oxygen sensor
Range (Polarographic DO)0.00 to 90.00 mg/L
Percent Saturation Range (Polarographic DO)0.0 to 600.0 % saturation
Resolution (Polarographic DO)0.01, 0.1mg/L
Accuracy (Polarographic DO)±0.2mg/L or ±2% of reading, whichever is greater
Pressure Range400 to 850mmHg
Calibration ModesWater-saturated air, air-saturated water, manual (Winkler titration), zero point
Temperature (Metric) Range0.0°C to 50.0°C
Resolution (Temperature)0.1°C (0.1°F)
Accuracy (Temperature)±0.1°C
Temperature SelectionAutomatic with ATC temperature probe
Temperature Probe Calibration1 point temperature offset calibration
Display TypeGraphic LCD with Backlight
Backlight OptionYes, selectable
MemoryNon-volatile memory preserves data log, calibration log and meter settings
Data Points1000 with date and time stamp
Log Function TypeAutomatic data logging with Auto-Read measure mode; manual data logging with Continuous measure mode
Data Management DetailsTransfer single, range or all data points to printer or computer
Alarm OutputCalibration due alarm (fixed 12 hour)
Inputs9 pin MiniDIN (RDO optical or polarographic DO sensor with built-in temperature)
Certifications/ComplianceCE, TUV 3-1, FCC Class A
IP RatingIP-67
AC AdapterUniversal 50-60 Hz, 100-240 VAC power adapter (sold separately, Cat. No. 1010003)
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 (Metric)0.5 kg
Weight (English)1.2 lb.
Relative Humidity Range5 to 85 %, non-condensing
Warranty3 Year Meter Warranty
Percent Saturation Range Polarographic DO0.0 to 600.0 % saturation
KeypadComprehensive with menu-specific function keys and dual purpose scroll/shortcut keys
LanguagesEnglish, Spanish, French, Italian, German and Chinese; Portuguese and Korean available with software update
Accuracy (RDO)±0.1mg/L up to 8mg/L, ±0.2mg/L from 8 to 20mg/L, ±10% of reading up to 50mg/L
Range (RDO)0.00 to 50.00 mg/L
Methods10 per channel with password protection
ModelOrion Star A223 RDO Optical/Dissolved Oxygen/Temperature Portable Meter
Percent Saturation Relative Accuracy (RDO)±2 % saturation ≤ 200 % saturation, ±10 % saturation > 200 % saturation
Percent Saturation Resolution (Polarographic DO)0.1, 1 % saturation
Percent Saturation Range (RDO)0.0 to 500.0 % saturation
Percent Saturation Relative Accuracy (Polarographic DO)±2 % saturation or ±2% of reading whichever is greater
Percent Saturation Resolution (RDO)0.1, 1 % saturation
Power Supply4 AA batteries (included) or universal AC adapter (sold separately)
Pressure Resolution1mmHg
Probe TypeRDO optical dissolved oxygen probe, polarographic dissolved oxygen probe (purchase separately)
Channels1
Resolution (RDO)0.01, 0.1mg/L
Salinity Factor0.0 to 45.0 ppt, automatic correction using manual entry of sample salinity
StabilitySmart Stability and Smart Averaging
Temperature (English) Operating41°F to 113°F (ambient)
Temperature (Metric) Operating5°C to 45°C (ambient)
Battery Life800 hours
Battery TypeFour AA (included)
Accuracy (Barometer)±6mmHg
Unit SizeEach