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Chapter 8
Customer Services
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86
Orion Star A220 Series Portable Meter User Manual
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Orion Star A223 RDO/DO Portable Meter Specifications
Measurement Channels
Polarographic
Range
Resolution
Relative Accuracy
Dissolved
RDO Optical
Oxygen
Range
Resolution
Relative Accuracy
Barometric Pressure Correction
Salinity Correction Factor
Calibration Types
Compatible Sensors
Range
Resolution
Temperature
Relative Accuracy
Offset Calibration
Source Options
Sensor Input 9 pin MiniDIN
Note: All specifications are subject to change without notice.
1 – dissolved oxygen as % saturation or mg/L with temperature
Concentration
0 to 90 mg/L
0.01 / 0.1 mg/L
±0.2 mg/L or ±2% of reading,
whichever is greater
Concentration
0 to 50 mg/L
0.01 / 0.1 mg/L
±0.1 mg/L up to 8 mg/L,
±0.2 mg/L 8 to 20 mg/L,
±10% of reading up to 50 mg/L
400 to 850 mmHg, automatic using built-in barometer (±6 mmHg)
or manual entry
0.0 to 45.0 ppt, automatic using manual entry of sample salinity
Water-saturated air, air-saturated water, manual (Winkler), zero
point
Polarographic, RDO optical
0 to 50 °C, 32 to 122 °F
0.1 °C, 0.1 °F
±0.1 °C
1 point
Automatic with built-in temperature sensor
Dissolved oxygen sensor with built-in temperature
% Saturation
0 to 600 %
0.1 / 1 %
±2% saturation or ±2% of
reading, whichever is greater
% Saturation
0 to 500 %
0.1 / 1 %
±2 % saturation ≤ 200 %
saturation, ±10 % saturation
> 200 % saturation
Thermo Scientific
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