A180/181 Professional Dissolved Oxygen Meter

Measurement Parameters

  • A180 meter: Dissolved Oxygen, BOD Oxygen Uptake Rate, Specific Oxygen Uptake Rate.
  • A181 meter : Dissolved Oxygen


  • 1 or 2 points push-button calibration using the air-saturated water or zero oxygen solution.
  • Salinity and barometric pressure compensations ensure the accurate DO measurements.
  • Selectable testing time, beginning/ ending DO are used for the OUR and SOUR calculations.
  • Limit alarm alerts when reading exceeds range.
  • Calibration Due Reminder prompts use to calibrate the meter regularly
  • Stability indicator shows when a measurement is recognized as stable
  • Auto-Read feature senses and locks the measurement endpoint
  • Interval Readings automatically send the measured data to the computer or printer
  • Password protection prevents the unauthorized calibration and settings
  • Expanded memory stores and recalls up to 1000 data sets
  • Stored readings can be transferred into the computer by USB communication interface
  • Reset feature automatically resumes all settings back to factory default options.

Meter Includes

Dissolved oxygen probe, membrane cap, electrolyte solution, electrode holder, power adapter.


DO/OUR/SOURMeasuring Range0.00~20.00mg/L, 0.0~200.0% Saturation**
Accuracy±1% F.S**
Calibration Points1~2 points**
Temperature Compensation0~50 C, 32~122 F, Automatic**
Barometric Pressure Correction450~850mmHg, 60.0~113.3kPa, Manual**
Salinity Correction0~50g/L, Manual**
BOD/OUR/SOUR MeasurementsOnly for A180 meter*
Stability CriteriaStandard or High-accuracy**
Interval Readings10, 30, 60 seconds, 10, 30 minutes or Off**
MemoryStores up to 1000 data sets**
OutputUSB communication interface**
Display7 inch TFT LCD**
Power RequirementsDC12V / 2A power adapter**
Dimensions and Weight240(L)×220(W)×80(H)mm, 1.7kg**



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