Home Paramters Dissolved Oxygen DO850 Portable Dissolved Oxygen Meter Kit

DO850 Portable Dissolved Oxygen Meter Kit



The APERA Instruments DO850 Dissolved Oxygen Meter is equipped with ultramodern optical sensor for dissolved oxygen measurements. Equipped with state-of-the-artOptical DO sensor: measures dissolved oxygen level in a reliable and effortless manner

Minimal maintenance required. Easy calibration.

State of the art Luminescent Optical DO Sensor

  • No Membrane, No Solution, No Hassle.
  • Quick & Accurate Measurements
  • The probe does not consume oxygen. No limit on water flowing speed.
  • Maintenance-free. No need to calibrate before every use.
  • The service life of the luminescent cap is over 8000 hours. No need to replace the cap every year.
  • The special coating on the luminescent cap makes it anti-interference and unaffected by light and chemicals.
  • A calibration cap comes with the probe, which allows it to be calibrated and stored in saturated air.

Intelligent Instrumentation

  • Auto Temperature Compensation; Auto Air Pressure (barometric) Compensation; Manual Salinity Compensation
  • Large backlit LCD screen, simultaneously displaying dissolved oxygen reading and temperature. Easy switch from mg/L and % to ppm and %.
  • Advanced digital processing technology, supporting stable reading and auto-lock display modes.
  • IP67 Waterproof dust-proof rating allows the meter to be used in harsh environments.
  • Foldable stand allows use as a benchtop meter.
  • Comes with a rugged carrying case, which includes a meter, an optical DO probe, and the accessories.

3-Year warranty with the instrument, 2-year with the probe.



Dissolved Oxygen Measuring Range 0 to 200 %; 0-20.0 mg/l
Resolution 0.1/1 %, 0.01/0.1 mg/l (ppm)
Accuracy ±2 % of reading or ±2 % of saturation;

±2 % of reading or ±0.2 mg/l (ppm), whichever is greater

Response time 90 % in ≤30 s (25 ℃ )
Calibration points Saturated oxygen & zero oxygen
Temperature compensation 0 to 50 ℃ (automatic)
Air pressure compensation 60 to 120 kPa (automatic)
Salinity compensation 0-45 ppt (manual)
Temperature Measuring Range 0 to 50 °C
Resolution 0.1 °C
Accuracy ±0.5 °C
Others Power Supply 3 x AA Batteries
IP Rating IP57
Dimensions 88×170×33 mm (with case 360×270×76 mm)
Weight 313 g (with case 1.3kg)
Certification RoHs, CE



Complete test kit:

  • DO850 Portable Optical Dissolved Oxygen Meter
  • DO803 Optical Dissolved Oxygen Probe
  • Probe Calibration Sleeve
  • Small Screwdriver
  • Carrying Case
  • Sponge for Water Storage (spare)
  • Instruction Manual



DO850 (pdf, 1,426 Kb) [Download]



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