Orion 4-Star Plus Portable Optical DO Meter

The sensor is not affected by colour or turbidity so is ideal for use in effluent, aeration basins and even influent.

The 3 star meter has dissolved oxygen and temperature measurement capabilities. It has the ability to store up to 1000 data sets with date and time stamping. The RDO meter uses optical / luminescence technology to provide to provide the dissolved oxygen measurements.

The unit can be calibrated for dissolved oxygen using air saturated water, water saturated air, zero point or at a custom point with Winkler titration. It also has the ability for temperature calibration.

A built in barometer allows automatic pressure correction. A calibration sleeve and stainless steel probe guard are included with the RDO probe.

Additional features:

  • IP67 rated
  • RS232 port for software updates and downloading data
  • 1000 hours operation provided by four AA batteries
Orion 3 Star RDO Meter Specifications
Dissolved Oxygen (DO)
Concentration Range 0.00 to 20.0 mg/L
Resolution 0.01, 0.1 mg/L
Relative Accuracy ?0.1 mg/L up to
8 mg/L; ?0.2 mg/L
from 8 to 20 mg/L
% Saturation Range 0.0 to 200%
Resolution 0.1, 1%
Relative Accuracy ? 2%
Barometric Pressure Correction 450 to 850 mm Hg,
automatic or manual
Calibration Features Water saturated air,
air saturated water,
manual (Winkler) and
zero point
Sensor Type RDO optical
Temperature:
Range 0 to 50 ?C
Resolution 0.1 ?C
Relative Accuracy ? 0.3 ?C
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