Geneq > Environment > Dissolved Oxygen and RDO (Rugged Dissolved Oxygen) Meters
pH/RDO/Conductivity Portable Meter
Model 5-Star


Full-featured Portable Multi-parameter System with RDO (Rugged Dissolved Oxygen) Technology
  • Simultaneous display of pH, dissolved oxygen, conductivity and temperature on the backlit LCD
  • Uses optical DO technology
  • No membranes to change – once-a-year cap replacement
  • Calibrate for dissolved oxygen using water-saturated air, air-saturated water, zero point or a custom point with Winkler titration
  • Built-in barometer for automatic pressure correction for dissolved oxygen readings with option for manual correction
  • pH calibration of up to 5 points with calibration alarm and automatic buffer recognition of USA, NIST and DIN buffers
  • Temperature calibration capability
  • Conductivity / TDS / salinity / resistivity calibration of up to 5 points and reading reference temperatures of 5?C, 10?C, 15?C, 20?C or 25?C
  • Automatic salinity correction for dissolved oxygen measurements from the conductivity probe reading
  • Data storage for 500 data sets with time and date stamping
  • RS232 port for easy data downloading and software updates
  • IP67-rated meter housing and IP68-rated RDO sensor
  • Four AA batteries provide over 1000 hours of operation in AUTO-READ™ mode
  • 3-year warranty on meter and RDO sensor body
  • 1-year warranty on optical cap

Specifications

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
pH
Range
-2.000 to 19.999
Resolution
0.1, 0.01, 0.001
Relative Accuracy
± 0.002
mV, RmV, ORP
Range
± 1999.9 mV
Resolution
0.1 mV
Relative Accuracy
± 0.2 mV or 0.05% of reading, whichever is greater
Conductivity
Range
0.000 to 3000 mS/cm, auto resolution, cell constant dependent
Resolution
4 significant digits down to 0.001 μS/cm, cell constant dependent
Relative Accuracy
0.5 % ± 1 digit or 0.01 μS/cm, whichever is greater
Cell Constants
0.001 to 199.9 cm–1
Resistivity
Range
0.0001 to 100 Megohm
Resolution
Automatic
Relative Accuracy
0.5 % ± 1 digit
Salinity
Range
0.1 to 80 ppt NaCl equivalent, 0.1 to 42 ppt practical salinity
Resolution
0.1 ppt
Relative Accuracy
± 0.1 ± 1 digit
TDS
Range
0 to 19999 mg/L
Resolution
1 mg/L
Relative Accuracy
± 0.5% ± 1 digit
Temperature (with RDO sensor)
Range
0 to 50 °C
Resolution
0.1 °C
Relative Accuracy
± 0.3 °C
Temperature (when RDO sensor is not used)
Range
-5 to 105 °C
Resolution
0.1 up to 99.9 °C, 1.0 over 99.9 °C
Relative Accuracy
±0.1 °C