Thermo Scientific Orion Star meters with RDO require no membranes. Maintenance is just a simple cap replacement. This easy-to-use feature is great for measurements from effluent, aeration basins and even influent, as the sensor is not affected by color or turbidity.
Product Detail
Dissolved oxygen, pH, conductivity, salinity, TDS, resistivity and temperature measurement capabilities
Conductivity/TDS/salinity/resistivity calibration of up to 5 points and reading reference temperatures of 5 ºC, 10 ºC,15 ºC, 20ºCc 25ºC
Automatic salinity correction for dissolved oxygen measurements from the conductivity probe reading
Temperature calibration capability for pH and conductivity
Data storage for 500 data sets with time and date stamping
All RDO Meters feature:
Dissolved oxygen level measurements using 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 at a custom point with Winkler titration
Built-in barometer for automatic pressure correcting with option for manual correction for dissolved oxygen readings
RS232 port for easy data downloading and software updates
Simultaneous display of measured values on the backlit display
IP67-rated housing
Four AA batteries to provide over 1000 hours of operation in Auto-Read™ mode
1 Items Total 995.00 USD 
