• Improved stability algorithm to increase calibration and measurement accuracy
• Average slope and slope of segment printed with measurement
• Ability for ATC temperature calibration
• Increased data log points: 1000
• Ability to turn off data log
• Ability to print or view last 10 calibrations
• New Individual method passwords
• Now with ability to operate an auto-sampler!
• Ability to turn off BOD stirrer
• Solution and membrane temperature printed with measurement
• Solution and membrane temperature displayed
• Ability to calibrate both solution and membrane temperature

• Improved stability algorithm to increase calibration and measurement accuracy
• Average slope and slope of segment printed with measurement
• Ability for ATC temperature calibration
• Increased data log points: 1000
• Ability to turn off data log
• Ability to print or view last 10 calibrations
• New Individual method passwords
• Ability to turn off BOD stirrer
• Solution and membrane temperature printed with measurement
• Solution and membrane temperature displayed

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 and temperature measurement capabilities
Data storage for 1000 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

• Improved stability algorithm to increase calibration and measurement accuracy
• Average slope and slope of segment printed with measurement
• Ability for ATC temperature calibration
• Increased data log points: 750
• Ability to turn off data log
• Ability to print or view last 10 calibrations
• New Individual method passwords
• Now with ability to operate an auto-sampler
• Ability to turn off BOD stirrer
• Solution and membrane temperature printed with measurement
• Solution and membrane temperature displayed
• Ability to calibrate both solution and membrane temperature
• DO slope now on printout

• Improved stability algorithm to increase calibration and measurement accuracy
• Average slope and slope of segment printed with measurement
• Ability for ATC temperature calibration
• Increased data log points: 750
• Ability to turn off data log
• Ability to print or view last 10 calibrations
• New Individual method passwords
• Ability to turn off BOD stirrer
• Solution and membrane temperature printed with measurement
• Solution and membrane temperature displayed
• Ability to calibrate both solution and membrane temperature
• DO slope now on printout

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.

• 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, 10ºC,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