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In-Situ RDO Sensors

In-Situ RDO Rugged Dissolved Oxygen Sensors offer significant improvement over Clark cell and existing optical dissolved oxygen sensors. These patented world-beating RDO sensors have numerous field applications (see below) and are available on two of In-Situ's leading products: - RDO PRO - a single parameter probe for process control applications. - TROLL 9500 - a versatile multiparameter sonde for water quality monitoring in the field. Rugged performance Wiper-free sensor excels in demanding environments. Abrasion-resistant foil withstands fouling, high sediment loads, and rapid flow rates. - No hydration effects - No conditioning required - Not subject to thermal shocking - Few interferences Superior Precision and Accuracy - Holds a calibration - Excels in hypoxic conditions - Fast, stable response - ideal for vertical profiling and rapidly changing DO conditions - Operates with low drift over long-term deployments - Deploys for several months without calibration Automatic setup RDO Cap with pre-loaded calibration coefficients simplifies setup and eliminates programming errors. Minimal interferences Sensor eliminates "poisoning"” by sulfides, sulphates, and hydrogen sulfide. No cross-sensitivity to carbon dioxide, ammonia, pH, or chloride. Lower Total Costs - No membranes to calibrate - Fewer site visits - Minimal sensor drift EPA Recommends Approval of In-Situ® RDO® Optical DO Methods The U.S. EPA has granted nationwide approval to three In-Situ RDO optical dissolved oxygen (DO) methods under the Alternate Test Procedure (ATP) process. These methods can be used in the measurement of Biochemical Oxygen Demand (BOD), Carbonaceous Biochemical Oxygen Demand (CBOD), and Dissolved Oxygen (DO) under the US Clean Water Act. For more information please read: In-Situ RDO Technology Outperforms Traditional Methods - EPA Recommends Approval In-Situ RDO Technology Overview A summary of the results submitted to the EPA are available in a white paper prepared by Edward Askew PhD: In-Situ RDO Methods for Analysis of BOD, CBOD, and DO
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RDO PRO - Rugged Dissolved Oxygen Probe

The In-Situ RDO PRO Optical Dissolved Oxygen Probe uses the latest technology to measure DO in demanding process environments. The RDO PRO Probe offers many advantages for monitoring DO in process applications.