Dissolved Oxygen: Emerson Introduces RDO Optical Dissolved Oxygen Sensor And Analyzer
Emerson Process Management recently introduced the Rosemount Analytical RDO optical dissolved oxygen sensor and analyzer for use in wastewater aeration basins and ponds. The sensor is more resistant to fouling than polarographic sensors, an important advantage in wastewater where coating is a common problem. Less sensitivity to fouling means less need for cleaning and reduced operating costs.
The sensor is available with either integral or quick-disconnect cable. A 1-¼ in FPT fitting at the rear of the sensor allows a threaded pipe to be screwed into the sensor so it can be submerged in the basin. One advantage of the sensor's design is it does not need a flowing sample, so it works well in a low flow basin or pond.
Maintenance is fast and easy and consists primarily of replacing the sensing cap once a year. The analyzer accepts one or two sensors. It has a two-line display, which can be customized to show mg/L (ppm) oxygen, percent saturation, oxygen partial pressure, or temperature for either sensor. The display can also be configured to show the current barometric pressure. The analyzer has two loop-powered 4-20 mA analog outputs assignable to either sensor and to any measurement (concentration, temperature, or partial pressure). Modbus/ RS485 communication is also available as a standard feature. Calibration is simple and can be done either against a referee instrument or in water-saturated air. Air calibration is completely automatic.
"The addition of the optical dissolved oxygen analyzer and sensor to our product line is significant and enables Emerson to continue to be the single-source provider of the most advanced and easy-to-use analysis technologies for wastewater applications," said John Wright, vice president, Emerson Process Management, Rosemount Analytical. "Our focus has always been to meet real-world customer demands for accuracy, advanced technology, ease of use, lowered cost of ownership and reduced maintenance requirements. The optical sensor fulfills that commitment."
For more information, visit http://www2.emersonprocess.com/en-US/brands/rosemountanalytical/Liquid/Systems/RDO/Pages/index.aspx
About Emerson Process Management
Emerson Process Management an Emerson business, is a leader in helping businesses automate their production, processing and distribution in the chemical, oil and gas, refining, pulp and paper, power, water and wastewater treatment, mining and metals, food and beverage, life sciences and other industries. The company combines superior products and technology with industry-specific engineering, consulting, project management and maintenance services. Its brands include PlantWeb, Syncade, DeltaV, Fisher, Micro Motion, Rosemount, Daniel, Ovation, and AMS Suite. For more information, visit www.emersonprocess.com
Emerson based in St. Louis, Missouri (USA), is a global leader in bringing technology and engineering together to provide innovative solutions for customers in industrial, commercial, and consumer markets through its network power, process management, industrial automation, climate technologies, and appliance and tools businesses. Sales in fiscal 2009 were $20.9B. For more information, visit www.Emerson.com.