New liquid analyzers such as the Rosemount Analytical Model 56, part of an advanced Free Chlorine Monitoring system, allow drinking water plants to take advantage of wireless technology.
In addition, the systems’ advanced data logging technology collects and stores process information. The combination of advanced diagnostics and historical data provide early warning before a problem develops, supporting increased up-time and reduced maintenance.
Security is always a critical concern for potable water plants, and the new wireless technologies are built on the multilayered security features available in the WirelessHART standard. These include encryption with automatic key rotation, device authentication and data verification. External interference is mitigated by spread-spectrum broadcast and automatic channel selection that avoids the noisy radio interferences. Consequently, wireless networks offer security and reliability comparable to hard-wired solutions.
About the Author: Richard Baril, product manager, Emerson Process Management, Rosemount Analytical, Liquid Division has been active in the drinking water, wastewater and process industries for more than 20 years. Further information can be found at www.rosemountanalytical.com.
EMERSON PROCESS MANAGEMENT® is an exhibitor at the ACE® ‘11 event and can be found at Booth No. 1608
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