Oxygen Analyzer features intrinsically safe design.

Press Release Summary:




In Situ Analyzer, Model 5081 FG utilizes zirconium oxide sensor cell constructed of ceramic materials to measure excess oxygen in process temperatures ranging from 1,022-2,550°F. HART® protocol delivers device status and diagnostic data via handheld infrared remote control to technicians servicing and calibrating systems. Mounted close to furnace or radiant section of process flue gas system, unit provides accuracy of ±1.5% of reading.



Original Press Release:



Emerson Process Management Introduces Model 5081FG in Situ Oxygen Analyzer Designed for High-Temperature Furnaces to 1400° C (2550°F)



Analyzer features HART® protocol for remote diagnosis, calibration in high-temperature environments

ORRVILLE, OHIO (June 14, 2004) - Operators of furnaces, incinerators and process heaters can now take advantage of an analyzer that can operate at elevated temperatures much closer to the burner than has ever been possible before. Emerson Process Management's new Rosemount Analytical Model 5081 FG in situ oxygen analyzer also features an intrinsically safe design, as well as HART® protocol, which delivers reliable measurements, device status and diagnostic data remotely to technicians servicing and calibrating systems.

Remote diagnosis is essential with the Model 5081 FG analyzer as it is designed for mounting close to the furnace or radiant section of the process flue gas system. Closer proximity to the combustion process provides a more representative oxygen measurement compared to traditional in situ analyzers that are typically mounted further from the process due to limited temperature tolerances. This enhanced measurement - providing accuracy readings ±1.5 percent of reading - often results in significant fuel savings or improved process throughput.

The Model 5081 FG analyzer utilizes a zirconium oxide sensor cell constructed of ceramic materials to accurately measure excess oxygen in process temperatures ranging from 550° to 1400° C (1022° to 2550° F). In fact, the analyzer's intrinsically safe design uses the higher process temperatures to heat the sensor cell to the appropriate operating temperature without the use of a cell heater commonly found in traditional in situ analyzers.

Those traditional cell heaters are powered via the analyzer's electronics and could potentially serve as an ignition source to any hazardous gases inside the process system or in the ambient gases in the area where the analyzer's electronics are installed. As a result, users of systems requiring cell heaters must sometimes purchase analyzers with costly protection features such as flame arrestors, field-mounted electrical barriers or special enclosures.

The HART protocol featured in the Model 5081 FG analyzer allows for communication with the system via an easy-to-use handheld Infrared Remote Control (IRC). Only one IRC is required to
communicate with any number of Model 5081 FG analyzers at the user's location as individual factory or user identification numbers are associated with each analyzer. The HART protocol
provides a link into Emerson Process Management's PlantWeb® field-based architecture for superior control performance, optimization of plant assets, increased plant availability and
reduced maintenance costs.

Applications for the 5081 FG in situ oxygen analyzer include:
o Process heaters - hazardous areas
o Reactor furnaces - hazardous areas
o Boiler radiant zones (measures before air leaks, tuning individual burners and NOx reduction)
o Sulfur recovery furnaces
o Hazardous waste incinerators
o Steel reheat furnaces

About Emerson Process Management
Emerson Process Management (www.emersonprocess.com), 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, food and beverage, pharmaceutical and other industries. A division of Emerson, Rosemount Analytical (emersonprocess.com/proanalytic) includes a gas division in Orrville, Ohio, that is a leading supplier of on-line gas analyzers and systems for process, environmental and laboratory analysis applications. The best-in-class technology and expertise of Rosemount Analytical play
a key role in Emerson's combining of superior products and technology with industry-specific engineering, consulting, project management and maintenance services. Emerson brands
include: PlantWeb®; Fisher®; Rosemount®; Intellution®; Micro Motion®; Westinghouse Process Control; DeltaV(TM); and AMS(TM) Suite.

About Emerson
St. Louis-based Emerson (www.gotoemerson.com) is a global leader in bringing technology and engineering together to provide innovative solutions to customers in process control; electronics and telecommunications; industrial automation; heating, ventilating and air conditioning; and appliance and tools. Sales in fiscal 2003 were $14.0 billion.

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