Emerson Process Management enhanced the Rosemount Analytical 6888 In Situ Flue Gas O2 Analyzer with new diagnostics that help maintain optimum oxygen levels in flue gases. The improvements help decrease maintenance requirements and improve measurement accuracy, according to Emerson.
The 6888 incorporates a "calibration recommended" diagnostic with gas-switching solenoids embedded within the probe electronics. The embedded diagnostic reduces the cost of providing and installing a separate solenoid box and reduces the effort to wire and pipe between the probe and electronics. The calibration recommended diagnostic removes the need to conduct calibrations on a schedule, eliminating many validations (calibrations checks) or actual calibrations. The analyzer also includes a "plugged diffuser/filter" diagnostic for applications that have fly ash or other particulate entrained in the flue gases.
A variable insertion option permits placement of the probe into the flue gas duct. With standard length probes from 18" (.5m) to 12' (3.65m) in horizontal or vertical installation, the probe can be adjusted at any time online to characterize stratification across large ducts.
The 6888 is fully field-repairable. All active components can be replaced, including the diffuser/filter, sensing cell, heater and thermocouple, and all electronics cards. The 6888 offers HART and FOUNDATION fieldbus digital communications, and can also be configured with the optional Smart Wireless THUM adapter for wireless operation.