Rosemount Analytical 6888 and Oxymitter Combustion Flue Gas Analyzer

Quick Detail:

· Manufactured by Rosemount Analytical

· ±0.75% of reading or ±0.05% O2 accuracy

· Digital HART communications

· Net O2 range: variable 0-10% to 0-50%

· Adaptable to any existing O2 probe installation

· Advanced sensor diagnostics

· Fully field repairable

· Large backlit LCD display

· Advanced software features

Description:

The Rosemount Analytical 6888 Oxygen Transmitter provides accurate measurement of the oxygen remaining in the flue gases coming from any combustion process. Optimal combustion efficiency can be obtained by maintaining the ideal level of oxygen in the flue gases coming from these processes and the lowest level of NOX, CO and CO2 are produced.

Easy to use and easy to integrate. This in situ analyzer was designed with customer ease-of-use in mind. There are no moving parts or sampling apparatus resulting in an extremely reliable probe that requires very little maintenance.

The 6888 in situ O2 analyzer provides accurate measurement of the oxygen remaining in the flue gases coming from any combustion process, including:

· Boilers

· Incinerators

· Industrial heating furnaces

· Kilns

· Process heaters

This in situ design places a zirconium oxide sensing element at the end of a probe, which inserts directly into a flue gas stream. There are no moving parts or sampling apparatus, resulting in an extremely reliable analyzer that requires very little maintenance. Probe lengths are available from 18" to 12', and a slip mounting option provides the ability to mount a long probe at any insertion depth. Heavy-wall probe tubes are available for applications where fly-ash erosion is a problem. Accessories are available for process temperatures above 700°C to 1050°C.

Calibrations may be performed on-line, while the furnace is in operation, and fully automated calibration with solenoid switching is also available.

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.

Signal conditioning electronics reside in the head of each probe, eliminating the need for expensive signal cable. A dual-channel operator interface unit provides an easy-to-use method of setting up the instrument, calibrating, and diagnosing failures.

Applications:

Rosemount Analytical's combustion flue gas analyzers measure the gases flowing out of large industrial boilers and furnaces to improve combustion efficiency.

The Rosemount Analytical line of In Situ Flue Gas Analyzers measure the oxygen remaining in the flue gases resulting from any combustion process (boiler or furnace). The output form thei analyzer is typically used for controlling the fuel/air ratio of the gases going into the furnace burner, which optimized furnace efficiency, and also generated a minimum amount of NOx and CO2 .

Specifications:

Measurement Specifications

Net O2 range:
variable 0-10% to 0-50%
(Xi electronics offer 0-50% O2 range)

Accuracy in oxidizing conditions:
±0.75% of reading or 0.05% O2, whichever is greater

Lowest detectable limit:
0.02% O2

Process temperature effect:
less than 0.05% O2 from 100-700°C

System speed of response to calibration gas:
Initial response in less than 3 seconds, T90 in less than 8 seconds. Response to process gas changes will vary, depending on process gas velocity and particulate loading of the diffuser

Calibration validity:
Presentation of calibration gases matches the bottle
value to within ±0.02% O2

Accuracy in reducing conditions (stoichiometer feature, only):
±0.1% of reading, or 0.1% O2, whichever is greater

System response in reducing conditions (stoichiometer feature, only):
going from oxidizing to reducing -T90 in 120 sec.
going from reducing to oxidizing -T90 in 30 sec.

Environmental Specifications

Transmitter probe:
Process-wetted materials are 316L or 304 stainless steel

Process temperature limits:
0 to 705°C (32-1300°F)
550-825C with Xi “heaterless operation” feature*
Reduced cell life can be expected if operated continuously at temperatures above 705°C (1300°F). Optional bypass and jacket accessories permit operation to 1050°C (1922°F)

Probe electronics ambient temperature limits:
-40° to 70°C (-40° to 158°F)

Temperature limit as measured inside probe electronics:
-40° to 85°C (-40° to 185°F)

Competitive Advantage:

RELIABLE ANALYZER with no moving parts and sensing sells with a 5+ year life.

CONVENIENT ONLINE CALIBRATION in an operating furnace vie gas-switching solenoids mounted inside the probe head.

INTEGRAL ELECTRONICS

GENERAL PURPOSE & HAZARDOUS AREAS APPROVED allow for broad applications.