The new standard for combustion flue gas analysis0 pages

6888
IN SITU FLUE GAS OXYGEN TRANSMITTER

The new standard for combustion flue gas analysis
The 6888 in situ O2 transmitter provides accurate measurement
of the oxygen remaining in the flue gases coming from any
combustion process, including:
> Boilers

> Kilns

> Incinerators

> Process Heaters

> Industrial Heating Furnances

By maintaining the ideal level of oxygen, the flue gases coming
from these processes, optimal efficiency is gained, and the lowest level of NOX, CO, and CO2 are produced.

EASY TO USE. EASY TO INTEGRATE.
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. Heavywall 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.

VARIABLE INSERTION OPTION

Power

Calibrations may be performed online, 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.
An optional dual-channel operator
interface unit provides an easy-to-use
method of setting up the instrument,
calibrating, and diagnosing failures.

Refining

ON-BOARD ELECTRONICS
On-board electronics provides
heater control and
signal conditioning, resulting in a
linear 4-20 mA signal representing flue gas oxygen.
Electronics temperature specification
is 85°C (185°F). No special signal
cable is required. HART® 475 communicator or AMS can be used for
setup, calibration, and diagnostics.

Lengths from 18" (.9m) to 12'
(3.65m) the new variable insertion
option permits ideal placement of the
probe into the flue gas duct. Probe
can be adjusted at any time on-line to
characterize stratification across
large ducts.