All Rights Reserved. Copyright © 2003, Yokogawa Electric Corporation TI 11M12A01-01E
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<Toc> <Ind> 1. Overview
May 31,2004-00
1. Overview
The EXAxt Zircon Oxygen Analyzer (Model ZR402G) is used to monitor and control the oxygen
concentration in combustion gases, in boilers and industrial furnaces, for wide application in
industries which consume considerable energy—such as steel, electric power, oil and petro-
chemical, ceramics, paper and pulp, food, or textiles, as well as incinerators and medium/small
boilers. It can help conserve energy in these industries. The ZR402G also contributes to preserva-
tion of the earth’s environment in preventing global warming and air pollution by controlling
complete combustion to reduce CO
2
, SOx and NOx.
ZR22G Detector uses a high-reliability Zirconia sensor, and its heater assembly can be replaced
on site. The detector is mounted, for example, on the wall of a flue and can measure the gases
directly.
For use in combustion gases at temperatures up to 1400°C, choose the general-use 0.15m long
detector, which is combined with ZO21P-H, the high-temperature probe protector. The converter
is equipped with an LCD touch screen which has various setting displays, a calibration display,
oxygen concentration trend display, with easier operation and improvement of display functions.
The converter is equipped with various standard functions such as measurement and calculation
as well as maintenance functions including self-test. Analyzer calibration can also be fully auto-
mated— and ZR40H, an automatic calibration unit, is available. Choose the detector version
which best suits your needs so that an optimal combustion control system can be obtained.
Use this TI as a system selection guide and application note.
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