<1. Overview>
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TI 11M12A01-01EAll Right Reserved Copyright © 2004, Yokogawa Electric Corporation
Mar. 14, 2017-00
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
petrochemical, ceramics, pulp and paper, food, or textiles, as well as incinerators and medium/
small boilers. It can help conserve energy in these industries. The ZR402G also contributes
to preservation of the earth’s environment in preventing global warming and air pollution by
controlling complete combustion to reduce CO
2
SOx and NOx.
The ZR22G Detector uses a high-reliability Zirconia sensor, and its heater assembly can be
replacedonsite.Thedetectorismounted,forexample,onthewallofaueandcanmeasurethe
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 adapter.
The ZR402G 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 ZR402G 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 automated— 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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