Ametek Thermox Series 2000 WDG-IV, Руководство пользователя

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Overview
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1-5
Sensor Operations - WDG-IVCM
Close-Coupled Extrative Flue Gas Analyzer
The WDG-IVCM analyzer is ideal for natural gas-fired power boilers or
for those using gas during start-up and shutdown. With this analyzer, you
can monitor oxygen and combustibles for maximum fuel efficiency. In
addition, the methane detector can be used for purge and lightoff cycles
during start-up and shutdown.
Hot-Wire Type
WDG-IVCM analyzers with hot-wire type combustibles detector (see
Figure 1-2) are used for processes that use natural gas for start-up and oil,
fuel gas or coal for primary fuel. Process gas is drawn into the analyzer’s
primary sample loop by an aspirator and returns to process. Gas enters
the split flow block that is separted by a baffle and contacts the hot-wire
catalytic combustibles and methane detector. It then passes the zirconium
oxide cell, where the oxygen concentration is measured, before returning
to the main sample loop and then back to the process.
CELL HOUSING
ZIRCONIUM OXIDE
OXYGEN CELL
CONVECTION LOOP
RETURN
METHANE DETECTOR
SAMPLE
ASPIRATOR AIR
ASPIRATOR BLOCK
RETURN TO
PROCESS
PPM OR PERCENT
COMBUSTIBLES DETECTOR
Figure 1-2. WDG-IVCM with hot-wire type combustibles detector convection loop.