Ametek CEM/Humox, Руководство пользователя

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Overview
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OVERVIEW
The CEM/Humox - Moisture in Flue Gas Analyzer is designed to measure net oxygen
and moisture content in flue gas and process applications. The O
2
and moisture data
is used to improve efficiency, identify water or tube leaks, correct emissions, assure
product quality, or minimize stack corrosion. The instrument indicates moisture
and O
2
concentrations in percent by volume.
The process gas is applied directly to the wet CEM O
2
sensor. Gas for the dry CEM
O
2
sensor cell is first passed through the customer’s moisture removal sampling con -
ditioning system, which drops out most of the moisture (except for that which may
be present at the cooler temperature – which is assumed to be saturated). The dead
space volume in the customer’s wet and dry sample flow paths should be matched
(i.e. vortex cooler, permeation dryer, refrigeration chiller, etc.) to ensure that both
the wet and dry readings are measured by the two different zirconium oxide cells
at the same time to ensure consistency and accuracy.
Both zirconium oxide cells are standard WDG-type cells, and the same zirconium
oxide measuring principles are used as with standard WDG-type sensors.
Follow these cautions when working on the sensor:

Remove AC power from the sensor and control unit and allow the sen -
sor to cool for at least one hour before performing any maintenance or
troubleshooting activities.

The outside of the sensor cover and all sensor assembly components
are hot during normal operation. Allow sensor components to cool for
at least an hour before working inside the sensor. Use caution and wear
appropriate gloves when handling components or when touching the
sensor cover!