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Flue Gas Analyzer Working Principle UV-GAS-500 Emission Monitoring Measure 5 Gases UV NDIR Technology
The working principle of a flue gas analyzer involves the measurement and analysis of gases emitted from combustion processes. Here is a general overview of the working principle of a flue gas analyzer:
1. Gas Sampling: The flue gas analyzer utilizes a sampling probe
that is inserted into the flue or stack where the combustion gases
are emitted. The probe is positioned in a way that it captures a
representative sample of the flue gas.
2. Gas Extraction: The flue gas is extracted from the flue or stack
through the sampling probe. Some analyzers employ a built-in pump
to draw the gas sample into the analyzer, while others rely on the
natural draft of the flue gas.
3. Gas Conditioning: The extracted flue gas may contain
particulates, moisture, or other impurities that could interfere
with accurate measurements. Therefore, the gas conditioning system
of the analyzer may include filters, condensation traps, or other
mechanisms to remove these impurities and ensure a clean gas sample
for analysis.
4. Gas Analysis: Once the flue gas is properly conditioned, it is
directed to the sensors within the analyzer for analysis. Different
sensors are used to measure specific gas parameters such as oxygen
(O2), carbon dioxide (CO2), carbon monoxide (CO), nitrogen oxides
(NOx), sulfur dioxide (SO2), and possibly other components
depending on the analyzer's capabilities.
5. Sensor Technologies: Flue gas analyzers employ various sensor
technologies to measure gas concentrations. For example, an
electrochemical sensor may be used to measure oxygen and carbon
monoxide levels, while an infrared sensor can be utilized for
carbon dioxide measurement. Other sensing technologies such as
chemiluminescence, ultraviolet (UV), or non-dispersive infrared
(NDIR) may be employed for measuring nitrogen oxides and sulfur
dioxide.
6. Signal Processing and Display: The measured gas concentrations
from the sensors are processed by the analyzer's electronics, which
convert the sensor signals into readable values. The results are
then displayed on the analyzer's screen, indicating the
concentrations of different gases in the flue gas sample.
7. Data Logging and Analysis: Many flue gas analyzers are equipped
with data logging capabilities, allowing the user to store and
analyze measurement data over time. This feature enables trend
analysis, comparison of multiple measurements, and generation of
comprehensive reports for performance evaluation, emissions
monitoring, and compliance purposes.
8. Calibration and Maintenance: To maintain accuracy, flue gas
analyzers require periodic calibration using reference gases of
known concentrations. Calibration procedures may involve adjusting
the analyzer's sensors or other calibration mechanisms. Regular
maintenance, such as sensor cleaning and replacement of
consumables, is also necessary to ensure reliable performance.
It's important to note that the specific working principle and
internal mechanisms can vary among different flue gas analyzer
models and manufacturers. The above description provides a general
understanding of the common principles involved in flue gas
analysis. For accurate operation and maintenance, it's recommended
to refer to the user manual and guidelines provided by the
manufacturer of the specific flue gas analyzer being used.
Introduction
Flue Gas Analyzers UV-GAS-500 (low emission monitoring) based on DOAS and chemometric algorithms (PLS) , able to measure concentration of gases including SO2 , NO2, NO, O2 , NH3, Cl2, O3, H2S etc. It has features of high measure accuracy, outstanding reliability, fast response time and wide applicable scope. It fully qualify measurement technology index of low emission monitoring occasions.