AIR POLLUTION
MONITORING
& SAMPLING NEWSLETTER
January 2010
No. 363
How Do the Suppliers Classify Their Products?
The above examples illustrate how the foster lineages are constructed from genetic lineages. Now let’s look at some of the genetic classification challenges.
Source: Gas Analyzers
Source: Particulate Analyzers
Source: Flow and Opacity Monitors
Ambient: Particulate Analyzers
Ambient: Gas Analyzers
Under source gas analyzers the company lists the following:
Thermo Scientific instruments for source emissions monitoring needs.
Gas filter correlation gas analyzer with enhanced communication capabilities
Optical filter gas analyzer with enhanced communication capabilities for source emissions monitoring
Direct Methane, Non-Methane Analyzer, Model 55i
Measurement of direct and non-direct methane utilizing FID technology
Continuous monitoring of up to ten gases or more with only one system
H2S - SO2 Analyzer, Model 450i
Pulsed fluorescence technology catalytically converts H2S to SO2
High Level CO Analyzer, Model 48i-HL
Using gas filter correlation technology, the Model 48i-HL measures the amount of carbon monoxide in the sample.
High Level NO-NO2-NOx Analyzer, Model 42i HL
Chemiluminescent gas analyzer with enhanced communication capabilities
Hydrogen Chloride Analyzer, Model 15i HCl
New! Utilizing gas filter correlation technology it measures ppm levels of HCl
Low Source NO-NO2-NOx Analyzer, Model 42i LS
Low source chemiluminescent gas analyzer w/enhanced communication capabilities
It's time for a new standard in mercury emissions monitoring
NDIR Multi-Gas Analyzer, Model 60i
Five gas analyzer utilizing non-dispersive infrared technology
NO-NO2-NOx Analyzer, Model 42i
Chemiluminescent gas analyzer with enhanced communication capabilities for ambient air and source emissions monitoring.
NOx Only Analyzer, Model 42i-D
Using chemiluminescence technology, the Model 42i-D measures the amount of nitrogen oxides in the air from sub-ppb levels up to 100ppm.
Pulsed fluorescence gas analyzer with enhanced communication capabilities for ambient air and source emissions monitoring.
Total Hydrocarbon Gas Analyzer, Model 51i
Monitor Labs uses the following classification:
Products
· Continuous Emission Monitoring Systems
o In situ
· Flow Monitors
· Gas Monitors
· Opacity Monitors
· Particulate Monitors
· Software
Environnment S.A calls ambient monitoring “Air Quality” and splits this segment as follows:
Gas analyzers (SO2, H2S, TRS, NO, NO2, NOx, NH3, CO, CO2, O3, THC, BTX, VOC)
Open path multigas D.O.A.S. system
Particulates samplers and analyzers (TSP, PM10, PM2.5, PM1)
Data acquisition and data management softwares
Another category is Emission Monitoring split in the following manner:
Multi-gas stationary monitoring systems (extractive IR GFC, in situ IR GFC, FTIR, FID)
Dilution-based stationary monitoring systems
Portable or transportable monitoring systems
Long-term dioxin and furan sampling system
Data acquisition and data management softwares.
Wikipedia did not have much assistance in classification but they did have some information on measurement principles. Gas analyzers employ various techniques to accurately measure concentrations. Some commonly used techniques include: infrared and ultraviolet adsorption, chemiluminescence, fluorescence and beta ray absorption
The EPA technology transfer network has various papers which lead one to separate
predictive emissions monitors (PEMS) and CEMS. They single out hazardous air pollution control (HAP) CEMS, fabric filter bag leak detectors, ammonia CEMS, mercury, and PM (particulate).
Ron Jernigan has provided regular papers analyzing the experience with CEMs by the utility industry. The reporting segmentation is as follows:
Acquisition Method
1. Dilution extractive
2. Extractive
3. In situ
Principles of operation
1. SO2 Monitors
A. Fluorescence
B. UV Spectrographic
2. NOx monitors
A. Chemiluminescence
B. UV spectrophotometric
3. CO2
A. IR (Infra Red)
4. O2
A. Paramagnetic
B. Electrocatalytic
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