Continuous Gas Analyzers for Emission Compliance
CGAs provide ppb to % concentration data of gaseous samples for the refining, petrochemical, natural gas, and specialty gas industries, plus many more. H2, CO, CO2, O2, NOx, SO2, and even more difficult components like HCl, THC, NH3, HF or CH2O can be monitored using various detection methods. A principal use for CGAs is Continuous Emission Monitoring (CEM) to meet environmental regulations.
Rawson/Industrial controls offers multiple solutions, from NIR and UV, to in-line zirconium oxide O2 analyzers, to laser or mass spectroscopy, so we can tailor the measurement technique to our customers’ needs.
ABB Measurement
What to Check Before Selecting a Continuous Gas Analyzer
Start with the gases you need to measure and the concentration range expected in the stream. The Rawson page covers measurements from ppb levels through percentage concentrations, but not every analyzer or detection method is suited to every component. Share the target gases, expected range, sample conditions and whether the application is process monitoring or emissions compliance. These details help narrow the measurement options before a model is selected.
Also consider the installation and how the readings will be used. Let the supplier know whether the sample comes from a flue gas line or another process stream, what operating conditions are present, and whether the readings must feed into an existing monitoring or control system. The right setup depends on the application and on which products are available for your location. To discuss a specific requirement, use Rawson’s quote request form to share the application details with the team.
When to Consider Other Gas Analysis Methods
Continuous gas analyzers are useful for ongoing concentration measurements. If the main task is to separate and identify several components in a gas mixture, compare the options on the Gas Chromatographs page. For measurements focused on water content, see Moisture Analyzers.
Fuel quality work may call for a different measurement. Rawson’s Wobbe Value Analyzers page covers heating value and BTU analysis, while Sulfur Analyzers focus on sulfur compounds found in natural gas and other process streams. To compare the available analyzer types, start with the broader Gas Stream Analyzers range.
Frequently Asked Questions
What does ppb mean in gas analysis?
Can one continuous gas analyzer measure more than one gas?
How often should a continuous gas analyzer be calibrated?
Does a continuous gas analyzer need sample conditioning?
It depends on the analyzer and the gas stream. Some applications need the sample temperature, pressure or moisture controlled, or particles removed, before measurement. Confirm the required setup with the analyzer supplier.
What information should I provide when requesting an analyzer quote?
Provide the gas components, expected concentration range, process or emissions application, sample conditions, installation location and any reporting or control system requirements. These details help the team assess suitable options.
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