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Thermox analyzers from Ametek are among the most established combustion monitoring and control devices available today. A broad range of products is available for analyzing oxygen, combustibles, and methane in combustion flue gases for combustion control, safety, and thermal NOx reduction. Industries served include Electric Power Generation, Petroleum Refining, Petrochemical Processing, Cement & Lime Manufacturing, Glass and Ceramics,
Pulp & Paper, Iron & Steel, and Non-Ferrous Metals production.
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Furnace and Inert Atmosphere Control Analyzers
Oxygen analyzers for PPM O2 in inert blanketing gases and extended-range oxygen analyzers for monitoring premix burner atmospheres in glass, metal, and ceramics coating, curing and surface treating furnaces.
WDG IVM Download printable brochure: WDG IVC IVM IVCM IQ - Remote Calibration Unit
The WDG-IVM analyzer measures oxygen, combustibles and
methane in natural gas-fired applications. It is ideal for gas-fired power boilers
or for those using natural 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. Available with Series 2000 controller or integrated /IQ electronics.
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Weatherproof, stainless steel sensor enclosure
- Zirconium oxide oxygen cell
- Catalytic methane detector for 0-5%
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Class I, Div. 2 or Class I, Div. 1 option
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Two isolated current outputs
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Four alarms
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Diagnostics
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RS-485
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Requires handheld or wall-mount IQ Link
- HART option available
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UL Listed, CE Compliant
Some applications use the flue gas not only to generate heat, but also to alter the properties of the product
exposed to it. Here fuel efficiency is not as important as the
oxidizing or reducing properties of the flue gas. This is
called heat treatment and is used on many metals, ceramics, glasses and other materials. By adjusting the air/fuel ratio to the burner, the flue gas is controlled to be as oxidizing or reducing as needed. The exact air-to-fuel ratio which gives
theoretically perfect combustion is called stoichiometric. Using more air than the stoichiometric amount creates an oxidizing effect; less air than stoichiometric creates a reducing effect. This latter condition is known as substoichiometric (other terms include excess fuel, reducing or Lambda <1) and can be used to alter the physical properties of products or to prevent the formation of NOx. For example, reducing conditions are necessary to make colored glass. In some applications, such as bright annealing, a highly reducing atmosphere is required, but the product
would be damaged by carbon-containing gases so a flue gas from fossil fuels cannot be used. In such cases a mixture of nitrogen and hydrogen (or cracked ammonia) is commonly used. It is easier and less expensive to use a flue gas as the furnace atmosphere whenever possible. Thermox XS Fuel software allows the zirconium oxide cell to follow sub-stoichiometric as well as oxidizing atmospheres.
In the following applications it may sometimes be desirable to
run sub-stoichiometrically and to have some way of knowing at all times how oxidizing or reducing the process is:
Heat treatment of metals
Wire manufacturing
Heat treatment of ceramics and porcelains
Primary stage of a thermal oxidizer (incinerator)
Manufacture of specialty glass, e.g. colored glass
Primary stage of a low NOx burner
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