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Measure it fast and measure it accurately

Gasmet Technologies Oy
Gasmet Technologies develops and manufactures gas monitoring systems for demanding industrial applications. Numerous power plants, waste incineration units, and cement kilns worldwide use Gasmet™ systems to measure their stack emissions. Many others also use the company’s rugged portable analyzers.

The first generation of Gasmet™ gas analyzers was introduced in 1993 and has since been followed by a stream of new and innovative products. Much of their success can be attributed to the fact that they are based on state-of-the-art measurement techniques, such as FTIR (Fourier Transform Infrared) spectroscopy, which is the most advanced technology available today for continuous gas analysis.

FTIR enables dozens of different organic and inorganic compounds to be monitored very accurately within seconds, even in minute concentrations of parts per billion (ppb). Typical gases monitored include CO2, CO, SO2, NOx, N2O, NH3, CH4, VOCs, and other potentially harmful substances. In addition to speed, a multicomponent analysis capability, and class-leading sensitivity, Gasmet™ FTIR gas analyzers also offer excellent specificity and simple calibration.

Bringing the lab to the field

The need to measure ambient air concentrations has been growing in recent years, with researchers looking into phenomena such as greenhouse gas emissions from natural sources such as lakebeds and forests, and the authorities keen to improve their capabilities to measure toxic gas levels after chemical accidents and other incidents.

The Gasmet™ DX4030 brings FTIR analysis to the field in a rugged, easy-to-use package. Its advanced capabilities make it ideal for a wide range of needs.

Designing a good portable ambient air analyzer is something of a challenge, however. While it is easy to produce a small detector that is lightweight and simple to use, they are often incapable of giving reliable results and are limited to simply identifying any gaseous compounds present rather than showing actual concentrations. The alternative is to design a dedicated gas analyzer capable of providing quantitative data, but this often requires the operator to have a scientific background, and they can be difficult to use in field conditions due to their size.

Gasmet Technologies set out to combine the best of both approaches and came up with the Gasmet™ DX4030. This lightweight FTIR gas analyzer is small and rugged enough to fit in a backpack, yet can detect up to 25 gases simultaneously and provide validated results in less than 30 seconds, as samples do not have to be preconcentrated. An easy-to-use PDA-based user interface means that it can be operated without any prior experience of gas analysis.

The unit comes with a reference library of 250 gases, which makes it particularly useful in situations where unknown gases are encountered and enables a single Gasmet™ DX4030 to be used for many different applications, ranging from identifying toxic gases at an accident site to monitoring anaesthetic gas levels in an operating theatre.

> Ilari Patrakka
(Published in HighTech Finland 2010)