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Inside the Gas Analyser – the Tuneable Diode Laser

Inside the Gas Analyser – the Tuneable Diode Laser

OPSIS is probably best known for its gas analyser systems based on broad-band (“white”) light from xenon lamps and spectrometers or interferometers as the core analysis devices. However, OPSIS also offers an instrument type base on a quite different optical technique – light absorption detected by utilizing a tuneable diode laser. Let’s take a closer look!
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The Positive of Negative Numbers

The Positive of Negative Numbers

You may have seen a gas concentration reported as less than zero, and that may have made the alarm bells go off. There can of course not be less than no molecules present in the air. But it doesn’t have to mean that the monitoring equipment is bad, it can just as well be valuable data. Let’s take a closer look on how that works!
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Fence-line Monitoring: Benzene and Beyond

Fence-line Monitoring: Benzene and Beyond

Fence-line monitoring of the ambient air around industrial facilities can protect health and environment, but it can also help track leaks and improve production quality. How does it work, and what should be monitored? Here’s an introduction to the subject.
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