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Laser diode gas analyser

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ECOTECH has released the Opsis LD500 laser diode gas analyser - an open path monitoring system which uses the differential optical absorption spectroscopy technique for the continuous monitoring of one or more compounds in ambient air or source emissions.

The LD500 projects a laser from an emitter through the monitoring path to a receiver which may be located from one metre to 500 metres away, the light is then transferred to the LD500 analyser via a fibre optic cable for analysis and storage of data.

Each LD500 analyser can house up to four laser diode modules. Each head is a complete laser control and data sampling system. A built-in PC with LCD display controls the function of the instrument.

The following laser modules are available:

· LH511 for HF/H2O.

· LH512 for HCl/H2O.

· LH513 for NH3/H2O.

· LH514 for CO/CO2/H2S.

· LH515 for O2 and temperature.

· LH516 for CH4/H2O.

The LD500 laser diode analyser can be used in various configurations. The basic system consists of one laser module monitoring over one monitoring path.

Additional laser modules can be mounted in the analyser and/or a multiplexer can be integrated in the system in order to create up to six monitoring paths.

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