Online Laboratory Magazine


Emissions monitoring in shipping

Bühler Technologies GmbH

The emission monitoring is structured like land-based applications and is based on the scope of the exhaust systems to be monitored.

Using a heated gas sampling probe, the measurement gas is taken from a suitable point and, in order to avoid the formation of disruptive condensate, is fed to the analysis system via a heated measurement gas line. This system is divided into two functional levels:

The first stage is the processing system. A sample gas pump is located here, which continuously conveys the gas sample from the sampling probe into the analysis system. A fine filter then removes any particles that may be present from the gas flow.

In the following two-stage sample gas cooler, the sample gas is 'dried', i.e. the moisture contained in the gas is precipitated by falling below the dew point and removed by means of condensate pumps. Behind the cooler, a humidity sensor monitors the correct degree of dryness of the measuring gas, for which the correct flow rate for the analyzer located in the second stage is now regulated in an electrically monitored flow meter.

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