In order to retain dust in the gas sample collected, we strongly suggest the usage of a filtration unit..
The standard filters are usually composed of a ceramic material, although there is a possibility of choosing other materials, according to the sample characteristics - With a 0,3 µm or 0,5 µm porosity filter, a 99,98% dust retention rate is generally obtained.
To avoid the condensing of the sample in the filter, which together with the dust causes a thin layer of slurry (blocking the passage of the sample), we recommend the use of an heating ring controlled by a flow monitor or temperature controller.
If you desire to fully protect the filtration unit and other components from the weather conditions (specially in harsh environments), the use of a stainless steel protection case. is mandatory
The filtration units are normally provided in a Continuous Emissions Monitoring System (CEMS) or in a Process Analysis integrated solution..
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