Alsident System A/S - General information on local extraction. When is extraction to be established? What is encapsulation? What is an airflow alarm and where to put it?
Local extraction is established in direct connection to the working process. This is done in order to remove the hazardous vapours and substances as closely to the source as possible before they are spread into the room.

When do I need local extraction?

We recommend local extraction at working processes delevoping gasses, dust etc. that are hazardous to health or explosive. We also recommend local extraction at working processes developing disturbing fumes, aerosols and bad smells.
Please notice that local extraction is also established at work places with varying duration and frequency of the process in operation.

Encapsulation in cabinets

In some cases, it is more efficient to carry out the working process inside a cabinet encapsulating the pollution and preventing it from spreading into the surroundings. This can be advantageous eg for work with laboratory analysis equipment or for working processes generating large amounts of dust, such as grinding.

Airflow alarm

Our Alsident® airflow alarm is mounted on the extraction arm in order to monitor the airflow through each arm. The airflow alarm gives a visible and/or audible signal when the airflow gets below the needed level and becomes insufficient.

More information on the extraction arms from Alsident System:

Alsident System Brancher
Alsident System Dimensioneringsprogram
Find recommandations and products relating to your trade.
The extraction arms consist of articulated pipes providing  great flexibility. Together with the internal spring or the external gas spring, the construction is self-supporting. .
Our accessory line includes many hood designs for each system which makes it possible to choose the best hood for your work process and type of pollution.
Find and visualize the extraction arm that matches your requirements.