Flue Gas Flow Indicator
A fume flow indicator is an optical device that visually marks air flows and extraction zones. It checks the efficiency of extraction before welding.
Physical-Chemical Mechanism of Action
A fume flow indicator uses an optical principle to make particles in the air streams visible. These particles can, for example, be fine dust or specially developed carriers.
Metallurgical Relevance & Risks in Welding
Proper extraction is crucial to remove fumes and toxic substances. An incorrect extraction flow can lead to incomplete removal of welding fumes, which poses health risks and leads to quality issues on the workpiece.
Workshop Practice & Instructions
Before starting to weld, the fume flow indicator must be activated. The air streams should be visible and cover the extraction area. If streams are missing or irregular, the extraction equipment must be checked and optimized.