A helmet is an essential gear be it for a professional welder or a Do-it-Yourself kind of person. The market is flooded with a variety of helmets types and brands, but there are very few which meets the standards. These standards make sure that they check the quality of helmets needed for skull welding arcs which emit lenses effectively block harmful rays. www.planetengineering.com, a leading portal, suggests that irrespective of the brand you choose check if it conforms to ANSI Standards of complete UV and IF radiation protection.
Auto Darkening vs. Standard lens
Auto Darkening Lens Helmets and non-auto-darkening or standard lens helmets are available in the market. Industry experts recommend Auto Darkening Helmets. In Non-Auto darkening helmets to lower or raise the hood for welding, you need to bend your head. That causes a lot of trouble to the wearer while welding. The other disadvantage is that the quality of welding in tight spots takes a beating as you need to constantly nod your head to bring the lens down to your face and lifting it back up.
Auto Darkening Helmets have filters that resolve the issue mentioned above. You need not bend your head to bring it down; the filter adjusts the shade of the lens as soon as the arc is started. That makes the life of a welder so much easier and safer.
ADF (Auto Darkening Filter)
It is an LCD, powered by batteries. The batteries can be solar, lithium or a hybrid of both. Once the arc is started there are light sensors on the helmet which will detect the changes and reduce the filter shade appropriately. When the arc is inactive, you can easily see through the helmet. The presence of ADF is the reason why auto darkening helmets are a favorite as the hood of the helmet stays down, and there is no nodding of head needed.
Features to consider before buying an auto darkening helmet
Fixed or variable shade lens
Fixed lens is useful if you are welding a single type of material, where there is no need to adjust the shade.
Variable lenses are useful if you are welding more than one type of material. This lens protects your eyes from varying degrees of brightness emanating from the arc as you will need shade adjustment accordingly.
Helmets with a solar cum replacement batteries is a more suitable option than the ones which are only solar powered. If you are looking for a cheaper option, some helmets also use regular AAA batteries.
Shade and delay controls of helmets can be either external or internal. External controls give you more convenience than the internal ones as you can make adjustments without removing your helmet.
Reaction time of lens
It is better to go for a lens with minimum response time. That means the lens will quickly start the shading process as soon as the arc is started, protecting your eyes. This number should be in milliseconds, the faster the switching from light to dark and dark to light, the better.
Following the above steps, while selecting a welding helmet based on your needs is pretty straightforward.