Shade number is the capability of the lens to filter the incoming rays. Welding Lens Shade Guide What do welding shade numbers mean? Typically, two sensors are enough for simple work, but you should consider more number of sensors if you are doing more out of position welding. If the helmet has more number of arc sensors, then there will be fewer chances of its failing at a difficult time. Sensors are essential to measure the surrounding level of light. Welding helmets come with a range from 2 to 4 arc sensors. A simple welding helmet has a reaction time about 1/36,00 seconds, but more robust helmets come with a reaction time above 1/20,000 seconds. The time taken by the lens to switch from regular to protective shade is called lens reaction time. Otherwise, you have to consider the variable shade lens. Thus, if you are going to weld single material with a single process, then a fixed shade lens will be enough. While the variable lens darkens to a range of shades. Fixed one only darkens to a single shade and is used in passive welding helmets. Important things to consider for the lens of a welding helmetįirst of all, you must decide between a fixed or variable shade lens. Everything like the type of welding helmet, lens shade number, the amperage, and the kind of material you are going to weld, must be in your mind before endeavoring to weld adventure.
These incidents happen because we don’t use the right lens shade according to the requirement. Most of these injuries are welding-related. Almost 10,000 eye injuries are reported in the USA each year, according to US consumer product safety commission. Your safety from radiations, sparks, and spatter rely on this thing. The lens shade is the most important thing to check while choosing the best welding helmet for you.
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