welding helmet auto darkening

welding helmet auto darkening This Auto-darkening Welding Helmet provides eye protection of welders against Ultraviolet and Infrared emissions. You can adjust the shade by the knob of Shade according to welding current, and you can also adjust the sensitivity of the filter by the knob of Sensitivity to meet the welding current from10 A to 300A.The Delay time is auto-regulated according to the welding condition. Technical Specification ·Cartridge Size:110×90×10 mm ·Viewing Window:98×43 mm ·Switch Time:(light to dark)0.1ms (dark to light) ≤ 0.2 - 0.7S ·Ultraviolet Protection: < 0.0003%(313 nm) < 0.006%(365 nm) ·Infrared Protection:< 0.01%(780- 2000nm) ·Shade Range: DIN 4 / 9 - 13 ·Weight: 500g ·Operating Temperature:- 5 to +55