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Optrelp 350 Welding Helmets

Models K3500, K3501, K3502

Technical Data Type K3500 – Shade 10 passive welding lens K3501, K3502 - Auto-darkening Variable Shade, light shade 3, dark shade 9-13 adjustable by knob and sensitivity adjustment by knob Cartridge / filter dimensions 4 ½ inch x 5 ¼ inch / 114mm x 133mm Cartridge case material PC-ABS Blend Cartridge weight Variable shade 4.9 oz / 140 g Viewing area K3501, K3502 (variable shade) 3.86” x 1.93" / 98mm x 49mm Light transmittance ultraviolet/infrared protection maximum at any shade setting visible range activated shade level 9 - 13 visible range not activated shade level 3 Switching time light to dark 0.00036 s (0.36 ms) at 70 F Switching time dark to light 0.23 s Operation temperature 23F to 131°F / -5°C to +55°C Power supply solar cells, with replaceable batteries battery type Lithium CR 2032, qty 2 Arc detection K3501, K3502 (variable shade) “light guide technology” Water resistance Splash resistant – DO NOT SUBMERGECover lenses outside, intermediate ( in front of welding filter ) and inside ( behind welding filter ) Total weight 20 oz / 600 g (with variable shade cartridge) Helmet material Nylon - PA66 Headgear material HD-PE Standards ANSI Z87.1, CSA Z94.1 Warranty 2 years from date of sale ( auto-darkening cartridge ) Application ranges Most general arc welding processes: Electrode Welding (Stick Welding, SMAW) MIG / MAG (GMAW) Flux Cored Wire Welding TIG welding (GTAW) NOT designed for laser welding! Sperian Safety Products 1/3/08