China Solar Automatic Variable Photoelectric Welding Protective Mask Welding Helmet

1. Scope of application: all welding except laser welding, such as electric welding, argon arc welding, gas shielded welding, tin welding, etc.
2. Bright state: DIN 4
3. Dark state: DIN9-13 free adjustment (external adjustment)
4. Sight glass size: 96X48X6mm
5. Response time (from bright to dark): <1 / 25,000 seconds (under normal temperature)
6. Return time (from dark to bright): adjustable: 0.15S ~ 0.80S
7. Sensitivity (according to the current size when welding): adjustable: low / high
8. Battery: Lithium battery (replaceable) + solar battery
9. Self-checking function: yes
10. Low battery display: yes
11 photosensitive tubes: 4
12. UV transmittance: 313nm≤0.00006% 365nm≤0.00006%
13. UV protection: 16 levels
14. Infrared transmittance: 780 ~ 1300nm≤0.003% 1300 ~ 2000nm≤0.009%
15. Working temperature: -5 ° C ~ + 55 ° C (23 ° F ~ 131 ° F)
16. Storage temperature: -20 ° C ~ + 70 ° C (-4 ° F ~ 158 ° F)
17. Mask material: Super light reinforced PP material imported from Korea
18. Weight: 450G