dourobob
Platinum Member
- Joined
- Mar 27, 2002
- Messages
- 672
- Tractor
- Wheel Horse 522xi
In an earlier posting <font color=blue>dekker </font color=blue>said
<font color=blue>The auto-darkening helmets always block the dangerous UV wavelengths
The ANSI spec for auto darkening hoods requires the equivalent UV protecton to a shade 14 fixed lens at all times. The LCD only modulates the *visible* light levels passing through the lens. Permanent UV filters are bonded to the LCD to handle the UV. It doesn't matter if the LCD is working or not, the UV filters always are, just like a fixed shade (or better since you won't be nodding your head to shake the hood down as you strike the arc.)
If the LCD and electronics totally failed the worst that would happen would be your seeing spots for a while, but you will not be hurt. </font color=blue>
As a novice welder who is having great difficulty with the convential lens because I lose track of where I am I would really appreciate any suggestions on the "BEST" product to buy - while cost may be a factor it is my eyesight I want to protect so I am willing to pay in order to do that.
Thanks
Bob
<font color=blue>The auto-darkening helmets always block the dangerous UV wavelengths
The ANSI spec for auto darkening hoods requires the equivalent UV protecton to a shade 14 fixed lens at all times. The LCD only modulates the *visible* light levels passing through the lens. Permanent UV filters are bonded to the LCD to handle the UV. It doesn't matter if the LCD is working or not, the UV filters always are, just like a fixed shade (or better since you won't be nodding your head to shake the hood down as you strike the arc.)
If the LCD and electronics totally failed the worst that would happen would be your seeing spots for a while, but you will not be hurt. </font color=blue>
As a novice welder who is having great difficulty with the convential lens because I lose track of where I am I would really appreciate any suggestions on the "BEST" product to buy - while cost may be a factor it is my eyesight I want to protect so I am willing to pay in order to do that.
Thanks
Bob