Posted by admin on Sunday, April 18, 2010 · Leave a Comment
is 20 amp tig rating any good ? whats the best rating ? Im a welder but I never heard of any ratings for auto darkening.
Doesnt make sense to you ? really ? well I found out it means how dark the screen gets with those ratings.
look at the link and go to specifications. you will see it there.
also I know they dont have ratings because they have an option to change the darkness. I own 2 auto darkening helmets.
"20 amp TIG rating"? That doesn't make any sense at all......
For traditional helmets, the darkness of the glass was measured in "shades" For arc welding you'd want between shade 9 to shade 13..
Any and all auto darkening helmets sold in the US must meet minimum OSHA standards as far as blocking infrared and UV rays.
There isn't really a "rating system" for auto-dark helmets. Most auto-dark helmets have a knob that you can adjust the darkness of the shade to whatever you need. Like many things in life, the rule of thumb is "you get what you pay for." This applies to auto-dark helmets.
Also, most TIG welding applications use 50-200 amps or more. 20 amps would only be used for welding unusually thin materials. You'd need a special torch for that low a current.
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