3M Speedglas 9100 Instrucciones De Uso página 9

1 ï
Sensitivity
The programming and sensitivity of the photo detector system (which
responds to the light from the welding arc) can be adjusted to accommodate
a variety of welding methods and workplace conditions. In order to see the
current sensitivity setting, momentarily press the SENS button. To select
another setting, press the SENS button repeatedly until the LED shows the
desired setting.
Position
Position 1
Position 2
Position 3
Position 4
Position 5
Position
Position locked light state
This setting could be used for grinding or other non-welding activities. When
the welding filter is locked in the light state (shade 3) the LED under the
symbol will flash every 8 seconds to alert the user. The welding filter must be
unlocked before arc welding is performed, by choosing a sensitivity setting
for welding. When the welding filter turns OFF (after 1 hour inactivity), it will
automatically leave the locked state and go to sensitivity setting 2.
Position 1-5
If the filter does not darken during welding as desired, increase the
sensitivity until the welding filter switches reliably. Should the sensitivity
be set too high, the filter may remain in the dark state after welding is
complete due to ambient light. In this case, adjust the sensitivity downward
to a setting where the welding filter both darkens and lightens as desired.
4
Locked in light state (shade 3) at all times
Used for grinding
Least sensitive setting. Used if there is interference
from other welders' arcs in the vicinity.
Normal position. Used for most types of welding
indoors and outdoors.
Position for welding with low current or with stable
welding arcs. (eg TIG welding)
Suitable for very low current welding, use of inverter-
type TIG welding machines.
Most sensitive setting. Used for TIG welding where
part of the arc is obscured from view.
Locked in selected dark state. Same function as a
passive welding filter.