1 ï
3
If the protection meets the requirements at extremes of temperature (-5°C
to +55°C) the marking is completed with the letter T. Additional markings
on the product refer to other standards.
FUNCTIONS

On/Off

To activate the welding lter, press the ON/SHADE button. The welding
lter automatically turns OFF after 1 hour of inactivity.
The welding lter has two photo sensors (see g A:2) that react independently
and cause the lter to darken when a welding arc is struck. The welding
lter may not go to dark position if the sensors are blocked or the welding
arc is totally shielded.
Flashing light sources (e.g. safety strobe lights) can trigger the welding
lter making it ash when no welding is occurring. This interference can
occur from long distances and/or from reected light. Welding areas must
be shielded from such interference.

Shade

Models Speedglas 100S-10 and Speedglas 100S-11 have a xed dark
shade where no setting is required.
Model Speedglas 100V has selectable dark shade settings. Five different
Shade Number settings, 8-12, are available in the dark state. In order to
see the current Shade Number setting, momentarily press the ON/SHADE
button. To select another Shade Number, press the ON/SHADE button
repeatedly while the LED indicators on the display are ashing. Move the
ashing LED to the desired Shade Number.
In all welding processes the arc should only be viewed with the
recommended dark shade. See table page 217.