3M Speedglas 100 Bedienungsanleitung Seite 9

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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 filter, press the ON/SHADE button. The welding
filter automatically turns OFF after 1 hour of inactivity.
The welding filter has two photo sensors (see fig A:2) that react independently
and cause the filter to darken when a welding arc is struck. The welding
filter 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
filter making it flash when no welding is occurring. This interference can
occur from long distances and/or from reflected light. Welding areas must
be shielded from such interference.
Shade
Models Speedglas 100S-10 and Speedglas 100S-11 have a fixed 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 flashing. Move the
flashing 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.
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