DELODUR® alarm glass
DELODUR® alarm glass is a toughened safety glass with an unobtrusive, current-carrying alarm loop burned into the glass surface. This connector loop, approximately 48 mm in diameter, is attached to the edge area of the glass pane and resembles a spider’s web. In small panes, as for example in muntin windows, the alarm loop might project into the visible glass surface, hence might be more noticeable.
In the event of damage DELODUR® alarm glass breaks into a net of glass crumbs. The alarm loop that carries bias current breaks, too, and the resulting fault will be conveyed to the connected burglary protection system. This system assesses the impulse and converts it into an alarm signal. Apart from this alarm-triggering function DELODUR® alarm glass has the same attributes as DELODUR® toughened safety glass.
When using DELODUR® alarm glass in double-pane insulating glass units it tends to be installed as outer glass pane. To protect it from sabotage and water the alarm loop will be positioned on the inner side of the pane towards the space between the glass panes. When used in a triple-pane glazing unit DELODUR® alarm glass may be either installed as outer or middle pane.