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Glossary
Alarm device
Element in the fire detection system for acoustic and/or visual alarming, e.g. alarm sounder, beacon.
Alarming control
Monitoring and controlling the alarming equipment
Alarming equipment
Alarm devices and remote transmissions
Area
The top level in the detection tree. Sections and zones are assigned to the area.
AVC
Abbreviation for 'Alarm Verification Concept'.
Control tree
Structure tree with control group and control.
Danger level
A fire detector signal which conveys the possibility of fire. Automatic fire detectors, for example, have
danger levels 0 to 3. Manual call points only have danger levels 0 and 3. 0 = no danger, 1 = possible
danger, 2 = probable danger, 3 = highly probable danger.
Detection tree
Diagram of the geographical and organizational arrangements of sensors in a building. This is a hierarchical
structure comprising the area, section, and zone.
False alarm
Alarm not triggered by a danger.
Floor repeater terminal
A display device with operating elements for acknowledging and resetting alarms and faults.
Global alarming
Global alarming equipment (e.g., remote transmission) is actuated and external intervention forces (e.g., the
fire brigade) are alerted.
Isolation
Status of one part of the fire detection installation, which suppresses the evaluation of all signals.
Local alarming
Local alarming equipment (e.g. acoustic or optical) is actuated in order to call up intervention personnel and
to alert people of a possible fire hazard.
Minor incident
Alarm situation which the operating personnel can handle themselves and does not, therefore, trigger global
alarming.
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