Fire alarm device e.g. ionization smoke detector, for detection and notification of fire in e.g. false ceiling, has evaluating unit evaluating measurement values over time span as measurement value profiles, and testing device functionality

摘要

The device (1) has a sensor (3) for detecting fire based on a fire-specific environment factor (8) in a measuring region (4). The sensor outputs sensor signals (9), which are based on the factor. A test unit (10) includes an electrical heating element, and outputs test gas (11) into the region. The factor in the measuring region is simulated by the test gas. An evaluating unit (12) evaluates the sensor signals as measurement values (X). The evaluating unit evaluates the measurement values over a time span as measurement value profiles, and tests functionality of the device. The environment factor is smoke gas. The electrical heating element is coated with plastic. The sensor is a photodiode. An independent claim is also included for a method for functional testing of a fire alarm device.