Planning
Fire detection
4
58 | 108
Building Technologies
A6V10305793_m_en_--
Fire Safety
2016-02-15
4.2.4 Parameter sets: Sensor mode 2 'Smoke detector'
4.2.4.1 Description
Select sensor mode 2 when fast temperature changes may occur which are not
caused by fire (e.g. radiant heaters, hot engines). In this sensor mode the detector
only reacts optically; this is comparable with a wide-spectrum smoke detector.
However, because it has a second optical sensor, it reveals an optimized response
behavior in relation to the different types of fire.
(Parameter set numbers in brackets)
Robust (2):
This parameter set responds to aerosols in a similar way as the neural fire detector
in sensor mode 0 with the 'Robust' parameter set, without taking into account the
temperature.
Universal (1):
With 'Universal' the sensitivity and response time to aerosols are between 'Robust'
and 'Sensitive'.
Sensitive (3):
With regard to aerosols, this parameter set reacts in a way that is comparable to
'Fast Response' in sensor mode 0 without temperature influence.
Super Sensitive (5):
The parameter set can be selected for all point detectors OOH740 from ES
≥
20.
With regard to aerosols, this parameter set reacts in a way that is comparable to
the 'Super Sensitive' parameter set in sensor mode 0 without temperature
influence.
Ultra Sensitive (6):
The parameter set can be selected for all point detectors OOH740 from ES
≥
20.
This parameter set has an extremely high level of sensitivity for normal smoke
detectors. Only select 'Ultra Sensitive' for applications that require high sensitivity
and where no deceptive phenomena (visible aerosols) can be expected.
With the exception of '6', all parameter sets meet the criteria of standard EN 54-7.
