Bosch AVENAR detector 4000 Datasheet
Fire Alarm Systems - AVENAR detector 4000
AVENAR detector 4000
u Highly reliable and accurate thanks to Intelligent
Signal Processing (ISP)
u Earliest detection of lightest smoke with dual-
optical versions (Dual-Ray technology)
u Monitors environment for electromagnetic
influence for fast root-cause analysis
AVENAR detector 4000 is a new range of automatic
fire detectors featuring a superb accuracy and
swiftness in detection. The versions with two optical
sensors (dual‑optical) are able to detect the lightest
smoke. The range includes versions with rotaries,
manually and automatically addressable, and versions
without rotaries for automatic address setting.
Functions
Sensor technology and signal processing
The individual sensors can be configured in the
FSP-5000-RPS programming software.
All sensor signals are analysed continuously by the
internal evaluation electronics (ISP - Intelligent Signal
Processing) and are linked with each other via an
inbuilt microprocessor. The link between the sensors
means that the combined detectors can also be used
where light smoke, steam or dust must be expected
during the course of normal operation.
Only if the signal combination corresponds to the
characteristics of the application site, selected during
the programming, the alarm is triggered automatically.
This results in less false alarms.
In addition, the time of the sensor signals on fire and
fault detection is analysed, which leads to high
detection reliability for each individual sensor.
In the case of the optical and chemical sensor, the
response threshold (drift compensation) is actively
adjusted. Manual or time-controlled switch-off of
individual sensors is possible for adjustment to
extreme interference factors.
Optical sensor (smoke sensor)
The optical sensor uses the scattered-light method.
u Automatic and manual address setting
An LED transmits light to the measuring chamber,
where it is absorbed by the labyrinth structure. In the
event of a fire, smoke enters the measuring chamber
and the smoke particles scatter the light from the
LED. The amount of light hitting the photo diode is
converted into a proportional electrical signal.
The dual-optical versions use two optical sensors with
different wavelengths. The Dual-Ray technology works
with an infrared and a blue LED so that lightest smoke
is detected fast and reliably (TF1 and TF9 detection).
Thermal sensor (temperature sensor)
A thermistor in a resistance network is used as a
thermal sensor from which an analog-digital converter
measures the temperature-dependent voltage at
regular intervals.
Depending on the specified detector class, the
temperature sensor triggers the alarm status when the
maximum temperature of 54°C or 69°C is exceeded
(thermal maximum), or if the temperature rises by a
defined amount within a specified time (thermal
differential).
Chemical sensor (CO gas sensor)
The main function of the gas sensor is to detect
carbon monoxide (CO) generated as a result of a fire,
but it will also detect hydrogen (H) and nitrous
monoxide (NO). The sensor signal value is
proportional to the concentration of gas. The gas
sensor delivers additional information to effectively
suppress deceptive values.
Since the service life of the gas sensor is limited, the
C sensor shuts down automatically after a maximum
of 6 years of operation. The detector will then still
operate as a multi-sensor detector with dual-optical
Fire Alarm Systems - AVENAR detector 4000
2 | 5
and thermal sensor. It is recommended to exchange
the detector immediately in order to keep the higher
detection reliability of the version with C sensor.
Improved LSN features
AVENAR detector 4000 offers all the features of the
improved LSN technology:
• Flexible network structures, including T‑tapping
without additional elements (no T-tapping feasible
for versions without rotaries)
• Up to 254LSN improved elements per loop or stub
line
• Automatic or manual detector addressing, with or
without auto-detection
• Power supply for connected elements via LSN bus
• Unshielded fire detection cable can be used
• Cable length up to 3000m (with LSN1500A)
• Backwards compatibility to existing LSN systems
and central units
• Monitoring of environmental electromagnetic
impact for fast root-cause analysis (EMC values are
displayed on the panel)
In addition, the range offers all the established
benefits of LSN technology. The panel programming
software can be used to change the detection
characteristics of the respective room utilization. Each
configured detector can provide the following data:
• Serial number
• Contamination level of the optical section
• Operating hours
• Current analog values
– Optical system values: current measured value
of the scattered light sensor; the measuring
range is linear and shows different degrees of
pollution, from slight to heavy.
– Contamination: the contamination value shows
how much the current contamination value has
increased relative to the original condition.
– CO value: display of the currently measured
value.
The sensor is self-monitoring. The following errors are
indicated on the fire panel:
• Fault indication in the event of the failure of the
detector electronics
• Continuous display of contamination level during
service
• Fault indication if heavy contamination is detected
(instead of triggering a false alarm)
In the event of wire interruption or short-circuit,
integrated isolators maintain the functional security of
the LSN loop.
In the event of an alarm, individual detector
identification is transmitted to the fire panel.
Further characteristics
• A red flashing LED visible 360° indicates the alarm.
• Connection to a remote indicator is possible.
• The strain relief for cables in false ceilings prevents
the cables from being unplugged accidentally from
the terminals after installation. The terminals for
cable cross-sections up to 2.5mm2 are very easily
accessible.
• The detectors have a dust-repellent labyrinth and
cap construction. The chamber maid plug (an
opening with closing plug) on the bottom is used to
clean the optical chamber with compressed air (not
required for the heat detector).
• The detector bases no longer have to be directed
due to the centralized position of the individual
display. They also have a mechanical removal lock
(can be activated and deactivated).
Certifications and approvals
Region Regulatory compliance/quality marks
Europe
Germany
Europe
CPR
CPR
CPR
CPR
CPR
CPR
CPR
CPR
VdS
VdS
VdS
VdS
VdS
VdS
VdS
VdS
VdS
VdS
VdS
VdS
CE
0786-CPR-21402 FAH-425-T-R
0786-CPR-21403 FAP-425-DO-R
0786-CPR-21405 FAP-425-DOTC-R
0786-CPR-21404 FAP-425-DOT-R
0786-CPR-21398 FAP-425-O
0786-CPR-21399 FAP-425-O-R
0786-CPR-21400 FAP-425-OT
0786-CPR-21401 FAP-425-OT-R
G214100 FAP-425-O
G214099 FAP-425-O-R
G214098 FAP-425-OT
G214097 FAP-425-OT-R
G214101 FAH-425-T-R
G214104 FAP-425-DO-R
G214103 FAP-425-DOT-R
G214102 FAP-425-DOTC-R
G119016 FAP-425-DOTC-R
G119017 FAP-425-O-R
G119018 FAP-425-OT-R
G119019 FAH-425-T-R
FAP/FAH/FAD-425
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