Fire Alarm Systems - AVENAR detector 4000
AVENAR detector 4000
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.
uHighly reliable and accurate thanks to Intelligent Signal Processing (ISP)
uEarliest detection of lightest smoke with dualoptical versions (Dual-Ray technology)
uMonitors environment for electromagnetic influence for fast root-cause analysis
uAutomatic 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
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 254 LSN 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 3000 m (with LSN 1500 A)
•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.
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•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 2.5 mm2 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 |
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Europe |
CPR |
0786-CPR-21402 FAH-425-T-R |
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CPR |
0786-CPR-21403 FAP-425-DO-R |
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CPR |
0786-CPR-21405 FAP-425-DOTC-R |
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CPR |
0786-CPR-21404 FAP-425-DOT-R |
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CPR |
0786-CPR-21398 FAP-425-O |
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CPR |
0786-CPR-21399 FAP-425-O-R |
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CPR |
0786-CPR-21400 FAP-425-OT |
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CPR |
0786-CPR-21401 FAP-425-OT-R |
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Germany |
VdS |
G214100 FAP-425-O |
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VdS |
G214099 FAP-425-O-R |
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VdS |
G214098 FAP-425-OT |
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VdS |
G214097 FAP-425-OT-R |
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VdS |
G214101 FAH-425-T-R |
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VdS |
G214104 FAP-425-DO-R |
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VdS |
G214103 FAP-425-DOT-R |
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VdS |
G214102 FAP-425-DOTC-R |
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VdS |
G119016 FAP-425-DOTC-R |
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VdS |
G119017 FAP-425-O-R |
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VdS |
G119018 FAP-425-OT-R |
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VdS |
G119019 FAH-425-T-R |
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Europe |
CE |
FAP/FAH/FAD-425 |
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