Bajaj has years of experience in the area of fire detection and fire alarm systems. Our close co-operation with fire specialists within the Securitas Group also drives our continual advances in the areas of R&D and production.
Our products are as well suited as the areas of application are varied: fire detectors, smoke detectors, sensitive detectors, alarm systems, etc., combine to create efficient monitoring systems.
Cutting-edge security technology and state-of-the-art know-how and experience provide the sound foundations from which to solve even the most complex tasks. In difficult cases special fire alarm systems underscore Bajaj strengths. These alarm systems are used in special ambient conditions or spatial conditions that preclude the use of conventional fire detectors. They provide a powerful and convincing solution no matter how complex the problem.
The ASD 535 aspirating smoke detector consists of one or two independent sampling pipes, each having one or more sampling apertures and a sampling chamber. The air of the space being monitored is sucked in for precise analysis by the scattered-light smoke detector located in the sampling chamber. If it detects smoke particles beyond a preset threshold, it triggers an immediate alarm, allowing the fire brigade to deal with the fire before it has time to break out.
Inside its heat measurement cable is a multitude of highly sensitive sensors which signal any notable temperature rises and any increases in infrared radiation to the cable terminal processor with lightning-fast accuracy. The response behaviour of each of these sensors can be programmed individually. This means it adapts perfectly to its environment and supplies extremely accurate data to the system. Alarms can be located with great precision. Temperature ranges of between –55 oC and +125oC, 100% relative humidity: even under extreme conditions the SecuriSens MHD 535 linear heat detector goes about its duties with complete reliability. The sensor cable, with a maximum length of 2000m, is installed as a stub line.
Corrosive gases, extreme humidity, high temperatures and polluted air entail difficult operating conditions for reliable fire detection. Linear heat detectors are based on the physical principle that, for a given volume, the pressure of a gas changes whenever its temperature changes. Over a distance of approx. 100 m a copper sensor tube monitors the ambient temperature. A fire source will heat up the sensor tube locally and with it, the air it contains
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