Fire Detection

FIRE DETECTION SYSTEM

A fire detection system uses a smoke detector to detect a fire before it actually starts

Smoke Detection is an integrated system that senses and locates the presence of smoke, chemicals and fire, and then sends an alarm. Fire prevention is always a primary goal. A fire detection system is essential to alert system controllers and the nearest first responder to protect people, property and production processes, both indoors and outdoors.

Fire detectors may create an audible alarm, a system-linked alarm or both. They are wireless or wired and are most effective when daisy chained together. Wired detectors have two or four wires, the main difference being, the number of detectors that may be connected. Typically, smoke detectors are preferred to protect people while heat detectors are better at protecting property.

The most common are photoelectric smoke detectors. Each unit contains a chamber lined by screens with a photoelectric light shining at all times. When smoke enters the chamber, optical sensors – typically laser-assisted infrared – detect smoke particles interrupting the light path. To reduce false alarms, pattern recognition is used to differentiate between the way smoke, dust and steam interrupt the photoelectric beam.

Smoke detectors using photoelectric cells or an ionization process (or both) and carbon dioxide detectors are extremely effective in home environments. Optical beam sensors work well in large spaces as they are able to detect the spectral bands of hot gases. While both conventional smoke detection and Co2 detection systems work well in open spaces, they are poorly suited to tall buildings or industrial sites.

Harsh environments – considered ‘high-impact’ with chemicals and high levels of steam, damp or dust interfere with smoke detection, often resulting in late detecting or false alarms.

Smoke is typically seen by humans through its density. Video programs are designed to amplify this detection process. A video smoke detection system is able to detect smoke and fire and pinpoint its location from a great distance. The camera does not require physical contact with smoke or dust and video analytic increases speed and accuracy of detection. When analytics are integrated into a camera, there is no failure point in the security network and minimal bandwidth use.

In high-impact areas where a camera cannot be placed, an aspirating smoke detection system is well suited. It consists of a central detection unit which draws air through a network of pipes to detect smoke and are recommended for areas with high airflow and condensation as they are armed with multi-sensor capable of monitoring air quality for temperature, humidity, hazardous chemicals and smoke.

Unlike smoke or fire, carbon monoxide cannot be detected by sight or smell, and is lethal. Professional grade co2 detection typically uses an electromechanical sensor. The electrodes use chemicals to sense resistance change to trigger an alarm.

Smoke detection analytics can integrate with your LAN, Fire Alarm Control Panel, VMS or Event Notification Server and are beneficial, paired with other detections analytics, especially audio. Local codes and standards apply to placement and consultation with an expert will help you choose the Smoke detection technology best suited to your conditions.

FIRE DETECTION SYSTEMS

Fire Detection systems are designed to discover fires early in their development when time will still be available for the safe evacuation of occupants. Early detection also plays a significant role in protecting the safety of emergency response personnel. Property loss can be reduced and downtime for the operation minimized through early detection because control efforts are started while the fire is still small. Most alarm systems provide information to emergency responders on the location of the fire, speeding the process of fire control.

 

To be useful, detectors must be coupled with alarms. Alarm systems provide notice to at least the building occupants and usually transmit a signal to a staffed monitoring station either on or off site.

CONVENTIONAL FIRE ALARM SYSTEM

Multiple sensors in designated are managed through a control panel which allows you to quickly establish the general area where a fire has occurred, allowing effective management of an emergency situation.

ADDRESSABLE FIRE ALARM SYSTEM

Similar to a conventional system, but the control panel allows you to identify exactly which sensor or device i.e. call point has detected the fire, allowing you to pinpoint the point of origin.

ANALOGUE ADDRESSABLE FIRE ALARM

Also known as Intelligent Fire Alarm Systems, the aim of these alarms is to reduce the incidence of false alarms and they can incorporate a range of sensor types within a single area, including heat detectors, smoke detectors and call points. Information from these sensors is then fed to a computer within the control panel which assesses whether the sensor has been activated due to a fire, fault, pre-alarm or even simply because the sensor needs cleaning.

Who is it for?

An effective fire detection system eliminates damage A fire detection system uses a smoke detector to detect a fire before it actually starts. An effective fire detection system eliminates damage by ensuring that a fire can be prevented before it even starts. A fire detector may also have a direct connection to an alarm monitoring centre. Different premises have different protection requirements. The preferred detection device is the smoke detector. In premises not suitable for a smoke detector, such as kitchens, a heat detector is used. Hybrid detectors which combine smoke, heat and CO detection can be used in premises where vehicles are kept. Fire alarm specialty equipment, such as sampling systems, fibre-optic systems, digital linear heat detection cable, flame detectors and optical beam smoke detectors, can be used in premises not suitable for ordinary fire detectors. Read more about fire alarm specialty equipment. We supply fire detection systems to: Office buildings Shopping centres Industrial facilities Airports Hospitals Logistics centres Assisted living facilities Power plants Oil refineries and other special facilities

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