Fire Alarm System is designed to notify us of an emergency situation so that we can act to safeguard ourselves, our staff as well as the general public.
Fire alarms can be present within Offices, Factories, and public spaces. They are elements of our daily routine but they are usually not noticed until an emergency occurs and at that point, they could help us save our lives.
No matter what the method of detection is, when the alarm goes off, the alarms will sound to alert anyone in the building there is a possibility of an emergency and urge them to leave.
This fire alarm could also include a remote alarm system, which can alert the fire brigade using the central station.
What do you mean by a “fire alarm” also known as a fire detector system? For this post, we’ll examine the basic structure and features of “Fire Alarm Systems“.
Different Types of Fire Alarm Detectors
The core of an alarm system for fire is the detection equipment that ranges from sophisticated, smart smoke detectors, to simple manual break glass units There is a broad variety of kinds, however, we can classify them into groups like:
– Heat detectors
– Smoke detectors
– Carbon Monoxide detectors
– Multi-sensor detectors
– Manual Call Points
They can operate on a pre-determined temperature that triggers alarms if the temperature is higher than a set threshold or according to the change in temperature.
Commonly, Heat detectors operate in the same way as an electrical fuse. The detectors comprise a eutectic alloy that is sensitive to heat. When an appropriate temperature is reached. the alloy changes from solid to liquid. This activates the alarm.
There are three main kinds that smoke detectors can be found:
– Light Scattering
– Light Obscuring
Ionization Smoke Detector
The Ionization Smoke detector typically has two chambers. The first serves as a reference for compensating for variations in temperature, pressure, or humidity.
The second chamber houses a radioactive source, typically alpha particles that ionize the air flowing through the chamber. A current is flowing across two electrodes.
Light Scattering Smoke Detector
The smoke detector that scatters light relies on utilizing the Tyndall effect. the light source and a photocell are separated through a darkened room so that light sources do not directly hit the photocell.
The smoke’s passage through the chamber causes the light coming from the source to scatter and then fall onto the photocell. The output of the photocell is utilized to trigger an alarm.
Light Obscuring Smoke Detector
In the Light obscured smoke detector smoke interferes with the light beam that is reflected from the photocell and a light source. The photocell determines its light intensity. is receiving.
The variations in output from photocells can be used to set off an alarm.
Carbon Monoxide Detectors
Carbon monoxide detectors, by the name of CO fire detectors. They are electrical detectors that are used to detect the emergence of fire by detecting the presence of carbon monoxide that is present in the air.
It is poisonous because it’s that is produced by the combustion process.
In this case, the detectors in this instance aren’t identical to carbon monoxide detectors that are used at home to safeguard inhabitants from carbon monoxide emitted through incomplete combustion of appliances like boilers or gas fires.
The Multi-sensor detectors incorporate inputs from optical as well as heat sensors and process them with an advanced algorithm that is integrated into the detector circuitry.
When a control panel, the detector will return an answer based on a combination of the heat sensor and the optical sensor. They are made for sensitivity to a large variety of fires.
Manual Call Points
manual call Point (also known as the Break Glass The Call Point is a gadget that allows users to signal alert by breaking the frangible component on the fascia. This will trigger the alarm.