Alarms

Newcastle Fire Alarms: Importance of Early Fire Detection

As the risk of fire is always there, early fire detection is very important to reduce the possible damages that may occur. Hence, a smoke alarm is needed to provide early warning and time to escape.

Newcastle Fire is a trusted provider of smoke alarms and compliant with Australian Standard 3786. We ensure the safety and integrity of our customers’ systems. We are fully competent to deliver the level of services required. Newcastle Fire installs fire alarm and detection systems that range from simple cost-efficient manual systems through to large automated commercial or industrial solutions.

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Must Knows

A mains powered smoke alarm is one that is wired directly to a 240 volt AC power supply or to a 12/24 volt DC system powered by a 240 volt supply. Please note that all mains powered smoke alarms must be installed by a registered electrician, and must be compliant with Australian Standard 3786 and carry the Australian Standards or the ActivFire labels.

Interconnectable alarms are very useful in larger homes where it may be difficult to hear smoke alarms from both ends or on another level of the house. It can be set up in a network where there is a chain alarm. If one smoke alarm is activated, the rest of smoke alarms on the same network will also activate.

Isolator buttons are also included in some more advanced networks. Pressing the isolator button will switch off all the alarms except for the one that initially activated the alert.

Types of Smoke Alarms

Newcastle Fire offers the following types of alarms:

  • Ionisation Alarms
  • Photo-electric or Optical Alarm

There are two main types of smoke alarms; ionisation and photo-electric. Each alarm performs differently.

Photoelectric alarms are the best type for early detection of smouldering fires. They are also fast enough at detecting flaming fires and consistently provide sufficient time for occupants to escape, provided the alarms are installed and maintained properly and occupants hear them.

Photo-electric smoke alarms consist of a light emitting diode and a light sensitive sensor in the sensing chamber. The light beam is scattered through the presence of suspended smoke particles in the chamber. This scattered light beam is then detected and sets off the alarm.

Ionisation alarms are based on the measurement level of small particles typically given off in a fast-flaming fire. They use a small amount of radioactive material to ionise the air in the sensing chamber.

In effect, the air chamber becomes conductive, allowing current to flow between two charged electrodes. The conductivity of the chamber air decreases when smoke particles enter the chamber. When conductivity is reduced to a predetermined level, the alarm is set off.

If you’re looking for smoke alarms for your home or facilities, Newcastle Fire is your better option.