How does a aspirating smoke detector work?

How does a aspirating smoke detector work?

Aspirating detection systems work by catching the smallest indication of fire at the pre-combustion stage before there is any visible evidence of smoke or flames. In most cases aspirating smoke detectors require a fan unit to draw in a sample of air from the protected area through its network of pipes.

What is aspirating pipe?

Aspirating smoke detectors use discrete sampling pipes with multiple holes and a fan unit to draw air through the pipes from the protected area. As this happens the air is filtered, removing any contaminants or dust to avoid false alarms, before it is processed by the highly sensitive detection unit.

What is aspiration system?

An aspiration detection system is a highly sensitive form of fire detection that can detect a fire at an early stage. The system takes samples of the air and tests them for the presence of smoke. The air is drawn by a pump from the various test points.

How do beam smoke detectors work?

Beam smoke detectors operate on the principle of obscuration. As a smoke field develops, the detector senses the cumulative obscuration – the per- centage of light blockage created by a combination of smoke density and the linear distance of the smoke field across the projected light beam.

What is VESDA panel?

VESDA Systems are aspirating smoke detection used for early warning applications where response to a fire is critical. The VESDA detectors are able to communicate this information to a fire alarm control panel, a software management system or a building management system via relays or a High Level Interface (HLI).

What is duct smoke detector?

A duct smoke detector is a device or group of devices used to detect the presence of smoke in the airstream of ductwork sections of the HVAC air handling systems typically used in commercial buildings.

What type of systems are best for air sampling smoke detectors used for?

Air sampling detectors are chosen most often for the following applications: Very Early Warning Fire Detection installed at the ceiling level of rooms containing information technology or telecommunications equipment. Smoke detection at air handling return grilles. Freezer warehouses and other cold rooms.

What is FM200 system?

FM200 is a synthetic/chemical fire suppression gas and extinguishes a fire by removing the free radicals or heat elements from the fire triangle. (Oxygen, Heat and Fuel). The typical concentration of an FM200 system is normally between 7.9% to 8.5%.

What is aspirating smoke detection?

Aspirating Smoke Detection An Aspirating Smoke Detection (ASD) System utilises an aspirator (fan) to actively draw air into a remote detector, through a sampling pipe network that extends into a protected space. This method of smoke/fire detection is sometimes referred to as Air Sampling Smoke Detection.

How does a smoke detection system work?

The airflow is then analysed for smoke particles and an alarm is raised if smoke is present. The system is active, continually pulling air samples from the risk. The sampling holes in the monitored area are arranged so that the same amount of air is drawn through each hole.

What is fafaast fire alarm aspiration sensing technology™?

FAAST Fire Alarm Aspiration Sensing Technology™ is a new generation of smoke detectors from Honeywell, which uses advanced technologies and software to deliver the earliest and most accurate smoke detection.

What is high sensitivity smoke detection (hssd)?

Again design mimics that of conventional detection, however the use of High Sensitivity Smoke Detection (HSSD) systems are encouraged and in some cases demanded. The maximum coverage of an ASD system is determined by the number of point-type detectors than can be replaced by an ASD device.