How the SMART4 works; Unique, true four sensor Multi-criteria detector
Fully integrated Infra-Red sensor to support the fire alarm decision
CO gas sensing for fastest response to slow developing and smouldering fires
Highest possible immunity to unwanted alarms
Automatic drift compensation of smoke sensor and CO cell
Twin LED indicators providing 360° visibility
Wide temperature range
Built in test switch
Stable communication with high noise immunity
Notifier SMART4 White Intelligent Multi-Criteria Detector
Fires take many forms, from a slow smouldering fire that produces large amounts of smoke and Carbon Monoxide but little heat through to alcohol fires that produce high temperatures very quickly without any evidence of smoke.
The SMART4 has a sophisticated ‘brain’ capable of intelligently combining the data from the four sensing elements to provide a fast response to real fires while remaining extremely resilient to false alarm incidents. Using a combination of Carbon Monoxide, Heat, Optical smoke sensing and Infrared flame sensing elements enables SMART4 to detect the broadest range of fire conditions providing the earliest warning.
How the SMART4 works
The SMART4 is configured so that it normally operates at a high immunity level, changing to become very sensitive to fires when fire characteristics are sensed. In this way transient nuisances are monitored and ignored, reducing the false alarm rate.
SMART4 dynamically adjusts the detection profile of the device in response to the input from the sensors, enabling it to be re-characterised on the fly as the ambient conditions change. Based upon the sensor signals, sensor thresholds, sensor gain, time delays, combination, sampling rates, averaging rates are dynamically adjusted. And, if any sensor fails the sensitivity of the remaining sensors are adjusted to compensate and a fault condition is indicated.
The IR light sensor helps the detector recognise specific situations such as welding and makes adjustments rapidly in order to further reduce the potential for false alarms. The thermal detection function fuses thermistor technology with a software corrected linear temperature response. In areas where the normal daytime activities are likely to create unwanted alarms, the detector can be programmed to operate on a “Heat only” mode, automatically reverting to multi sensor operation during the unoccupied period. The SMART4 is thus able to offer exceptional false alarm immunity and excellent fire detection.
Key Features:
Unique, true four sensor Multi-criteria detector
Fully integrated Infra-Red sensor to support the fire alarm decision
CO gas sensing for fastest response to slow developing and smouldering fires
Highest possible immunity to unwanted alarms
Automatic drift compensation of smoke sensor and CO cell
Twin LED indicators providing 360° visibility
Wide temperature range
Built in test switch
Stable communication with high noise immunity
