MULTISENSOR DETECTOR
In addition to simple-sensor smoke and heat detectors, we offer a highly useful combined detector - the Multisensor detector.
The multisensor detector can be connected to any system and entails little or no change to the control panel configuration.
Two very important benefits result from the availability of the multisensor:
the multisensor can be fitted where local specifications call for its use; and
the multisensor can be fitted in place of ionisation detectors where these prove to be too sensitive and might cause unwanted alarms
Features
This detector combines inputs from optical and heat sensors and processes them using a sophisticated algorithm.
When polled by the control panel it returns an analogue count which is determined by combined responses from both optical and heat sensors.
The Multisensor detector is designed to be sensitive to a wide range of fires and may be used in place of an ionisation detector in many instances.
Operating Principles
Signals from the optical smoke chamber and temperature sensor are independent, and represent the smoke level and air temperature respectively in the vicinity of the detector; the detector's micro-controller processes both signals. The temperature signal processing extracts only rate of rise information for combination with the smoke signal. The detector will not respond to slow increases in temperature but a large sudden change can cause an alarm without presence of smoke, if sustained for 20 seconds. The processing algorithms in the multisensor incorporate drift compensation.
