SMOKE DETECTION Detection and Ancillaries Range |
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Ionisation Smoke Detector Air in the dual sensing chambers is irradiated to produce ions that travel to the positive and negative electrodes, creating a current flow. As smoke enters the outer chamber, the flow drops and voltage increases. The voltage is measured and an analogue signal is converted to digital for transmission to the control equipment. |
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Optical Smoke Detector The optical detector uses an internal pulsing LED and a photo-diode at an obtuse angle. In the event of smoke entering the chamber, the light pulse from the LED will be scattered and registered by the photo-diode. A signal is generated and transmitted digitally to the control equipment. |
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Heat Detector The heat detector has a low air-flow resistant case for good contact between the sensing thermistor and the surrounding air. Temperature is measured by a single thermistor network which gives a voltage output proportional to the external air temperature. The signal is processed and transmitted to the control equipment. |
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Multisensor Detector The multisensor detector contains an optical smoke sensor and a thermistor temperature sensor whose outputs are combined to give the final analogue value. More information |
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Beam Detector The beam detector comprises three parts: a transmitter, a receiver and an interface. More information. |
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Flame Detector The flame detector is sensitive to low-frequency, flickering infra-red radiation emitted by flames during combustion. It is designed for use in large areas that require a detector to give a fast response in potentially dusty or highly flammable environments. More information. |
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Manual Call Point Each Merrion Fire + Safety Call point is available for surface or flush mounting and can be supplied addressable or conventional. When operated, the manual call point interrupts the polling cycle and can report its address in under 0.2 seconds ensuring of an effective evacuation. |
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Sounders The range represents the most modern acoustic and aesthically pleasing sounders available on the market today. There is various sounders which incorporates different frequencies; low, high and all industry standard frequency patterns. There is also sounder/strobes available to suit all applications. More information |
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Interfaces A variety if interfaces for addressable systems are available to suit individual applications and each unit can be designed to be surface or flush mounted to walls etc.. A neat solution to monitor, switch or isolate. More information |
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Door Retainers The Merrion Fire + Safety range of door retainers offers any fire system the broadest choice of mounting styles holding power and installation accessories. Mounted on a fixed surface, these door retainers ensure retention of the door by means of a smart metallic keeper plate, when the fire alarm is activated, the door retainers are de-energised thus releasing the doors without a potentially harmful delay. |
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