The unit enables smoke detectors to be sited within ventilation extract ducts in order to assist in the prevention of the spread of smoke by the ventilation system (as required by building regulations) and in addition to form part of the fire alarm system.
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This detector is classified according to EN54-5 as a Fixed Heat Detector and is designated 'S' type accordingly. Static heat detectors will respond only when the alarm threshold is reached. ORB-HT-11166 AMP
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This detector is classified according to EN54-5 as a Rate-of- Rise Heat Detector and is designated 'R' type accordingly. Rate-of-rise detectors have a fixed upper limit, but also measure the rate of increase in temperature. ORB-HT-11017 AMP
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This detector is classified according to EN54-5 as a Fixed Heat Detector and is designated 'S' type accordingly. Static heat detectors will respond only when the alarm threshold is reached. ORB-HT-11006 AMP
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The TimeSaver Base® has a large open working area and single quadrant terminals, two fixing centres, a guide on the base interior to indicate the length of cable to be stripped and E-Z Fit slots to make fitting to a BESA box easier.
There is also a continuity link that enables voltage testing of zone wiring prior to commissioning. The link is automatically broken when the detector is first inserted.
The base also has a locking mechanism so that if detectors need to be locked in, a marked part of the base is simply cut out to make it a locking
ORB-MB-00004 AMP
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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. 55000-500 AMP
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The XP95 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. 55000-600 AMP
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