The LE-ACA-V chamber consists of a light emitting diode (LEd) and photodiode arrangement. The chamber is designed such that light emitted by the LEd cannot normally reach the photodiode. In the event of fire, particles of smoke enter the chamber and scatter the light. As the smoke level increases, the scattering effect increases, causing more light to hit the photodiode. The chamber contains a unique design which allows smoke to enter the chamber while preventing external light from affecting the photodiode. The photodiode input level is sampled to sense smoke density. When the smoke density exceeds a preset threshold the sensor transmits an interrupt to the fire control panel indicating a fire condition. The fire alarm control panel can adjust the sensor threshold to compensate for contamination. The LE-ACA-V Heat portion incorporates a highly linear thermistor circuit, with the thermistor mounted externally. The specially designed cover protects the thermistor while allowing maximum air flow. The thermistor circuit produces a voltage proportional to temperature which is scaled, and transmitted as a digitally encoded value to the control panel. When the ambient temperature exceeds a preprogrammed threshold (fixed temperature), the sensor transmits an interrupt to the control panel indicating a fire alarm. The fire alarm control panel can adjust the sensor threshold for different Standard’s requirements. Up to 127 devices are permitted on each loop. A sensor address can be set by a hand held programming unit. The sensor mounts to an electronics free base and incorporates a locking mechanism for secure installation. The base provides mounting slots, terminals for field wiring and a third contact for a remote indicator/LEd. The sensor incorporates dual LEd’s for easy viewing of sensor status.
• Low Profile - Only 2.23” high, including base
• Simple and reliable device addressing method
• Automatic compensation for sensor contamination
• Built-in fire test feature
• Uses the noise immune digital Communication Protocol (dCP), which utilizes interrupts for fast response to fires
نرم افزار برنامه ریزی کنترل پنل سیستم اعلام حریق آدرس پذیر یونیپاس
استاندارد CE و ANSI
The Photoelectric Smoke Detector P/N 63-1024, can be used in all areas where Photoelectric Smoke Detectors are required. The wide range smoke chamber makes the 63-1024 well suited for fires ranging from smoldering to flaming fires. The 63-1028 is a non-listed version of the photoelectric smoke detector. The detector is identical to the 63-1024, except the 63-1028 does not have the magnetic test reed switch. The 4” and 6” smoke detector bases and the 63-1012, two wire auxilliary relay base may be used with the 63-1024 and 63-1028
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