08-7456 - Laserfiche WebLink

Browse Search

ANSUL@ e-".... ."~'~.m'...t_.,.c,_,..~ ....... -~ '. "__'"~_n' ....., -. ~""-'."'~' ' ,: , '---- -'T ...., -: . "r--. . "-";'-~'" ....... ......,- '".".- ".,'t -j ,.' ' , , _'m ...,.. _ , '" . .- .. -~~ ~ :' :,;'_":'_),. ~';,_ "L-: ;.,1.._; __L,t:--; -,,-;:.:t-_-'LL .'_ _;_~:',,,:. :...~; ': ~-' H Detection and Control Components 1451 Ionization Smoke Detector Features . Unique dual unipolar sensor , Stable operation up to 1200 ft. per minute (6 meters per second) air velocities . Removable cover for field cleaning , Two visible LEOs "blink" in standby . Sealed against dirt, insects, and back pressure . Field metering of detector sensitivity . Field adjustable sensitivity . Buill-in test switch . Low standby current . Buill-in tamper-resistant feature . Designed for direct surface or electrical box mounting . 3600 field viewing angle of the visual alarm LEOs . Insect-resistant screening , Easy lug-in of the head to base . SEMS screws for easy wiring Applications The 1451 ionization smoke detectors are intended for use in commercial, industrial, and institutional buildings. The detec- tors are placed primarily in clean, indoor environments where early warning fire detection is required. The detectors are used in combination with an ANSUL AUTOPULSE@ Control System and an ANSUL fire suppression system for automat- ic detection, alarm, equipment control, and fire suppression system release capabilities. Description The 1451 ionization smoke detector contains a unique dual source, dual unipolar chamber detection design which will sense the presence of smoke particles produced by fast combustion as well as slow smoldering fires. Additional key features include a blinking LED standby status indicator, an easily visible alarm indication and provide for convenient field test and metering. The 1451 ionization smoke detector has two chambers: an outer sampling chamber and an inner balance chamber. Smoke or invisible combustion gases can freely penetrate the outer chamber, but the inner chamber is virtually closed to prevent easy entry. With both chambers ionized by a sin- gle radioactive source, a very small current flows in the cir- cuit. The presence of visible smoke or invisible gases have a great influence upon the current flow in the outer chamber and will cause a change in the voltage ratio between the chambers. This difference is then amplified inside the detec- tor and transmitted to the ANSUL AUTOPULSE Control System to which it is connected. The LED indicator mounted on the detector will light steadily and any remote annuncia- tors will activate at this time to indicate that the detector is in alarm. Technical Information Form A: . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0A at 30 VACIDC Form C:............... 0.6Aat 110VOC, 2.0Aat30 VOC 1.0A at 125 VAC, 2.0A at 30 VAC Stand-by Current: . ....... .. .. ....... .. .120 microamps Sensitivity: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 .9% nominal Weight:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 lb. (2n g) Size: . . . . . . . . . . . . . . . . . . . . . 3.2 in. High x 4.0 in. diameter (81 mm x 102 mm) Construction: . . . . . . . . . Flame retardant white Noryl@ plastic Temperature: . . . . . . . . . . . . . 32 OF to 120 OF (0 oC to 49 OC) Humidity Range: . . . . . . . . . . . 10-93% RH (non-condensing) Maximum Air Velocity: . . . . . . . . . . . . . . 1200 feet per minute (6 meters per second) 1451 IONIZATION SMOKE DETECTOR WITH BASE 61161N. (l56mm) 1 33116 IN. (81 mm) L 00734. 8401 BIB401 BR-7oo OPTIONAL NFPA CLASS "A" WIRING (-) (+) (+) 007350 2+06 3-20