Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
lUo.351-12ULTRASONIC DETECTOR GENERAL INFORMATION The No. 351-12 Ultrasonic emits invisible and inaudible sound waves which detect the presence of a moving object such as an intruder. The ultrasonic transmitter saturates an area with a pattern of these inaudible, high.frequency sound waves. its receiving head picks up the sound waves after they have been modified by the “imprint” or “look” of the protected area. This “look” is achieved by sound waves reflecting off walls, furniture, ,and stationary objects in the room. Any movement of objects or persons causes waves to be reflected at a changed frequency (known as the Doppler effect). the frequency of the received waves changes from the transmitted frequency, shift is detected by the electronic circuitry in the unit. This activates wired into the protective circuit of the alarm system, .FINDING other some When the a relay THE BEST LOCATION: inspect the inside premises carefully before installing. There are certain to look for, such as air currents and vibrations, which appear as motion to When determing the best location, ultrasonic detector, triggering the alarm. make certain the following are NOT present: AIR CURRENTS created heat from baseboard VIBRATIONS such windows or walls on sturdy inside by space heaters, heaters and strong as those commonly caused that shake when traffic walls. HIGH-PITCHED SOUNDS from telephone in the area to be protected. MOVING OBJECTS such as house hanging objects that tend to currents. bells air-conditioning drafts on the by loose passes. or pets or other sway, or open rad.iator vents, floor. fitting Always rising ,rl doors locate valves things the and show the unit located directly animals on the premises.. doors that can be moved Also, by air The ideal location for the No. 351-12 Ultrasonic is 1.25-2 Do not locate it from the floor, safely away from drafts. since the unit, when angled downward for maximum coverage, same floor drafts. meters (4 to too near the will confront 7 ft.) ceiling the (+I WIRING CONNECTIONS I. In any closed circuit system, cut the positive conductor Connect one end to terminal of the protective circuit. C (common) and the other to terminal N.O. (normally ope 2. Connect the I2 Volt D.C, power supply wires to terminals marked I2 V.D.C. Do not apply power until all connections are completed. OBSERVE POLARITY. 16 the 9 PATTERN AND RANGE SETTING The pattern of the ultrasonic waves emitted by the No. 351-12 is oblong. Its range is approximately 7.5 meters long and 3.5 meters wide at its widest point. The actual operating the No. 351-12 will ing to two factors: range of vary accord- SURFACE REFLECT I ON In areas surfaces mirrors, that have highly reflective are hard and.easily reflect walls and most solid surface surfaces coverage is greater because the ultrasonic waves. Glass, tile floors, areas are considered reflective surfaces. sound-absorbing material Surfaces containing soft, Examples of this kind of surface are No. 351-12. heavy plush furniture, etc. tend to carpeted reduce floors, the range draperies; of the HUMIDITY Ultrasonic waves highest humidity to have a limited are affected by atmospheric humidity. Between the lowest levels the range can actually change 2:l. Therefore, it amount of overflow protection in the area. and is wise ADJUSTING THE RANGE You can increase or ment located in the range by turning the where the pattern wi decrease the area to be protected by the sensitivity adjust; rear of the unit. In a highly reflective room, reduce the adjustment counter-clockwise. In a highly-absorbent location I I be sma I ler, turn the adjustment clockwise to i’ncrease the range. As a genera I rule, protecting minimum: open space. MULTIPLE it is always best strategic areas the No. 351-12 to or large sections a of INSTALLATION Keeping in mind considerations other factors, the installation Any number interfering fol lowed. to keep the range of and not entire rooms of surface reflections, may be laid out. humidity, location of No. 351-12 ultrasonics may be placed in the same area without, with each other, as long as certain basic rules of positioning A number of suggested p.atterns are shown as follows: and are SUGGESTED INSTALLATIONS POOR INSTALLATIONS Note that for best results, the units should not be directed at each other unless the distance between them exceeds I8 meters, The units can be placed on opposite walls with at least 3.5 meters of space from center to center. Placement in adjacent corners is effective,, too. However, donrt place the units too close together, as some range shortening can occur. SETTING AND TESTING The area should be cleared some business establishments after hours. of all people during the test. it may be more convenient to We suggest set up the that in No. 351 -12 I. Every time the No. 351-12 Ultrasonic tri’ggers, the lamp on the unit will light. When there is no motion in the room (including the test light should be OFF. 2. During area. 3. Conduct points. NOTE : the test be alert.to any a walk test by walking You can determine the into the range of noise protected protection or vibration in the area at several different by observing the light. TO CONDUCT A PROPER WALK TEST, ALWAYS WALK DIRECTLY TOWARD OR AWAY FROM THE UNIT, AND NEVER ACROSS IT. The unit has built-in delay that your movement to go undetected. tests. 4. high-pitched face of the your own), allows the first one or two steps Bear this in mind when conducting Remember you can control the range of protection by adjusting the C I ock-w i se to i ncrease sensitivity adjustment in back of the unit. Counter clock-wise to decrease the range. Once the the range. screw in the hinged terminal cover, sensitivity control is set, 18 of walk :p1 UNDFRSTANDING THE TURBULENCE WARNING SYSTEM On the No. 351-12 the “turbulence warning system” serves to check the level of air turbulence in a room throughout the day, maki’ng certain it is below the wi’ll prevent the setting of the main control danger I eve I . The “warn tng system” The walk test lamp will stay Ii’t to warn of this if the turbulence is too high., Once the allowing the customer to spot a potential false alarm. condition, turbulence is reduced, the lamp will qo out and the customer can set the alarm on The “turbu le&e warning system”. now has no effect system for the evening. the operation of the unit. In the event should check the sensitivity that excessive the premises adjustment the customer turbulence has forced the unit to trip, If none can be located, for signs of new turbulence. on the.No. 351-12 will have to be reset. WHAT TO ADVISE THE CUSTOMER If is important to working condition. inform relocate the the customer how he may maintain I. Never 2. Never change the physical surroundings furniture is moved or air-conditioning to be read justed ’ 3. It should Never turn the No. 351-12 OFF. alarm will be transmitted when the control unit is ever turned OFF while the system dition will result. the system unit, of the protected installed, the If area. system may have operate 24 hours a day. No If the instrument is OFF. is ON, an immediate alarm con- 4B SPECIFICATIONS: Voltage: Current Drain: Frequency: Dimensions: Weight (net) : Optional Equipment: I2 Volts D.C. 80MA 40 KHZ 24lMM x 127MM x 51MM (9 (3 l/4 Ibs.) 1.5 kg. No. No. in proper 353 Bracket for 352 “Wood Grain” 19 l/2” x 5” x 2”) Wall Mounting Case (Recommended) TROUBLESHOOTING TROUBLE: I. 351&35142 Nos. WALK TEST LIGHT DOES NOT OPERATE, BUT RELAY CLICKS. PROBABLE CAUSE A .. System battery. 8. TROUBLE: operating Wa I k test from LED burned REMEDY standby A. Check the voltage output of the plugin transformer and the voltage input at the ultrasonic unit for I2 volts A.C. out. B. LED must be replaced. 2. AREA OF COVERAGE CHANGES. A. Customer ture or has repositioned furniequipment in premises. A. Caution customer that changes in I ayout can affect coverage. Read j us-t or relocate Ultrasonic. B. Substantial change in the temperature and humidity in p.rotected area . TROUBLE : 3. B. Increase or decrease the sensitivity adjustment accord i ng to the change that has taken place. UNIT GOES INTO ALARM FOR NO APPARENT REASON. PROBABLE CAUSE A. Drafts creating m- TROUBLE: or REMEDY air turbulence are the alarm condition. B. Birds or small animals are entering building (especially warehouses). B. Check entry etc. C; Unit(s) 24-hour C. Make certain plugged into at all times. 4. not plugged outlet. into a SOME REMOTE CONTROL TELEVISIONS OF A NO. 351. 1r-l A. Check for air ducts and sources of drafts that may have been missed during the initial installation. See “Understanding the Turbulence Warning System”. for and eliminate points for cats, BEHAVE ERRATICALLY all possible dogs, birds, all ultrasonics outlets that are are live AFTER THE INSTALLATION REMEDY PROBABLE CAUSE The 351 can be switched off while the TV is in use, with the built in ON-OFF switch. Note that when the unit is off, the protective circuit relay is open. The system cannot be armed until the 351 is turned ON. If the ON/OFF portion of the TV remote control is responding to the ultrasonic signals, then it is possible that with the 351 ON and transmitting, the TV No. 351 operates on similar frequency as some remote control televisions. 20 /1 I set may be turned on without warning. In such a case, the unit must be reaimed or relocated. TROUBLE: 5. UNIT IS NOT OPERATING (NO. 351-12 ONLY). PROBABLE CAUSE Unit is not receiving REMEDY power. Check input Nos.352&353 WOOD GRAIN CABINET AND The No. 352 “Wood Grain” Cabinet is No. 351 Ultrasonic Motion Detector. 2. Gently slide the ultrasonic The bottom of the cabinet 3. A slight increase in the sensitivity of the unit will Adjust the sensitivity control by.turning necessary. for this purpose located in the back of the ultrasonic Screw in the hinged back plate. 4. Place the back cover in position so that all wiring passes the opening located on the bottom left portion of the back 5. Using two small wood screws found with Starter holes are located back cover. cabinet for the wood screws. No. 353 Adjustable the the No. 350 or built to house either To use the “wood gra i n” cabinet: Complete all hinged plate the to ultrasonic unit. Leave the unit head first into the will have four screw holes. Mounting the cabinet, on opposite 12 volts BRACKET I. Installing wiring open. for presence of at rear of unit. the back cabinet. now be the screw unit. through cover, secure the sides of the Bracket: Four evenly spaced holes on the bottom of the “wood grain” cabinet are used to mount the No. 353 Adjustable Mounting Bracket, These holes are fitted with metal threads and are designed to accept the two metal screws found with the Bracket. The four holes are located on a straight line to permit mounting the bracket in and-far right three different positions on the cabinet: far left, center ing posftions. Your selection will depend on the desired locat ion and position of the No. 352 “Wood Grain” Cabinet. 21 D.C.