1、BRITISH STANDARD BS 4737-3.13: 1978 Reprinted, incorporating Amendment No. 1 Specification for Intruder alarm systems in buildings Part 3: Requirements for detection devices Section 3.13 Capacitive proximity detectors UDC 696.6:654.924.3:621.3.013.72BS4737-3.13:1978 This British Standard, having bee
2、n prepared under the direction of the Electronic Equipment Standards Committee, was published under the authority of the Executive Board on 29 December 1978 BSI 12-1998 First published April 1971 First revision December 1978 The following BSI references relate to the work on this standard: Committee
3、 reference EEL/27 Draft for comment 74/25543 DC ISBN 0 580 10366 8 Cooperating organizations The Electronic Equipment Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government department and scientific and industrial orga
4、nizations: British Broadcasting Corporation British Electrical and Allied Manufacturers Association British Radio Equipment Manufacturers Association Cable Television Association of Great Britain Department of Prices and Consumer Protection Electrical, Electronic, Telecommunication and Plumbing Unio
5、n Electricity Supply Industry in England and Wales Electronic Components Board Electronic Engineering Association* Engineering Equipment Users Association Institution of Electronic and Radio Engineers Post Office* Radio and Electronic Component Manufacturers Federation Scientific Instrument Manufact
6、urers Association The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: Association of Burglary Insurance Surveyors Association of Chief Police Officers British Ins
7、urance Association British Railways Board British Security Industry Association Department of the Environment Home Office Independent Burglar Alarm Association Lloyds Syndicates Survey Department Metropolitan Police Ministry of Defence National Supervisory Council for Intruder Alarms Telecommunicati
8、on Engineering and Manufacturing Association The Committee of London Clearing Bankers on behalf of the Committee of Scottish Clearing Bankers, Co-operative Bank, Central Trustee Savings Bank and Yorkshire Bank Amendments issued since publication Amd. No. Date of issue Comments 3257 March 1980 Indica
9、ted by a sideline in the marginBS4737-3.12:1978 BSI 12-1998 i Contents Page Cooperating organizations Inside front cover Foreword ii 1 Scope 1 2 References 1 3 Definition 1 4 Area of coverage 1 5 Test period 1 6 Power supply 1 7 Environment 1 8 Interference 1 9 Housing 1 10 Marking 1 Publications re
10、ferred to Inside back coverBS4737-3.12:1978 ii BSI 12-1998 Foreword This revision of BS4737 has been prepared under the direction of the Electronic Equipment Standards Committee to reflect the technical advances in the industry since the publication of the 1971 edition. It takes account of Amendment
11、 No. 1,1972 (AMD1064) and of Amendment No.2,1973 (AMD1218). It is being published in a number of separate Sections, as follows. Part 1: Requirements for systems with audible signalling only; Section 1.1: Installation; Section 1.2: Maintenance and records; Part 2: Requirements for systems with remote
12、 signalling; Section 2.1: Installation; Section 2.2: Maintenance and records; Part 3: Requirements for detection devices, consisting of a number of separate (Sections 3.1to3.14). The specifications for detection devices (including this SectionofBS4737) are to be read in conjunction with Section1.1 o
13、r Section2.1, as appropriate. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of
14、pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cove
15、r.BS4737-3.13:1978 BSI 12-1998 1 1 Scope This British Standard specifies the general requirements for capacitive proximity detectors to be used in intruder alarm systems in buildings. 2 References The titles of the standards publications referred to in this standard are listed on the inside back cov
16、er. 3 Definition For the purposes of this British Standard, the following definition applies in addition to those given in BS4737-1.1 and/or BS4737-2.1. capacitive proximity detector a detection device designed to generate an alarm condition in response to the change (or rate of change) in capacitan
17、ce resulting from the proximity of a person to the protected object 4 Area of coverage 4.1 The device is intended to detect proximity but, as this is a condition difficult to define for the purposes of a test, the test for area of coverage is based on touch by a person. 4.2 The area of coverage is t
18、hat area of the surface of a protected object within which, when touched by a person, the detector generates an alarm condition or signals to a processing device. The installer shall identify the area of coverage in the equipment record (see 7.1 of BS 4737-2.2:1977). NOTEIt should be recognized that
19、 the device may generate an alarm condition when a person approaches closely, but does not actually touch the protected object. 4.3 A method of indication shall be provided to enable the subscriber to check the area of coverage before the system is closed. 5 Test period Except when immediate connect
20、ion is needed for urgent security reasons, or when the detector replaces a similar existing unit, the detector shall not be connected to an alarm system which is extended to the police until the detector has operated in the installation for at least 7 days without generating an unwanted alarm. 6 Pow
21、er supply An alarm condition shall be generated if the voltage of the power supply to the detector is reduced sufficiently to impair the performance of the detector. 7 Environment The requirements of this British Standard shall be met by the detector under any combination of the following environmen
22、tal conditions. 8 Interference The detector shall be adequately protected against any externally-generated radio-frequency interference and/or mains-borne interference which may normally be expected to occur within the working environment. 9 Housing The detector (except the senior itself) and any pr
23、ocessing device shall be housed in one or more containers. It shall not be possible to open the container(s) by the normal means of access without operating an anti-tamper device. If the equipment is housed in separate containers, the interconnection(s) shall be electrically protected. Any means for
24、 adjusting the equipment shall be enclosed within the container(s). 10 Marking Text deleted Temperature: 0 C to 40 C Relative humidity: 10 % to 90 %2 blankBS4737-3.13:1978 BSI 12-1998 Publications referred to BS 4737, Specification for intruder alarm systems in buildings. BS 4737-1, Requirements for
25、 systems with audible signalling only. BS 4737-1.1, Installation. BS 4737-1.2, Maintenance and records 1) . BS 4737-2, Requirements for systems with remote signalling. BS 4737-2.1, Installation. BS 4737-2.2, Maintenance and records. BS 4737-3, Requirements for detection devices 1) . BS 4737-3.1, Con
26、tinuous wiring. BS 4737-3.2, Foil on glass. BS 4737-3.3, Protective switches. BS 4737-3.4, Radiowave Doppler detectors. BS 4737-3.5, Ultrasonic movement detectors. BS 4737-3.6, Acoustic detectors. BS 4737-3.7, Passive infra-red detectors. BS 4737-3.8, Volumetric capacitive detectors. BS 4737-3.9, Pr
27、essure mats. BS 4737-3.10, Vibration detectors. BS 4737-3.11, Rigid printed-circuit wiring. BS 4737-3.12, Beam interruption detectors. BS 4737-3.14, Deliberately-operated devices. 1) Referred to in the foreword only.BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | |
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