Alarm systems. Intrusion and hold-up systems - Requirements for combined passive infrared and ultrasonic detectors1 Scope This European Standard is for combined passive infrared and ultrasonic detectors installed in buildings and provides for security grades 1 to 4 (see EN 501311), specific or non specific wired or wire free detectors, and uses environmental classes I to IV (see EN 501305). This standard does not include requirements for combined passive infra red and ultrasonic detectors intended for use outdoors. A detector shall fulfil all the requirements of

provide information concerning the content and the status of each compartment used to transfer liquid fuels from loading gantries to delivery points

For this purpose the test set-up is outlined

mechanical and physical properties of pozzolanic materials for use in combination with Portland cement class 42

It is applicable to mass concentrations of sulfur dioxide exceeding this range by carrying out an appropriate dilution of the sample solutions prior to the analysis or by using larger volumes of absorption solution

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This standard is therefore directed toward developers and users of PROW spatial data-sets in their professional work

BS EN 3506 specifies the dimensions and tolerances of hot-rolled sheets and plates in heat resisting alloys thickness is 2

Physical facility security

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BS 376-2 also gives a standard system of nomenclature and labelling of wires such that each wire can be readily identified with that shown on the circuit diagram

Manufacturers of electrical and electronic measurement equipment

Recycling industries