BS EN 50130-5:2011 pdf download – Alarm systems – Part 5: Environmental test methods the state of the specimen required during the conditioning (e.g. the configuration and operating conditions); any monitoring of the specimen and any measurements or inspections to be made during theconditioning (e.g. a functional test, where possible); any final measurements or inspections to be made after the conditioning (e.g. a functional testand a visual inspection) and any special recovery conditions required before thesemeasurements; h)the pass/fail criteria; i)the test schedule, which gives the allocation of specimens to each test. The following points should be taken into account during the drafting of the product standard makingreference to this standard: the information, a) to h) above, may differ from test to test or between types of tests (e.g. betweenOperational & Endurance tests); – for some types of equipment, it may not be possible to make the usual functional test during the conditioning of some of the tests, due to limitations imposed on the equipment (e.g. being placedinside an environmental chamber). It may therefore be necessary to conduct a reduced functionaltest or to omit the functional test during conditioning. In other tests, it is not possible to do afunctional test during conditioning, due to the transitory or changing nature of the conditioning; – the product standards should indicate whether any memory back up batteries should remain connected during endurance tests,and if so whether the memory contents should be retained. Dry heat (operational) 8.1 Object of the test The object of the test is to demonstrate the ability of the equipment to function correctly at highambient temperatures, which may occur for short periods in the anticipated service environment. 8.2Principle The test consists of exposing the specimen to the high temperature for sufficient time to allowtemperature stability to be reached, and for functional tests andior monitoring to be conducted. ‘Freeair conditions are simulated for heat dissipating specimens to allow for self heating effects. 8.3Test procedure 8.3.1 General The test apparatus and procedure shall generally be as described in EN 60068-2-2:2007. The tests with gradual changes in temperature shall be used.Test Bd shall be used for heatdissipating specimens (as defined in EN 60068-2-2) and test Bb shall be used for non heat dissipatingspecimens. The dry heat operational test may be combined with the dry heat endurance test by omitting therecovery and the functional test in between. 8.3.2 Initial measurements Before the conditioning, subject the...
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