AS 7240.15:2018 pdf free
AS 7240.15:2018 pdf free.Fire detection and alarm systems
Mount the specimen by its normal means of attachment in accordance with the manufacturer’s instructions. If these instructions describe more than one method of mounting, then the method considered to be most unfavourable for each test shall be chosen.
If a test method requires a specimen to be operational, then connect the specimen to suitable supply and monitoring equipment having the characteristics required by the manufacturer’s data. Unless otherwise specified in the test method, set the supply parameters applied to the specimen within the manufacturer’s specified range(s) and maintain them substantially constant throughout the tests. The value chosen for each parameter shall normally be the nominal value, or the mean of the specified range.
If a test procedure requires a specimen to be monitored to detect any alarm or fault signals, then connect the specimen to any necessary ancillary devices (e.g. through wiring to an end-of-line device for non-addressable detectors) to allow a fault signal to be recognized.
Install the specimen for which the heat-response value is to be measured in a heat tunnel, as specified in Annex C, in its normal operating position, by its normal means of attachment. The orientation of the specimen, relative to the direction of air flow, shall be the least sensitive one as determined in the directional dependence of heat response test (5.4), unless otherwise specified in the test procedure.
Raise the air temperature until the heat sensor produces a signal (this might be a fire signal), as specified by the manufacturer. The rate of rise of the air temperature and the associated tolerances shall correspond to one of the values, except for 0,2 K/min, 1 K/min and 30 K/min, as specified in ISO 7240-5.The choice of the rate within the range of 3 K/min to 20 K/min shall be specified by the manufacturer.
For this purposes of this test, the manufacturer can supply specimens with special outputs or specially modified software to indicate when the air temperature has caused an internal threshold to be reached. However, it is essential that the output signal be routed through the amplification path of the detector.AS 7240.15 pdf free download.
