ISO 5660-1-2015 pdf free download

ISO 5660-1-2015 pdf free download.Reaction-to-fire tests Heat release, smoke production and mass loss rate
Part 1:Heat release rate (cone calorimeter method) and smoke production rate (dynamic measurement)
Essais de reaction aufeu — Debit calorifique, taux de dégagement de fit inée et taux de perte de masse — Partie 1: Debit calorifique (méthode au calorimètre a cone) et taux de dégagement defumée (mesurage dynamique).
of the weighing device shall not drift by more than 1 g over a 30 mm period, as determined with the calibration described in Clause 10.1.4.
6.6 Specimen holder
The specimen holder is shown in Figure 3. The specimen holder shall have the shape of a square pan with an opening of (106 ± 1) mm x (106 ± 1) mm at the top, and a depth of(25 ± 1) mm. The holder shall be constructed of stainless steel with a thickness of(2,4 ±0,15) mm. It shall include a handle to facilitate insertion and removal, and a mechanism to ensure central location of the specimen under the heater and proper alignment with the weighing device. The bottom of the holder shall be lined with a layer of low density (nominal density 65 kg rn-3) ceramic fibre blanket with a thickness of at least 13 mm, The distance between the bottom surface of the cone heater and the top of the specimen shall be adjusted to be (25 ± 1) mm, except for dimensionally unstable materials for which the distance shall be (60 ± 1) mm (see Clause 7.5).
6.7 Retainer frame
The frame shall be constructed olstainless steel with a thickness of (1,9 ± 0,1) mm in the shape of a box with an inside dimension of each side (111 ± 1) mm and a height of (54 ± 1) mm. The opening for the specimen face shall be (94,0 ± 0,5) mm square as shown in Figure 4. The retainer frame shall have an appropriate means to secure it to the specimen holder with a specimen in position.
6.8 Exhaust gas system with flow measuring instrumentation
The exhaust gas system shall consist of a centrifugal exhaust fan rated for the operating temperatures, a hood, intake and exhaust ducts for the fan, and an orifice plate flow meter (see Figure 5). The distance between the bottom of the hood and the specimen surface shall be (210 ± 50mm). The exhaust system shall be capable of developing flows up to 0,035 m3 s1, under standard conditions of temperature and pressure. The recommended location of the fan is indicated in Eigure.5. As an alternative, it is acceptable to locate the fan further downstream and to have the measuring orifice before the fan, provided that the requirements described in the remainder of this clause are fulfilled.
A restrictive orifice with an internal diameter of (57 ± 3) mm shall be located between the hood and the duct to promote mixing.
A gas sampling ring probe shall be located in the fan intake duct for gas sampling, (685 ± 15) mm from the hood (see Figure 5). The gas sampling ring probe shall contain 12 small holes with a diameter of (2,2 ± 0,1) mm, to average the stream composition, with the holes facing away from the flow to avoid clogging with soot.
The temperature of the gas stream shall be measured using a 1,0 mm to 1,6 mm outside diameter sheathed-junction thermocouple or a 3 mm outside diameter exposed-junction thermocouple positioned in the exhaust stack on the centreline and (100 ± 5) mm upstream from the measuring orifice plate.ISO 5660-1-2015 pdf free download.