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Help CenterUL1598 Clause 19.5.3 、IEC60598 Annex K1 Ambient Temperature Measurement Cylinder
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UL1598 Clause 19.5.3 、IEC60598 Annex K1 Ambient Temperature Measurement Cylinder
Tests shall be conducted in an ambient temperature 25±5℃. Ambient temperature variations above or below 25℃ shall be respectively subtracted from or added to temperatures recorded at points on the luminaire.
A thermocouple intended to measure ambient temperature shall be immersed in 15 ml(0.5 oz) of mineral oil in a glass container or attached to a metal mass of
approximately 30 g (1 oz)that is within a cylindrical metal shield open at the top and bottom.
The average ambient temperature in the draught-proof enclosure is taken to be the air temperature at a position near one of the perforated walls on a level with the centre of the luminaire.
The temperature is usually measured by a thermocouple soldered to a metal mass of approximately 30 g shielded against radiation by a double-walled cylinder of polished metal open at the top and bottom.
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