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UL1598燈具環境溫度測試筒是根據UL1598 9.5.3節及IEC60598-1附錄K.1標準要求設計而成

根據UL1598要求：

19.5.3 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.

根據IEC60598附錄K要求：

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.