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高低温交变试验箱试验温度均匀度影响因素

文章出处:http://zhengannh.com/ 责任编辑:林频仪器 发表时间:2018-05-17 11:30【

  什么是温度均匀度?高低温交变试验箱在稳定状态下,工作空间在某一瞬间时任意两点之间温度的最大差值。计算方法:稳定状态下,工作空间各测量点在30min内(每1min测量一次)每次测量中实测最高温度与最低温度之差的算术平均值。

上海林频LRHS-800B-LJ高低温交变试验箱

  ZHUYAOYINGXIANGGAODIWENJIAOBIANSHIYANXIANGWENDUJUNYUNDUDEYINSUYOURUXIA6DIAN:

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  6、样品和箱体体积的比例及摆放的合理性:如果样品体积过大,或者样品放置在试验箱内的位置或者方式不合理,使舱内的空气对流受阻,也会影响温度均匀度,比如将样品放在风道旁边或者某一侧的内壁时,严重影响测试舱内风的循环等;按照GB2423.3-2006的要求,对于散热样品的测试:试验箱的容积至少是散热样品体积的5倍。

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