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    • 1. 发明授权
    • Temperature indicator for refrigerated products or the like
    • 冷藏产品的温度指示器等
    • US06030118A
    • 2000-02-29
    • US973839
    • 1997-12-17
    • Norbert SchneiderGunther BettingerRonald Veitch
    • Norbert SchneiderGunther BettingerRonald Veitch
    • G01K11/12G01K11/06G01D5/12
    • G01K11/06
    • An apparatus for irreversibly indicating that the permissible temperature of stored products has been temporarily exceeded is described, in which a container has a heat-conducting connection to the product to be monitored and contains, in its interior, a medium having a melting point which is just above the permissible storage temperature, magnetizable particles being suspended in the medium. Moreover, solid magnetizable bodies are uniformly distributed in the container. After the deep-freezing process is complete, the magnetizable particles and the solid bodies are magnetized. If the permissible storage temperature is exceeded, the suspension becomes liquid and the pigments accumulate on the solid bodies, an optical indicator present on a wall of the container and visible from the outside detecting that the permissible temperature has been exceeded.
    • PCT No.PCT / EP96 / 02677 371 1997年12月17日第 102(e)1997年12月17日PCT PCT 1996年6月20日PCT公布。 公开号WO97 / 03341 日本1997年1月30日描述了一种用于不可逆转地指示存储产品的允许温度已经被临时超过的装置,其中容器具有与被监视产品的导热连接,并且在其内部包含具有 熔点高于允许的储存温度,可磁化颗粒悬浮在介质中。 此外,固体可磁化体均匀分布在容器中。 深冷过程完成后,可磁化颗粒和固体被磁化。 如果超过允许的储存温度,则悬浮液变成液体,颜料积聚在固体上,存在于容器壁上的光学指示器从外面可见,检测到超过允许的温度。