高低温冲击试验箱温度变换时间检测方法

Test method of temperature change time for thermal shock chamber

温度变换时间是评估高低温冲击试验箱温度骤变能力的重要指标,而目前相关的计量技术法规并未对该参数进行讨论,导致对该参数的检测经常被忽略。鉴于企业对该检测项目的需求,该文首先对高低温冲击试验和温度变换时间进行介绍和重要性分析,并设计基于数据采集器的检测方法,减小传统人工计时方法的误差。最后,用试验证明该方法的有效性和可靠性。

Temperature change time,which is usually ignored in periodical inspection,is a key index to evaluate the thermal shock capability of a thermal shock chamber.To meet the needs for tests of this parameter,an introduction and analysis about thermal shock test and temperature change time is included.Also,a test method for this parameter based on data acquisition device,which reduces the error of traditional one,is proposed.An experiment proves the effectiveness and reliability of this approach.