低温温度计筛选系统设计

发布时间：2018-01-03 05:37

本文关键词：低温温度计筛选系统设计　出处：《低温与超导》2015年05期 　论文类型：期刊论文

更多相关文章： 温度计筛选 升降温循环 LabVIEW控制

【摘要】：为了筛选满足诸如长期稳定、读数精确、抗干扰等条件的温度计,需要对温度计进行冷热循环冲击实验——升降温循环实验。设计了一套利用GM制冷机作为冷源的系统,用来实现这一目的。利用Lab VIEW编程控制一台340控温仪,仪器PID自动控制加热,从而实现样品架温度按指定的速率匀速升降温。升降温循环冲击分别在循环前、第10个循环后和最后15个循环后对温度计进行标定。根据标定数据对标定后的温度计经行漂移分析,最终筛选除了漂移较小的温度计。
[Abstract]:To screen thermometers that meet conditions such as long-term stability, accurate readings, anti-jamming, and so on. It is necessary to carry out the cold and heat cycle impact test of the thermometer-the experiment of rising and cooling cycle. A system using GM refrigerator as the cold source is designed. The Lab VIEW is used to control a 340 temperature control instrument, and the instrument PID automatically controls the heating. Thus, the temperature of the sample rack will rise and cool at a specified rate, and the cycle impact of rising and cooling will be prior to the cycle respectively. The thermometers were calibrated after the tenth cycle and the last 15 cycles. According to the calibrated data, the calibrated thermometers were analyzed and the thermometers with small drift were screened.
【作者单位】：华中科技大学;中国科学院理化技术研究所;
【分类号】：TH811
【正文快照】： 1引言低温测量技术是温度计计量科学领域内的一个重要研究方向。与室温下的温度测量相比,低温系统中的要求更为严格。对于低温温度测量而言,应用最为广泛的温度传感器是电阻式温度计。为了挑选长期稳定、读数精确、抗干扰的温度计,需要对温度计进行冷热循环升降温实验,从而实

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