Performance Verification of the Constant Temperature and Humidity Chamber in Textile Testing and Analysis of Door Operation Impacts
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摘要: 恒温恒湿室使用广泛,尤其是在纺织品检测领域,其温度和湿度控制是否准确,将会直接影响实验数据结果的可信程度。根据恒温恒湿室的计量特性,按照相应参数的测量方法对恒温恒湿室分层进行温度、湿度和开关门影响测量。测量结果表明,被测恒温恒湿室的计量特性正常,日常监控的温湿度计摆放在房间中心点时可以更好监测实验室的温湿度变化。开门80 s后就会造成恒温恒湿室的湿度超差,关闭门后再次稳定则需要等待2 min。实验结果对今后恒温恒湿室的期间核查及日常控制具有一定的指导意义。Abstract: Constant temperature and humidity chambers play a crucial role, predominantly in the textile testing sector. The reliability of test results hinges on the precision of the chamber's temperature and humidity controls. Based on the metrological characteristics of these chambers, a stratified approach was employed to measure temperature, humidity, and the implications of door operations. Findings reveal that the chamber's metrological attributes are satisfactory. For optimal monitoring of lab temperature and humidity fluctuations, it is recommended to position the hygrometer at the room's central point. A notable observation is that an 80-second door opening can lead to humidity excursions, necessitating a 2-minute period post-door closure to regain stability. This study provides insights that can guide periodic reviews and everyday operations of the constant temperature and humidity chambers.
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Key words:
- metrology /
- constant temperature and humidity chamber /
- textile /
- temperature /
- humidity /
- intermediate checks
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表 1 稳定状态下数据分析表
Table 1. Data analysis under stable conditions
项目 测量结果 温度上偏差 +1.0℃ 温度下偏差 0.0℃ 温度波动度 ±0.5℃ 温度均匀度 0.9℃ 湿度上偏差 +0.4%RH 湿度下偏差 −1.9%RH 湿度波动度 ±0.7%RH 湿度均匀度 1.6% RH 注:数据来源于空载状态下数据。 表 2 开门状态下数据分析表
Table 2. Data analysis during door-open conditions
状态 测量点 变化量 开门 A 2.73%RH 开门 B 0.79%RH 开门 C 1.31%RH 开门 O 1.59%RH 注:变化量=最大值-最小值。 表 3 恢复时间统计表
Table 3. Recovery time statistics
状态 参数 恢复时长 关门 温度 / 关门 湿度 2 min 注:湿度超差后温度还未超差,所以温度无恢复时间。 -
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