Eagle产品检测携其热门产品亮相于7月13~15日举办的Pro Pak China 2016,旨在进一步开拓中国市场,将符合大市场覆盖的产品设备更加广泛地推向受众。国家的发展使人民生活水平逐渐提高,2015年新《食品安全法》的颁布实施也标志着我国对食...Eagle产品检测携其热门产品亮相于7月13~15日举办的Pro Pak China 2016,旨在进一步开拓中国市场,将符合大市场覆盖的产品设备更加广泛地推向受众。国家的发展使人民生活水平逐渐提高,2015年新《食品安全法》的颁布实施也标志着我国对食品安全问题重视程度的加强。异物污染是威胁食品安全的问题之一,在生产线中配备合适的异物检测设备能够有效避免问题的发生,随着Eagle产品经理姚冰一起步入异物检测的世界,发现适合自身生产的设备。展开更多
1介绍
多工位测试是大多数模拟和混合信号器件生产厂家大批量测试的基石.随着并行测试工位数的提高,模拟和混合信号器件测试系统的设计人员需要不断的努力克服以前的架构的不足，架构的缺点会导致并行测试效率（PTE：Parallel Test Eff...1介绍
多工位测试是大多数模拟和混合信号器件生产厂家大批量测试的基石.随着并行测试工位数的提高,模拟和混合信号器件测试系统的设计人员需要不断的努力克服以前的架构的不足，架构的缺点会导致并行测试效率（PTE：Parallel Test Efficiency）的降低。展开更多
Diesel engine exhaust(DEE) and crystalline silica exposures occur simultaneously in the mining industry,and occupational sampling campaigns can be time-and cost-consuming. The authors evaluated a dualport system for s...Diesel engine exhaust(DEE) and crystalline silica exposures occur simultaneously in the mining industry,and occupational sampling campaigns can be time-and cost-consuming. The authors evaluated a dualport system for simultaneous sampling of DEE and crystalline silica in laboratory and field conditions.Laboratory tests evaluated the operation of pumps during 8 h sampling and the intensity of the flow variation for various filter loading conditions and for different modes of operation. Field validation was performed in an underground mine. Pumps operated in constant flow or constant pressure modes.Tests in constant flow mode showed that when the flowrate increased on one side of the system, it decreased on the opposite side according to the loading intensity. Tests in constant pressure mode showed that flowrates systematically decreased when using loaded cassettes. However, the higher the backpressure setting, the lower the flow variation was. Flow variations during field tests were generally within the acceptable ±5% range. However, significant flow variations were identified in higher concentrations. A significant negative correlation was found between flowrate variation and total carbon concentration. While the majority of tests support the use of the dual-port for evaluating concomitant exposures, results highlight the possibility of filter overloading as a cause of flowrate changes.展开更多
多工位测试是许多模拟和混合信号器件生产厂家大批量生产测试的基石.随着测试工位数的增加,模拟和混合信号测试系统设计者需要努力克服历来限制并行测试效率(PTE:Parallel Test Efficiency)的架构上的不足。在第一部分中,我们介绍了并...多工位测试是许多模拟和混合信号器件生产厂家大批量生产测试的基石.随着测试工位数的增加,模拟和混合信号测试系统设计者需要努力克服历来限制并行测试效率(PTE:Parallel Test Efficiency)的架构上的不足。在第一部分中,我们介绍了并行测试效率PTE及其随工位数增加对测试成本的影响,突出了一些效率高的多工位测试系统的重要特性。第二部分我们将介绍pattern-based测试和有关的SmartPin硬件和软件。展开更多
文摘Eagle产品检测携其热门产品亮相于7月13~15日举办的Pro Pak China 2016,旨在进一步开拓中国市场,将符合大市场覆盖的产品设备更加广泛地推向受众。国家的发展使人民生活水平逐渐提高,2015年新《食品安全法》的颁布实施也标志着我国对食品安全问题重视程度的加强。异物污染是威胁食品安全的问题之一,在生产线中配备合适的异物检测设备能够有效避免问题的发生,随着Eagle产品经理姚冰一起步入异物检测的世界,发现适合自身生产的设备。
基金financially supported by the Fonds de recherche du Québec-Nature et Technologies (No. RQT00043)
文摘Diesel engine exhaust(DEE) and crystalline silica exposures occur simultaneously in the mining industry,and occupational sampling campaigns can be time-and cost-consuming. The authors evaluated a dualport system for simultaneous sampling of DEE and crystalline silica in laboratory and field conditions.Laboratory tests evaluated the operation of pumps during 8 h sampling and the intensity of the flow variation for various filter loading conditions and for different modes of operation. Field validation was performed in an underground mine. Pumps operated in constant flow or constant pressure modes.Tests in constant flow mode showed that when the flowrate increased on one side of the system, it decreased on the opposite side according to the loading intensity. Tests in constant pressure mode showed that flowrates systematically decreased when using loaded cassettes. However, the higher the backpressure setting, the lower the flow variation was. Flow variations during field tests were generally within the acceptable ±5% range. However, significant flow variations were identified in higher concentrations. A significant negative correlation was found between flowrate variation and total carbon concentration. While the majority of tests support the use of the dual-port for evaluating concomitant exposures, results highlight the possibility of filter overloading as a cause of flowrate changes.
文摘多工位测试是许多模拟和混合信号器件生产厂家大批量生产测试的基石.随着测试工位数的增加,模拟和混合信号测试系统设计者需要努力克服历来限制并行测试效率(PTE:Parallel Test Efficiency)的架构上的不足。在第一部分中,我们介绍了并行测试效率PTE及其随工位数增加对测试成本的影响,突出了一些效率高的多工位测试系统的重要特性。第二部分我们将介绍pattern-based测试和有关的SmartPin硬件和软件。
