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物流统计 新的统计空间 被引量:7
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作者 张小洁 《北京统计》 2003年第8期7-8,共2页
关键词 物流统计工作 物流业 统计指标 中国 物流需求 物流处理量
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Biologic Waste: Consistent Performance with an Alternating Field
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作者 Hans-Jürgen Huber 《Journal of Environmental Science and Engineering(B)》 2017年第12期589-592,共4页
Biomass plants often struggle to capture flow measurements reliably. High amounts of dry solids and fats complicate the measurement with an MID (Magnetic-Inductive) flowmeter and make it susceptible to faults. To ov... Biomass plants often struggle to capture flow measurements reliably. High amounts of dry solids and fats complicate the measurement with an MID (Magnetic-Inductive) flowmeter and make it susceptible to faults. To overcome this impediment, the waste water treatment plant in Innsbruck, Austria, relies on electromagnetic pulsed AC (Alternating Current) flowmeters. Compared to pulsed DC (Direct Current) devices, AC devices are able to build up magnetic fields that are ten times stronger. Equipped with this capability, the Sitrans Transmag 2 is able to guarantee a constant and also high measuring accuracy, zero point stability and signal strength regardless of impurities in the medium or fluctuations in the magnetic field. 展开更多
关键词 Biomass wastewater treatment process instrumentation flow measurement pulsed AC meter pulsed DC meter Transmag 2.
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