发明名称 |
System for accurately weighing solids and control mechanism for same |
摘要 |
A system for accurately weighing a mass of material, including a closed chamber (20) having a gas inlet (22) and a gas outlet (24). A scale (30) is disposed in the closed chamber (20). An inert gas supply, under positive pressure, is connected to the gas inlet (22) and a vacuum powered pressure regulator (100) is connected to the gas outlet (24) to maintain a predetermined pressure level within the closed chamber (20) and to substantially inhibit pressure fluctuations within the chamber (20) that may affect accuracy of the scale (30).
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申请公布号 |
US7683271(B2) |
申请公布日期 |
2010.03.23 |
申请号 |
US20060911145 |
申请日期 |
2006.03.27 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
NEWTON CHRISTOPHER WILLIAM |
分类号 |
G01G13/00;G01G21/30;G05D16/20 |
主分类号 |
G01G13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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