发明名称 |
Calibrating particle emission-detecting instruments |
摘要 |
In the calibration of a dust concentration measuring instrument at very low dust in gas concentration levels dust is introduced at a known and uniform rate into a gas stream and the instrument is caused to provide a detected concentration value.
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申请公布号 |
US5604295(A) |
申请公布日期 |
1997.02.18 |
申请号 |
US19960625523 |
申请日期 |
1996.03.27 |
申请人 |
BRITISH-AMERICAN TOBACCO COMPANY LIMITED |
发明人 |
ROBINSON, DAVID P. |
分类号 |
G01N15/06;(IPC1-7):G01N17/00 |
主分类号 |
G01N15/06 |
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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