发明名称 |
Methods and apparatus for measuring sidestream smoke |
摘要 |
Methods and apparatus for continuously and instantaneously measuring sidestream smoke are provided. A hood assembly is provided to fit over the ports of a conventional smoking machine. Sidestream smoke produced by test cigarettes is continuously drawn through the hood by an exhaust system. A laser beam is passed through the smoke one or more times before the beam is sensed by a photodiode detector. An electrical signal from the detector, representing the light transmission, is received by a strip recorder or computer system. The transmission measurements are used to calculate the extinction coefficient of the smoke for comparison purposes.
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申请公布号 |
US4980571(A) |
申请公布日期 |
1990.12.25 |
申请号 |
US19890410933 |
申请日期 |
1989.09.22 |
申请人 |
PHILIP MORRIS INCORPORATED |
发明人 |
MCRAE, DOUGLAS D.;FRANCIS, BOBBY W.;BROWN, JR., LEONARD E.;COMES, ROGER A.;GREENE, RANDALL K. |
分类号 |
G01N21/59;A24C5/34;G01N21/53 |
主分类号 |
G01N21/59 |
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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