发明名称 |
Multiple process product interface detection for a low power radar level transmitter |
摘要 |
Disclosed is a low power time domain reflectometry radar (LPTDRR) level transmitter for calculating levels of first and second products in a tank. A termination extends into the first and second products in the tank. A pulse generator transmits a pulse along the termination into the first and second products. A pulse receiver receives first and second reflected wave pulses corresponding to reflection of a first portion of the transmit pulse at a first product interface and reflection of a second portion of the transmit pulse at a second product interface, respectively. A threshold controller generates a first threshold for detection of the first reflected wave pulse and a second threshold for detection of the second reflected wave pulse. A dielectric constant calculator determines a dielectric constant of the first product as a function of the first reflected wave pulse. A level computer calculates levels of the first and second products.
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申请公布号 |
US6198424(B1) |
申请公布日期 |
2001.03.06 |
申请号 |
US19990234999 |
申请日期 |
1999.01.21 |
申请人 |
ROSEMOUNT INC. |
发明人 |
DIEDE KURT C.;RICHTER BRIAN E. |
分类号 |
G01F23/284;G01S7/41;G01S13/08;G01S13/88;G08C19/02;(IPC1-7):G01S13/88;G01R27/04 |
主分类号 |
G01F23/284 |
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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