JPS5648519A - Level measuring device - Google Patents

Level measuring device

Info

Publication number
JPS5648519A
JPS5648519A JP12506679A JP12506679A JPS5648519A JP S5648519 A JPS5648519 A JP S5648519A JP 12506679 A JP12506679 A JP 12506679A JP 12506679 A JP12506679 A JP 12506679A JP S5648519 A JPS5648519 A JP S5648519A
Authority
JP
Japan
Prior art keywords
liquid
transmission line
inflection point
level
measuring device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12506679A
Other languages
Japanese (ja)
Inventor
Takeo Yamada
Takashi Kobayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP12506679A priority Critical patent/JPS5648519A/en
Publication of JPS5648519A publication Critical patent/JPS5648519A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

PURPOSE: To realize a high-accuracy measurement with no effect given from the density or other factors of the content object, by connecting the measuring electrode via the transmission line to the automatic measuring device which gives an automatic identification to the inflection point of the pulse reflecting signal at the impedance mismatching part of the transmission line.
CONSTITUTION: An automatic identification is given to the inflection point of the reflected signal of the pulse which is caused at the impedance mismatching part of the transmission line. Thus the level of the liquid or the like is measured by making use of the TDR automatic measuring device 6 which displays the impedance mismatching position through the inflection point. The lengths of the coaxial cable 5 and the measuring electrode 3 are set to L1 and L2 each, and the distance between the electrode tip and the liquid level is set to Lx respectively. Then the step pulse is applied to the coaxial cable by the device 6, and thus the Px is generated at the connector part 4 and the tip of the electrode in case no liquid is supplied. While the Px is generated at the P1 and the liquid interface in case the reflected pulses P1 and P2 are supplied. Accordingly, the reflected pulses P1 and Px are identified by setting previously the L1, L2, T1 and T2 each to the device 6. Thus the Tx is obtained and then the level Lx can be obtained from the Tx.
COPYRIGHT: (C)1981,JPO&Japio
JP12506679A 1979-09-28 1979-09-28 Level measuring device Pending JPS5648519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12506679A JPS5648519A (en) 1979-09-28 1979-09-28 Level measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12506679A JPS5648519A (en) 1979-09-28 1979-09-28 Level measuring device

Publications (1)

Publication Number Publication Date
JPS5648519A true JPS5648519A (en) 1981-05-01

Family

ID=14900967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12506679A Pending JPS5648519A (en) 1979-09-28 1979-09-28 Level measuring device

Country Status (1)

Country Link
JP (1) JPS5648519A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015094759A (en) * 2013-11-12 2015-05-18 桓達科技股▲フン▼有限公司 Measuring apparatus for detecting level of material and temperature

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015094759A (en) * 2013-11-12 2015-05-18 桓達科技股▲フン▼有限公司 Measuring apparatus for detecting level of material and temperature

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