JPS5841321A - 磁性体検知装置 - Google Patents

磁性体検知装置

Info

Publication number
JPS5841321A
JPS5841321A JP56139744A JP13974481A JPS5841321A JP S5841321 A JPS5841321 A JP S5841321A JP 56139744 A JP56139744 A JP 56139744A JP 13974481 A JP13974481 A JP 13974481A JP S5841321 A JPS5841321 A JP S5841321A
Authority
JP
Japan
Prior art keywords
piezoelectric vibrator
oscillation
frequency
powder
circuit
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.)
Granted
Application number
JP56139744A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0119526B2 (enrdf_load_stackoverflow
Inventor
Satonori Shigihara
学徳 鴫原
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.)
EROIKA CORP KK
TDK Corp
Original Assignee
EROIKA CORP KK
TDK Corp
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 EROIKA CORP KK, TDK Corp filed Critical EROIKA CORP KK
Priority to JP56139744A priority Critical patent/JPS5841321A/ja
Publication of JPS5841321A publication Critical patent/JPS5841321A/ja
Publication of JPH0119526B2 publication Critical patent/JPH0119526B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)
JP56139744A 1981-09-07 1981-09-07 磁性体検知装置 Granted JPS5841321A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56139744A JPS5841321A (ja) 1981-09-07 1981-09-07 磁性体検知装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56139744A JPS5841321A (ja) 1981-09-07 1981-09-07 磁性体検知装置

Publications (2)

Publication Number Publication Date
JPS5841321A true JPS5841321A (ja) 1983-03-10
JPH0119526B2 JPH0119526B2 (enrdf_load_stackoverflow) 1989-04-12

Family

ID=15252361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56139744A Granted JPS5841321A (ja) 1981-09-07 1981-09-07 磁性体検知装置

Country Status (1)

Country Link
JP (1) JPS5841321A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006343338A (ja) * 2006-06-21 2006-12-21 Seiko Epson Corp 液体消費状態検出器
JP2006343337A (ja) * 2006-06-21 2006-12-21 Seiko Epson Corp 液体消費状態検出器

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006343338A (ja) * 2006-06-21 2006-12-21 Seiko Epson Corp 液体消費状態検出器
JP2006343337A (ja) * 2006-06-21 2006-12-21 Seiko Epson Corp 液体消費状態検出器

Also Published As

Publication number Publication date
JPH0119526B2 (enrdf_load_stackoverflow) 1989-04-12

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