JPS55119052A - Water-property sensor - Google Patents

Water-property sensor

Info

Publication number
JPS55119052A
JPS55119052A JP2742579A JP2742579A JPS55119052A JP S55119052 A JPS55119052 A JP S55119052A JP 2742579 A JP2742579 A JP 2742579A JP 2742579 A JP2742579 A JP 2742579A JP S55119052 A JPS55119052 A JP S55119052A
Authority
JP
Japan
Prior art keywords
solution
density region
fourier conversion
property
impulse
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
JP2742579A
Other languages
Japanese (ja)
Inventor
Miyuki Shigehisa
Yukio Matsuoka
Tsutomu Ichimura
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.)
Jasco Corp
Original Assignee
Japan Spectroscopic Co Ltd
Nihon Bunko Kogyo KK
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 Japan Spectroscopic Co Ltd, Nihon Bunko Kogyo KK filed Critical Japan Spectroscopic Co Ltd
Priority to JP2742579A priority Critical patent/JPS55119052A/en
Publication of JPS55119052A publication Critical patent/JPS55119052A/en
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

PURPOSE: To determine the property of water without subjecting it to frequency scanning, by detecting a pulse which has been applied to a solution to be passed through an insulating tube, and subjecting to Fourier conversion an induction voltage output obtained by the mentioned detection operation.
CONSTITUTION: A solution 4 is passed through an insulating tube 1 which is provided on its outer circumferential surface with parallel-arranged plate type excitation electrodes 2 and a detection coil 3. An impulse or a step pulse is applied to the excitation electrodes 2 and detected by the coil 3 to obtain an induction voltage output. This output is then subjected to Fourier conversion in a data processing section 9 consisting of a preamplifier 6, a primary amplifier 7 and a Fourier conversion unit 8, so as to be divided into frequency components (including resonance frequency). The permittivity of the solution is determined in a low density region thereof, and the conductivity in a high density region. Both the permitivity and conductivity are determined in an intermediate density region. The property of the solution is then evaluated. The pulses in use mentioned above are an impulse far shorter than the reciprocal of the resonance frequency, or a step pulse which rises extremely rapidly.
COPYRIGHT: (C)1980,JPO&Japio
JP2742579A 1979-03-09 1979-03-09 Water-property sensor Pending JPS55119052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2742579A JPS55119052A (en) 1979-03-09 1979-03-09 Water-property sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2742579A JPS55119052A (en) 1979-03-09 1979-03-09 Water-property sensor

Publications (1)

Publication Number Publication Date
JPS55119052A true JPS55119052A (en) 1980-09-12

Family

ID=12220747

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2742579A Pending JPS55119052A (en) 1979-03-09 1979-03-09 Water-property sensor

Country Status (1)

Country Link
JP (1) JPS55119052A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57146141A (en) * 1981-03-04 1982-09-09 Kenseishiya:Kk Air bubble detector
JPS58103362U (en) * 1981-12-30 1983-07-14 株式会社工技研究所 Non-contact water quality meter
JPS5983045A (en) * 1982-09-28 1984-05-14 ソシエタ・アノニム・デイト：フアルムカ・ラボラトワ−ル Detector for ion concentration in liquid
JPS6415094A (en) * 1987-07-09 1989-01-19 Matsushita Electric Ind Co Ltd Sensor apparatus of washing machine
JPH055066U (en) * 1991-07-08 1993-01-26 東陶機器株式会社 Dishwasher equipped with a dirt detection sensor
JPH057314U (en) * 1991-07-08 1993-02-02 東陶機器株式会社 Hot water purification system for baths equipped with a dirt detection sensor
JP2013539864A (en) * 2010-10-12 2013-10-28 ハマーテック エーエス Moisture measuring device
WO2017010182A1 (en) * 2015-07-13 2017-01-19 シャープ株式会社 Sensor circuit
JP2017191099A (en) * 2016-04-07 2017-10-19 国立大学法人東京農工大学 Food inspection device and food inspection method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5097396A (en) * 1973-12-25 1975-08-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5097396A (en) * 1973-12-25 1975-08-02

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57146141A (en) * 1981-03-04 1982-09-09 Kenseishiya:Kk Air bubble detector
JPS58103362U (en) * 1981-12-30 1983-07-14 株式会社工技研究所 Non-contact water quality meter
JPS5983045A (en) * 1982-09-28 1984-05-14 ソシエタ・アノニム・デイト：フアルムカ・ラボラトワ−ル Detector for ion concentration in liquid
JPH0410585B2 (en) * 1982-09-28 1992-02-25
JPS6415094A (en) * 1987-07-09 1989-01-19 Matsushita Electric Ind Co Ltd Sensor apparatus of washing machine
JPH055066U (en) * 1991-07-08 1993-01-26 東陶機器株式会社 Dishwasher equipped with a dirt detection sensor
JPH057314U (en) * 1991-07-08 1993-02-02 東陶機器株式会社 Hot water purification system for baths equipped with a dirt detection sensor
JP2013539864A (en) * 2010-10-12 2013-10-28 ハマーテック エーエス Moisture measuring device
WO2017010182A1 (en) * 2015-07-13 2017-01-19 シャープ株式会社 Sensor circuit
JPWO2017010182A1 (en) * 2015-07-13 2018-02-22 シャープ株式会社 Sensor circuit
JP2017191099A (en) * 2016-04-07 2017-10-19 国立大学法人東京農工大学 Food inspection device and food inspection method

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