JPS55119052A - Water-property sensor - Google Patents
Water-property sensorInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5097396A (en) * | 1973-12-25 | 1975-08-02 |
-
1979
- 1979-03-09 JP JP2742579A patent/JPS55119052A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5097396A (en) * | 1973-12-25 | 1975-08-02 |
Cited By (11)
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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