PL57287B1 - - Google Patents

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Publication number
PL57287B1
PL57287B1 PL122172A PL12217267A PL57287B1 PL 57287 B1 PL57287 B1 PL 57287B1 PL 122172 A PL122172 A PL 122172A PL 12217267 A PL12217267 A PL 12217267A PL 57287 B1 PL57287 B1 PL 57287B1
Authority
PL
Poland
Prior art keywords
sensor
core
sensor according
mkp
magnetostrictive
Prior art date
Application number
PL122172A
Other languages
Polish (pl)
Inventor
Michal Skarbinski prof.
inz. Slawoj Gwiaz¬dowski dr
inz. Wojciech Wlodarski mgr
Original Assignee
Politechnika Warszawska
Filing date
Publication date
Application filed by Politechnika Warszawska filed Critical Politechnika Warszawska
Publication of PL57287B1 publication Critical patent/PL57287B1/pl

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Description

Poniewaz wy¬ nik pomiaru nie zalezy od sposobu wprowadzania substancji do czujnika, a sam pomiar jest krótki przeto pomiary wilgotnosci czujnikami wedlug wynalazku sa latwe do zautomatyzowania.Czujnik pojemnosciowy do wilgotnosciomierzy wedlug wynalazku wyposazony w wibrator ma- gnetostrykcyjny, którego drgania udzielaja sie ba¬ danej wilgotnej i trudno zageszczalnej substancji, jak na przyklad masie formierskiej, zapewnia duza dokladnosc i powtarzalnosc wyników pomia¬ rów wilgotnosci, skraca czas trwania pomiarów i upraszcza ich automatyzacje. PLAs the measurement result does not depend on the method of introducing the substance into the sensor, and the measurement itself is short, the measurement of humidity with sensors according to the invention is easy to automate. a moist and difficult to compact substance, such as molding sand, ensures high accuracy and reproducibility of the results of humidity measurements, shortens the duration of measurements and simplifies their automation. PL

Claims (5)

Zastrzezenia patentowe 1. Czujnik pojemnosciowy do wilgotnosciomierzy substancji sypkich, a zwlaszcza mas rdzeniar- skich, formierskich i tym podobnych materia¬ lów, w postaci pojemnika otwartego z jednej strony i posiadajacego co najmniej dwie elek¬ trody pomiarowe zewnetrzna i wewnetrzna oraz zaopatrzony w wibrator, znamienny tym, ze rdzen wibratora magnetostrykcyjnego sta¬ nowi elektroda wewnetrzna (15), wykonana z materialu o wlasnosciach magnetostrykcyjnych i przewodzacych.Claims 1. Capacitance sensor for moisture meters for powdery substances, in particular for cores, molding sands and similar materials, in the form of a container open on one side and having at least two external and internal measuring electrodes and equipped with a vibrator, characterized in that the core of the magnetostrictive vibrator is an inner electrode (15) made of a material with magnetostrictive and conductive properties. 2. Czujnik wedlug zastrz. 1, znamienny tym, ze rdzen wibratora magnetostrykcyjnego jest za¬ mocowany swoim koncem od strony dna po¬ przez izolacje elektryczna (7) do obudowy czuj¬ nika stanowiacej elektrode zewnetrzna (2).2. Sensor according to claim A method as claimed in claim 1, characterized in that the core of the magnetostrictive vibrator is attached with its bottom end by electrical insulation (7) to the sensor housing constituting the external electrode (2). 3. Czujnik wedlug zastrz. 1 i 2, znamienny tym, ze elektroda wewnetrzna (15) posiada zgrubie¬ nie (15') w postaci kolnierza stanowiace dno czujnika drgajace w polu magnetycznym wraz z ta elektroda.3. Sensor according to claim The method of claim 1 and 2, characterized in that the inner electrode (15) has a shoulder (15 ') in the form of a collar forming the bottom of the sensor vibrating in a magnetic field with the electrode. 4. Odmiana czujnika wedlug zastrz. 1 i 2, zna¬ mienna tym, ze rdzen wibratora magnetostryk¬ cyjnego odizolowany elektrycznie od elektrod pomiarowych (2 i 3) zakonczony jest kolnie¬ rzem (40 stanowiacym drgajace dno czujnika.4. A variant of a sensor according to claim 1 and 2, characterized in that the core of the magnetostrictive vibrator, electrically insulated from the measuring electrodes (2 and 3), is terminated by a collar (40 constituting the vibrating bottom of the sensor). 5. Odmiana czujnika wedlug zastrz. 1, znamienna tym, ze walcowa elektroda zewnetrzna (17) stanowi rdzen wibratora magnetostrykcyjnego.KI. 42 1, 9/51 57287 MKP G 01 n Fig. 1KI. 42 1, 9/51 57287 MKP G 01 n Fig. 2KI. 42 1, 9/51 57287 MKP G 01 n Fig. 3 PL5. A variant of a sensor according to claim The method of claim 1, characterized in that the cylindrical external electrode (17) is the core of a magnetostrictive vibrator. 42 1, 9/51 57287 MKP G 01 n Fig. 1KI. 42 1, 9/51 57287 MKP G 01 n Fig. 2KI. 42 1, 9/51 57287 MKP G 01 n Fig. 3 PL
PL122172A 1967-08-14 PL57287B1 (en)

Publications (1)

Publication Number Publication Date
PL57287B1 true PL57287B1 (en) 1969-02-26

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