WO2009127603A1 - Capteur à temps de réaction court - Google Patents

Capteur à temps de réaction court Download PDF

Info

Publication number
WO2009127603A1
WO2009127603A1 PCT/EP2009/054326 EP2009054326W WO2009127603A1 WO 2009127603 A1 WO2009127603 A1 WO 2009127603A1 EP 2009054326 W EP2009054326 W EP 2009054326W WO 2009127603 A1 WO2009127603 A1 WO 2009127603A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
outer shell
metal layer
insulating material
measuring element
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.)
Ceased
Application number
PCT/EP2009/054326
Other languages
German (de)
English (en)
Inventor
Heinz Gross
Anton Völker
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.)
WIKA Alexander Wiegand SE and Co KG
Original Assignee
WIKA Alexander Wiegand SE and Co KG
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 WIKA Alexander Wiegand SE and Co KG filed Critical WIKA Alexander Wiegand SE and Co KG
Publication of WO2009127603A1 publication Critical patent/WO2009127603A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/08—Protective devices, e.g. casings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
    • G01K1/18—Special arrangements for conducting heat from the object to the sensitive element for reducing thermal inertia

Definitions

  • the invention relates to a sensor with a short response time, and more particularly to a protected against external influences by a metal sheath sensor.
  • thermocouples are housed in the connecting cables connected to a pair of thermocouples in a protective housing.
  • the thermocouples are shielded from the atmosphere to be measured by a protective cap attached to the protective housing. It is possible to provide the cap with a thread and screw it onto the protective housing or put the cap on the protective housing and to weld with this.
  • the thermocouples as well as the connecting cables are protected by insulation components kept separated within the protective housing, which are screwed into the protective housing.
  • the invention is therefore based on the object to provide a sensor with a short response time, which can be easily produced by a few manufacturing steps. This object is achieved by a sensor with the features of claim 1.
  • a sensor according to the invention comprises an insulating body which receives lines connected to at least one sensing element exposed on the outer surface of the insulating body.
  • the lines are electrically isolated from each other and from the outer shell, which are preferably arranged in the interior of the insulating material in such a way that they do not touch. It is also possible that the leads on the outside of the insulating body, i. are arranged on the outer circumference. You can also be partially embedded in the insulating material.
  • the aforementioned measuring element is a known temperature sensor, ie a known thermocouple or a known resistance element.
  • the measuring element is a PTIOO sensor, a NTC resistance element (thermistor element), a PTC resistance element (PTC thermistor element) or a specific semiconductor element whose resistances change in each case depending on the temperature.
  • Resistance change which causes a change in the voltage applied to the lines or the current flowing through the lines, can be measured and the resulting temperature can be determined.
  • the insulating body is preferably made of a ceramic material, e.g. a pressed ceramic powder, glass or porcelain, but can also consist of any other electrically insulating material.
  • the senor has an atomically deposited metal layer with a preferably homogeneous structure, which preferably surrounds the insulating body in a shape-accurate manner and at least in sections.
  • the layer is preferably deposited in a continuous deposition process.
  • the measuring element is completely covered by the outer shell formed in this way and can be in direct contact with it.
  • the measuring element can also be completely or partially embedded in this outer shell.
  • various methods are applicable, such as e.g. an electrochemical
  • Deposition processes eg electroplating, a chemical vapor deposition (CVD) or a physical vapor deposition (PVD) process. These methods all have in common that a metal layer with a very thin layer thickness can be formed on an object.
  • the layer thickness in the sensor according to the invention is preferably less than 500 ⁇ m, but may also be less than 100 ⁇ m.
  • the vibration resistance or shock resistance of the sensor can be significantly increased.
  • the sensor of the invention may preferably be a pure temperature sensor, wherein at least one temperature sensor as a measuring element and the associated lines are separated from the thin metal layer to the atmosphere. It is also possible that the outer shell surrounds the insulating material including the temperature sensor over the entire length of the insulating material.
  • the insulating body may also be partially or completely housed in a housing such as e.g. be arranged a tube which forms a part of the outer shell.
  • a housing such as e.g. be arranged a tube which forms a part of the outer shell.
  • the part of the insulating material which is possibly arranged outside the tube or the end of the tube at which the insulating material body is exposed to the outside is covered by the metal layer, which thus forms the remainder of the outer envelope.
  • the outer shell deposited on one of the previously described methods is preferably in direct contact with the measuring element.
  • the measuring element which is exposed to the outside before depositing is covered by the deposition of the metal layer and is in contact therewith in a manner which is, for example, heat and / or electricity. Since it is possible to form a small layer thickness based on the described deposition methods, it is possible in the case of the temperature sensor as a measuring element that a temperature can be measured by the temperature sensor almost immediately with negligible heat losses on the metal layer. This will increase the accuracy of the Measurement increases and the response time of the sensor considerably shortened.
  • Fig. 1 is a partial sectional view of a sensor according to a preferred embodiment of the present invention.
  • the illustrated in Fig. 1 sensor 1 has a protective tube with a protective tube jacket 41 with a large outer diameter and a projection 42 with a small outer diameter, wherein the protective tube jacket 41 has a larger outer diameter than the extension 42.
  • an insulating body 3 is arranged, which consists of an insulating material, such as ceramic, glass or the like.
  • the protective tube is filled to the outer or distal edge of the extension 42 with this insulating material.
  • Lines 23 are in the insulating body. 3 embedded and stand on the outer edge of the extension 42, so that the ends of the lines protrude from the Isolierstoff emotions 3.
  • the lines 23 are connected at their other end to an evaluation unit (not shown) or the like, which receives the change of the measuring current or the applied voltage and outputs a corresponding signal.
  • Connecting leads 21, which are connected to the measuring element 11, are in an electrically insulating solid 5, such.
  • Embedded cement or a polymer-cement mixture wherein the solid 5 is formed according to the shape of the protective tube into a cylindrical shape.
  • the measuring element 11 is exposed to the outside, i. it is not embedded in the solid 5.
  • An outer shell 43 made of a thin metal layer is applied in this embodiment by electroplating on the electrically insulating solid 5 and on the extension 42 so that the forming cylindrical outer diameter of the outer shell 43 coincides with the outer diameter of the protective tube shell 41.
  • the measuring element 11 of the sensor 1 is arranged so that it is connected directly to the forming outer shell 43 after electroplating.
  • the outer shell 43 is formed here in a single electroplating process.
  • the sensor 1 of the present embodiment is limited to a temperature sensor.
  • any other type of sensor such as a pressure sensor having a pressure sensing element, may be realized by the structure described above.
  • Insulating body 3 including the temperature sensor 11 is covered with a continuous thin, deposited metal layer.
  • the temperature sensor 11 may be arranged inter alia in a cavity and be positively covered by the metal layer, which is formed open in the insulating material 3 to the outside thereof.
  • the shape of the sensor 1 is not limited to the above-described cylindrical shape. Any other geometric shape is conceivable, for example a rod shape or a quadrangular shape, since the formed metal layer can be applied to any surface shape.
  • the sensor 1 may also be formed in a plate shape, so that the sensor 1 can be fixed using a further component at a measuring point.
  • the plate-like sensor 1 can be screwed by a union nut and using appropriate sealing body to a pipe whose internal temperature is to be measured.
  • the extension 42 of the protective tube and the electrically insulating solid 5 can be omitted in a further modification.
  • the connection lines 21 are shortened or the measuring element 11 is connected directly to the lines 23. As a result, it is possible for the metal layer to be able to cover the remaining protective tube jacket 41 and the surface of the insulating material body 3 that is exposed towards its outside in a dimensionally accurate or form-fitting manner.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

L'invention concerne un capteur (1) qui présente un corps (3) en matériau isolant pour accueillir des câbles (23), lesquels sont reliés avec au moins un élément de mesure (11) exposé sur la surface extérieure du corps (3) en matériau isolant. Au moins certaines sections du corps (3) en matériau isolant sont entourées d'une gaine extérieure (43) qui est une couche métallique réalisée par déposition atomique recouvrant l'élément de mesure (11).
PCT/EP2009/054326 2008-04-17 2009-04-09 Capteur à temps de réaction court Ceased WO2009127603A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008001243A DE102008001243A1 (de) 2008-04-17 2008-04-17 Sensor mit kurzer Ansprechzeit
DE102008001243.2 2008-04-17

Publications (1)

Publication Number Publication Date
WO2009127603A1 true WO2009127603A1 (fr) 2009-10-22

Family

ID=40897639

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/054326 Ceased WO2009127603A1 (fr) 2008-04-17 2009-04-09 Capteur à temps de réaction court

Country Status (2)

Country Link
DE (1) DE102008001243A1 (fr)
WO (1) WO2009127603A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2147958A1 (de) * 1971-09-25 1973-03-29 Alfa Laval Bergedorfer Eisen Temperaturfuehler
JPH01299423A (ja) * 1988-05-27 1989-12-04 Nippon Steel Corp 保護管式連続測温計
EP0818671A2 (fr) * 1996-07-12 1998-01-14 Isuzu Ceramics Research Institute Co., Ltd. Thermocouple avec manteau-protecteur en céramique
WO2006100965A1 (fr) * 2005-03-22 2006-09-28 Idemitsu Kosan Co., Ltd. Instrument de mesure de la temperature superficielle d'un metal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3513441A1 (de) 1984-04-14 1985-10-17 Kobe Steel, Ltd., Kobe, Hyogo Temperaturmessfuehler
JPS63281030A (ja) * 1987-05-13 1988-11-17 Sumitomo Electric Ind Ltd 温度計などの接触子
US6338571B1 (en) * 2000-02-03 2002-01-15 Min-Ying Chen Rapid heat conducting structure of an electronic thermometer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2147958A1 (de) * 1971-09-25 1973-03-29 Alfa Laval Bergedorfer Eisen Temperaturfuehler
JPH01299423A (ja) * 1988-05-27 1989-12-04 Nippon Steel Corp 保護管式連続測温計
EP0818671A2 (fr) * 1996-07-12 1998-01-14 Isuzu Ceramics Research Institute Co., Ltd. Thermocouple avec manteau-protecteur en céramique
WO2006100965A1 (fr) * 2005-03-22 2006-09-28 Idemitsu Kosan Co., Ltd. Instrument de mesure de la temperature superficielle d'un metal
US20090028210A1 (en) * 2005-03-22 2009-01-29 Idemitsu Kosan Co., Ltd., Metal surface temperature measuring instrument

Also Published As

Publication number Publication date
DE102008001243A1 (de) 2009-10-22

Similar Documents

Publication Publication Date Title
EP2612122B1 (fr) Procédé et dispositif d'étalonnage d'un thermomètre in situ
EP3688430B1 (fr) Dispositif de mesure de température et procédé de détermination de température
EP3566034B1 (fr) Dispositif et procédé d'étalonnage in situ d'un thermomètre
DE102013110291A1 (de) Verfahren zur Herstellung eines Rußsensors mit einem Laserstrahl
DE102013100892B4 (de) Eintauch-Temperatursensor
DE2907032A1 (de) Elektrochemischer messfuehler fuer die bestimmung des sauerstoffgehaltes in gasen, insbesondere in abgasen von verbrennungsmotoren
DE3519576C2 (fr)
DE112014000282T5 (de) Temperatursensor für hohe Temperaturen
DE1489266A1 (de) Mantelthermoelement fuer hohe Temperaturen
EP2215442B1 (fr) Dispositif pour déterminer et/ou surveiller la température
DE102013206406B4 (de) Raumklimamessgerät und Regelungseinrichtung
WO2009127603A1 (fr) Capteur à temps de réaction court
WO2019115118A1 (fr) Surveillance d'état d'un capteur de température
DE19537431C2 (de) Widerstandsthermometer
WO2008145512A2 (fr) Dispositif permettant de déterminer et/ou de surveiller une grandeur de traitement
DE3937205A1 (de) Messeinrichtung zur erfassung einer physikalischen groesse
DE3416945A1 (de) Feuchtigkeitssensor und verfahren zu seiner herstellung
DE10149628B4 (de) Temperatursensor
DE1943748A1 (de) Heiz- und Temperaturmessgeraet
DE19802296A1 (de) Verfahren und Temperaturfühler zur Messung von Oberflächentemperaturen
DE102015221458B3 (de) Verfahren zur Herstellung eines Messgeräts mit einer Sensorspitze
DE102005024865B3 (de) Messelement, insbesondere Hochtemperaturmesselement
DE102019124603A1 (de) Nicht invasives Thermometer
DE202024104615U1 (de) Temperaturmessvorrichtung
DE102007039935A1 (de) Vorrichtung zur Bestimmung und/oder Überwachung einer Prozess- größe

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09732069

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 09732069

Country of ref document: EP

Kind code of ref document: A1