DE19643221B4 - Sensor for radiation pyrometric temperature measurement under conditions of high ambient temperatures - Google Patents
Sensor for radiation pyrometric temperature measurement under conditions of high ambient temperatures Download PDFInfo
- Publication number
- DE19643221B4 DE19643221B4 DE19643221A DE19643221A DE19643221B4 DE 19643221 B4 DE19643221 B4 DE 19643221B4 DE 19643221 A DE19643221 A DE 19643221A DE 19643221 A DE19643221 A DE 19643221A DE 19643221 B4 DE19643221 B4 DE 19643221B4
- Authority
- DE
- Germany
- Prior art keywords
- thermocouple
- sensor
- radiation
- temperature
- pair
- 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.)
- Expired - Fee Related
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 19
- 238000009529 body temperature measurement Methods 0.000 title 1
- 229910000679 solder Inorganic materials 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000011343 solid material Substances 0.000 claims abstract description 4
- 239000011149 active material Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 1
- 239000012265 solid product Substances 0.000 abstract 1
- 230000002452 interceptive effect Effects 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 description 1
- 229910001632 barium fluoride Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 230000001447 compensatory effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
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- 239000013078 crystal Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 238000013386 optimize process Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
- G01J5/12—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using thermoelectric elements, e.g. thermocouples
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/18—Condition of the laundry, e.g. nature or weight
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/04—Casings
- G01J5/041—Mountings in enclosures or in a particular environment
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/12—Temperature
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/32—Temperature
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/64—Radiation, e.g. microwaves
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
- D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Radiation Pyrometers (AREA)
Abstract
Sensor zur strahlungspyrometrischen Messung der Temperatur von festen Werkstoffen, Materialien und Erzeugnissen unter Bedingungen hoher Umgebungstemperaturen am Sensor im Innern von Heißlufttrocknern und Wärmebehandlungsanlagen auf der Grundlage einer oder mehrerer in einem metallischen Gehäuse (1) hinter einem im langwelligen Infrarotbereich strahlungsdurchlässigen Fenster (2) befindlichen, gegenpolar in Reihe geschalteten Thermosäulen (3, 4), deren Drähte (5) aus gegenseitig thermoelektrisch aktivem Material achsparallel in einem zylindrischen Körper (6) aus schlecht wärmeleitendem und temperaturbeständigem, Material symmetrisch zueinander angeordnet sind, wobei sich die Lötstellen (7) auf den Grundflächen (61, 62) dieses Körpers (6) befinden und der Teil der Lötstellen (7), die die Vergleichs- oder Bezugslötstellen (72) bilden, durch einen strahlungsundurchlässigen Schild (8) vor oder hinter dem Fenster (2) gegenüber der zu messenden Strahlung abgeschirmt sind und ein erstes Thermoelement (9) zur Messung der Eigentemperatur des Sensors am Schild (8) befestigt ist, dadurch gekennzeichnet, daß ein zweites Thermoelement (10) als Vergleichselement zum ersten Thermoelement (9) ausgebildet...sensor for the radiation pyrometric measurement of the temperature of solid materials, Materials and products in conditions of high ambient temperatures on the sensor inside hot air dryers and heat treatment plants based on one or more in a metallic housing (1) behind a radiation-permeable window in the long-wave infrared range (2), in opposite polarity in series thermopiles (3, 4), their wires (5) of mutually thermoelectrically active material axially parallel in a cylindrical body (6) from poorly heat-conducting and temperature resistant, material are arranged symmetrically to each other, wherein the solder joints (7) on the bases (61, 62) of this body (6) and the part of the solder joints (7) constituting the comparison or reference solder joints (72) a radiopaque Shield (8) in front of or behind the window (2) opposite the radiation to be measured are shielded and a first thermocouple (9) for measuring the Temperature of the sensor is attached to the shield (8), thereby characterized in that a second thermocouple (10) as a comparison element to the first thermocouple (9) trained ...
Description
Die Erfindung ermöglicht die berührungslose Messung der Oberflächentemperatur von festen Werkstoffen, Materialien und Erzeugnissen insbesondere im Inneren von Heißlufttrocknern und Wärmebehandlungs-Anlagen unter Bedingungen hoher Umgebungstemperaturen und an Stellen, die visuell von außen nicht zugängig sind. Die mittels mehrerer auf diesem Verfahren beruhender und innerhalb der Anlage in unmittelbarer Nähe der zu messenden Oberfläche angeordneter Sensoren erhaltene Kenntnis des räumlichen und zeitlichen Temperaturprofils des zu behandelnden Materials ist neben anderen Prozeßparametern eine wichtige Voraussetzung zur optimierten Prozeßführung im Hinblick auf Wirtschaftlichkeit und Qualitätssicherung.The Invention allows the non-contact measurement the surface temperature of solid materials, materials and products in particular inside of hot air dryers and heat treatment equipment under conditions of high ambient temperatures and in places that visually from the outside not accessible are. By means of several based on this method and within the plant in the immediate vicinity the surface to be measured arranged sensors obtained knowledge of the spatial and temporal temperature profile of the Material to be treated is among other process parameters an important prerequisite for optimized process control in the In terms of cost-effectiveness and quality assurance.
Aus
der GB 2 090 418 A ist ein Sensor mit Thermosäulen zur Messung von Infrarotstrahlung
bekannt, bei dem der Einfluß der
Raumtemperatur kompensiert wird. Die
Nach DE 4 991 257 A1 und WO 96/163118 A1 wird eine Vorrichtung zur strahlungs pyrometrischen Messung von Temperaturen mittels Thermosäulen unter Anwendung von Werkstoffen und Bauelementen vorgeschlagen, die gegenüber Temperaturen bis zu 400°C und mehr beständig sind, so daß dies Messungen unter Bedingungen hoher Umgebungstemperaturen ermöglicht, ohne daß Maßnahmen zur Kühlung des Sensors erforderlich sind.To DE 4 991 257 A1 and WO 96/163118 A1 discloses a device for radiation pyrometric Measurement of temperatures by means of thermopiles using materials and devices proposed to temperatures up to 400 ° C and more resistant are, so this Enables measurements under conditions of high ambient temperatures, without action for cooling of the sensor are required.
Das
Prinzip dieser Meßvorrichtung
beruht darauf, daß die
Lötstellen
Die
Kompensation nichtstrahlungsbedingter Temperaturunterschiede zwischen
den Lötstellen
Im
Falle eines Temperaturunterschiedes zwischen dem Schild
Trotz
dieser Kompensationsmaßnahmen
treten in der Praxis Signalstörungen
in zweiter Ordnung auf, die ihre Ursache in einer zwar geringen,
aber fertigungstechnisch nicht vermeidbaren Unsymmetrie zwischen
der sensitiven Säule
Der Erfindung liegt die Aufgabe zugrunde, diese Störung auszuschalten und auch während einer sprunghaften Änderung der Umgebungstemperatur eine zuverlässige Funktion des Sensors zu gewährleisten.Of the Invention is based on the object to turn off this disorder and also while a sudden change the ambient temperature a reliable function of the sensor to ensure.
Dies
wird erfindungsgemäß erreicht,
indem das Temperaturgefälle
zwisclien der Sensor-Peripherie und dem Sensorinneren mittels gegeneinander geschalteter
Thermoelemente gemessen und dieses Signal direkt durch Reihenschaltung
dem strahlungsrelevanten, aber gestörten Signal der Thermosäulen
Als
ein solches, das Kompensations-Signal liefernde Thermoelemente-Paar
dient ein auf der Grundfläche
Das
Kompensations-Signal des Thermoelemente-Paares
Nach
einem weiteren Merkmal der Erfindung kann das Kompensations-Signal
alternativ erzeugt werden, indem anstelle des am Schild
Für den Fall,
daß das
Störsignal
das mit einem Thermoelemente-Paar erzielbare Kompensations-Signal übertrifft,
wird nach einem weiteren Merkmal der Erfindung vorgeschlagen, daß sowohl
im Peripherie-Bereich des Sensors als auch in dessen Achsnähe mehrere,
und zwar in beiden Bereichen eine gleiche Anzahl von Thermoelementen
angeordnet sind, die paarweise gegenpolig in Reihe geschaltet anstelle
des Thermoelemente-Paares
Zur Dämpfung starker Temperaturgefälle innerhalb des Sensors bei extremen Temperatursprüngen, z.B. bei Anblasen des kalten Sensors mit Heißluft oder umgekehrt, wird vorgeschlagen, das Sensorgehäuse mit einem Mantel aus wärmeisolierendem und temperaturbeständigen Material zu umkleiden.to damping strong temperature gradient within the sensor at extreme temperature jumps, e.g. when blowing the cold sensor with hot air or vice versa, it is proposed that the sensor housing with a coat of heat-insulating and temperature resistant To change the material.
Zur
Ermittlung des optimalen Wertes für den Shunt-Widerstand
An Hand der Bilder 1 bis 4 werden nachfolgend zwei Ausführungsbeispiele der Erfindung beschrieben. Es zeigenAt Hand of the pictures 1 to 4 are below two embodiments of the invention. Show it
Auf
einem zylindrischen Tragkörper
Am
Schild
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19643221A DE19643221B4 (en) | 1996-10-19 | 1996-10-19 | Sensor for radiation pyrometric temperature measurement under conditions of high ambient temperatures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19643221A DE19643221B4 (en) | 1996-10-19 | 1996-10-19 | Sensor for radiation pyrometric temperature measurement under conditions of high ambient temperatures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE19643221A1 DE19643221A1 (en) | 1998-04-23 |
| DE19643221B4 true DE19643221B4 (en) | 2005-12-29 |
Family
ID=7809222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19643221A Expired - Fee Related DE19643221B4 (en) | 1996-10-19 | 1996-10-19 | Sensor for radiation pyrometric temperature measurement under conditions of high ambient temperatures |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19643221B4 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3399425B2 (en) * | 1999-11-19 | 2003-04-21 | 株式会社村田製作所 | Thermopile type thermoelectric sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2090418A (en) * | 1980-12-30 | 1982-07-07 | Horiba Ltd | Thermopile detector |
| US5059543A (en) * | 1990-09-21 | 1991-10-22 | The Board Of Regents Acting For And On Behalf Of The University Of Michigan | Method of manufacturing thermopile infrared detector |
| DE4441257A1 (en) * | 1994-11-19 | 1996-05-23 | Pleva Gmbh | Sensor for radiation pyrometic temperature measurement under conditions of high ambient temperatures |
| DE19615244A1 (en) * | 1996-04-18 | 1997-10-23 | Pleva Gmbh | Radiation pyrometer measuring object temperature in e.g. drying- or heat treatment chamber |
-
1996
- 1996-10-19 DE DE19643221A patent/DE19643221B4/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2090418A (en) * | 1980-12-30 | 1982-07-07 | Horiba Ltd | Thermopile detector |
| US5059543A (en) * | 1990-09-21 | 1991-10-22 | The Board Of Regents Acting For And On Behalf Of The University Of Michigan | Method of manufacturing thermopile infrared detector |
| DE4441257A1 (en) * | 1994-11-19 | 1996-05-23 | Pleva Gmbh | Sensor for radiation pyrometic temperature measurement under conditions of high ambient temperatures |
| WO1996016318A1 (en) * | 1994-11-19 | 1996-05-30 | Pleva Gmbh | Sensor for radiation-pyrometric temperature measurement at high ambient temperatures |
| DE19615244A1 (en) * | 1996-04-18 | 1997-10-23 | Pleva Gmbh | Radiation pyrometer measuring object temperature in e.g. drying- or heat treatment chamber |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19643221A1 (en) | 1998-04-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8364 | No opposition during term of opposition | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140501 |