DE202004021049U1 - Meter for measuring and monitoring state of oil or fat, especially hot oil or fat used repeatedly in frying, by measuring electrical property with sensor connected to analyzer has means of minimizing distorting effect of water content - Google Patents
Meter for measuring and monitoring state of oil or fat, especially hot oil or fat used repeatedly in frying, by measuring electrical property with sensor connected to analyzer has means of minimizing distorting effect of water content Download PDFInfo
- Publication number
- DE202004021049U1 DE202004021049U1 DE202004021049U DE202004021049U DE202004021049U1 DE 202004021049 U1 DE202004021049 U1 DE 202004021049U1 DE 202004021049 U DE202004021049 U DE 202004021049U DE 202004021049 U DE202004021049 U DE 202004021049U DE 202004021049 U1 DE202004021049 U1 DE 202004021049U1
- Authority
- DE
- Germany
- Prior art keywords
- measuring device
- water content
- oil
- measuring
- fat
- 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 - Lifetime
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/02—Food
- G01N33/03—Edible oils or edible fats
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
Abstract
Description
Messvorrichtung zur Messung des Zustands von Ölen oder Fetten Die Erfindung betrifft eine Messvorrichtung zum Messen des Zustands von Ölen oder Fetten gemäß dem Oberbegriff des Anspruchs 1.measuring device for measuring the condition of oils or fats The invention relates to a measuring device for measuring the condition of oils or fats according to the generic term of claim 1.
Häufig werden bei der Zubereitung von Lebensmitteln heiße Öle oder Fette verwendet, die nicht nur einmalig verwendet werden, sondern in Friteusen über einen längeren Zeitraum zum aufeinanderfolgenden Garen von unterschiedlichen Lebensmitteln dienen. Hierbei wird das Öl oder Fett bei den heißen Betriebstemperaturen zwischen ca. 90° und 180° C aufgrund von Oxidation zerstört, und es entstehen unerwünschte chemische Produkte, wie z.B. freie Fettsäuren oder Polymere, die nicht nur eine geschmackliche Verschlechterung bewirken, sondern sich auch gesundheitsschädlich auswirken können.Become frequent used in the preparation of food hot oils or fats that not only be used once, but in deep fryers over one longer Period for successive cooking of different foods. This is the oil or fat at the hot operating temperatures between about 90 ° and 180 ° C due destroyed by oxidation, and there are unwanted chemical products, e.g. free fatty acids or polymers that are not cause only a taste deterioration, but yourself also harmful to health can affect.
Um Frittieröle oder Fette weder zu früh noch zu spät auszutauschen, werden Messvorrichtungen zum Messen des Zustandes der Öle oder Fette eingesetzt, mit denen diese auf ihre elektrischen Eigenschaften untersucht werden. Besonders geeignet ist die Messung der Dielektrizitätskonstanten, die ein verlässliches Maß für den Zerstörungsgrad des Fettes oder Öles darstellt.Around frying oils or fats neither too soon still too late become measuring devices for measuring the condition the oils or fats used by these on their electrical properties to be examined. Particularly suitable is the measurement of the dielectric constant, the one reliable Measure of the degree of destruction of fat or oil represents.
Aus
der
Eine
Weiterentwicklung der oben genannten Messvorrichtung beschreibt
die
Nachteilig an dieser Messvorrichtung ist es, dass die Messwerte trotz Verwendung zuverlässiger Sensoren und geeigneter Auswerteelektronik oftmals über dem tatsächlichen Wert liegen.adversely At this measuring device it is that the readings despite use reliable sensors and suitable evaluation electronics often above the actual Value.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Messvorrichtung zu schaffen, die genauere und zuverlässigere Messergebnisse liefert.Of the The present invention is therefore based on the object, a measuring device to provide more accurate and reliable measurement results.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Ausgestaltungen und Weiterbildungen des Erfindungsgedankens sind Gegenstand von Unteransprüchen.These The object is solved by the features of claim 1. refinements and further developments of the inventive concept are the subject of Dependent claims.
Der Erfindung liegt die Erkenntnis zugrunde, dass beim Frittieren große Mengen an Wasserdampf aus dem Frittiergut ausgetrieben werden, von dem ein gewisser Teil im Frittieröl verbleibt. Da die Dielektrizitätskonstante von Wasser etwa 20 mal größer ist als die von Frittieröl, verursachen selbst kleine Mengen an Wasser zu hohe Messwerte. Je nach Alter und Temperatur des Öls kann es zwischen 5 Minuten (frisches Öl und hohe Temperatur) und 30 Minuten (altes Öl und niedrige Temperatur) dauern, bis der Wassereinfluss auf ein tolerierbares Maß gesunken ist und der Messwert mit dem tatsächlichen Wert des Öls übereinstimmt.Of the Invention is based on the finding that when frying large quantities are expelled from the fried food to be steam, of which a certain part in the frying oil remains. As the dielectric constant of water is about 20 times larger than of frying oil, even small amounts of water cause too high readings. ever according to age and temperature of the oil It can take between 5 minutes (fresh oil and high temperature) and 30 minutes (old oil and low temperature) take until the water influence on a tolerable level has dropped and the reading with the actual Value of the oil matches.
Erfindungsgemäß ist nun vorgesehen, dass die Messvorrichtung Mittel aufweist, die geeignet sind, den verfälschenden Einfluss des Wassergehalts im Messgut auf das Messergebnis zu minimieren, wodurch das Messergebnis wesentlich genauer ist.According to the invention is now provided that the measuring device has means which are suitable the falsifying one Minimize the influence of the water content in the material to be measured on the measurement result, whereby the measurement result is much more accurate.
Vorzugsweise umfassen die Mittel einen Feuchtesensor, der im einzutauchenden Bereich der Messvorrichtung angeordnet ist. Hierdurch wird auf sichere Weise festgestellt, wenn selbst kleine Mengen an Wasser im Öl vorhanden sind.Preferably For example, the means comprise a humidity sensor to be immersed in Area of the measuring device is arranged. This will be on safe Way determined if even small amounts of water are present in the oil are.
In einer weiteren bevorzugten Ausführungsform umfassen die Mittel eine elektronische Schaltung zur Bestimmung der komplexen Impedanz sowie des Phasenwinkels der Dielektrizitätskonstanten, wodurch eine Information erhalten wird, die im wesentlichen mit dem Wassergehalt des Öls korreliert. Somit ist man in der Lage, Störeffekte durch Wasser von den Messeffekten durch Altern des Öls zu unterscheiden.In a further preferred embodiment the means comprise an electronic circuit for determination the complex impedance and the phase angle of the dielectric constant, whereby information is obtained which is essentially related to the water content of the oil correlated. Thus, one is able to secrete effects from the water Measuring effects due to aging of the oil to distinguish.
In einer weiteren bevorzugten Ausführungsform weisen die Mittel eine Vorrichtung zur Filterung des Messguts auf, die den Träger des Sensors zur Bestimmung der Dielektrizitätskonstanten umgibt. Durch eine derartige Vorrichtung wird gewährleistet, dass lediglich Öl zum Sensor gelangt, welchem die Restfeuchte an Wassergehalt durch die trocknende Filtervorrichtung entzogen wurde.In a further preferred embodiment, the means comprise a device for filtering the material to be measured, which is the carrier of the sensor for Determination of the dielectric constant surrounds. By such a device ensures that only oil reaches the sensor, which has been removed from the moisture content of the residual moisture content by the drying filter device.
Vorteilhafterweise weist die Messvorrichtung weiterhin einen Temperatursensor auf, der zusätzliche Angaben liefert, welche die Bestimmung des Zustands des Messguts präzisieren.advantageously, the measuring device furthermore has a temperature sensor, the additional one Provides information which determines the condition of the material to be measured specified.
Weitere Eigenschaften, Merkmale und Vorteile der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung unter Bezugnahme auf die Zeichnungen.Further Features, features and advantages of the present invention will become apparent from the following description with reference on the drawings.
Von
dem Gehäuse
Im
unteren Bereich des ersten Trägers
Der
Zwischenbereich zwischen Träger
In
Der
Temperatursensor
Wie
aus
In
der in
Alternativ
kann, wie in
Ebenso ist es möglich, mittels einer an sich bekannten elektronischen Schaltung die komplexe Impedanz sowie den Phasenwinkel der Dielektrizitätskonstanten zu bestimmen. Hieraus lassen sich Informationen entnehmen, die im wesentlichen mit dem Wassergehalt des Öls korrelieren. Dadurch ist man in der Lage, Störeffekte durch Wasser von den Effekten durch Altern des Öls zu unterscheiden.As well Is it possible, by means of a per se known electronic circuit, the complex impedance and to determine the phase angle of the dielectric constant. From this information can be taken, which is essentially with the water content of the oil correlate. This makes it possible to remove the effects of water from the effects by aging the oil to distinguish.
Die erfindungsgemäße Messvorrichtung kann darüber hinaus Mittel zur Kompensation des Messfehlers im Messsignal und/oder eine Anzeigeeinrichtung aufweisen, die bei einem erhöhten Wassergehalt ein entsprechendes optisches und/oder akustisches Signal bereitstellt.The Measuring device according to the invention can about that addition means for compensating the measurement error in the measurement signal and / or have a display device that at an increased water content provides a corresponding optical and / or acoustic signal.
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202004021049U DE202004021049U1 (en) | 2004-04-06 | 2004-04-06 | Meter for measuring and monitoring state of oil or fat, especially hot oil or fat used repeatedly in frying, by measuring electrical property with sensor connected to analyzer has means of minimizing distorting effect of water content |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004016957A DE102004016957B4 (en) | 2004-04-06 | 2004-04-06 | Measuring device for measuring the state of oils or fats |
DE202004021049U DE202004021049U1 (en) | 2004-04-06 | 2004-04-06 | Meter for measuring and monitoring state of oil or fat, especially hot oil or fat used repeatedly in frying, by measuring electrical property with sensor connected to analyzer has means of minimizing distorting effect of water content |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202004021049U1 true DE202004021049U1 (en) | 2006-09-14 |
Family
ID=37055785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE202004021049U Expired - Lifetime DE202004021049U1 (en) | 2004-04-06 | 2004-04-06 | Meter for measuring and monitoring state of oil or fat, especially hot oil or fat used repeatedly in frying, by measuring electrical property with sensor connected to analyzer has means of minimizing distorting effect of water content |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE202004021049U1 (en) |
-
2004
- 2004-04-06 DE DE202004021049U patent/DE202004021049U1/en not_active Expired - Lifetime
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 20061019 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20070712 |
|
R157 | Lapse of ip right after 6 years |
Effective date: 20101103 |