DE283732C - - Google Patents
Info
- Publication number
- DE283732C DE283732C DENDAT283732D DE283732DA DE283732C DE 283732 C DE283732 C DE 283732C DE NDAT283732 D DENDAT283732 D DE NDAT283732D DE 283732D A DE283732D A DE 283732DA DE 283732 C DE283732 C DE 283732C
- Authority
- DE
- Germany
- Prior art keywords
- roller
- liquid
- housing
- measured
- viscosity
- 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.)
- Active
Links
- 239000007788 liquid Substances 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims 1
- 230000037250 Clearance Effects 0.000 description 2
- 230000035512 clearance Effects 0.000 description 2
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/02—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material
- G01N11/04—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture
- G01N11/08—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by measuring flow of the material through a restricted passage, e.g. tube, aperture by measuring pressure required to produce a known flow
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Description
DEUTSCHES REICHGERMAN EMPIRE
REiCHSPATENTAMTREICH PATENT OFFICE
PATENTSCHRIFTPATENT LETTERING
- Jtt 283732 KLASSE 42/. GRUPPE- Jtt 283732 CLASS 42 /. GROUP
Dr. LUDWIG GÜMBEL in CHARLOTTENBURG.Dr. LUDWIG GÜMBEL in CHARLOTTENBURG.
Patentiert im Deutschen Reiche vom 17. Februar 1914 ab.Patented in the German Empire on February 17, 1914.
Die vorliegende Erfindung beruht auf der Erkenntnis, daß die Viscosität dadurch bestimmt werden kann, daß man die Druckzunahme einer Flüssigkeit mißt, welche entsteht, wenn man zwei Flächen von der Länge L und dein Abstande der beiden Flächen h gegeneinander mit der Geschwindigkeit u verschiebt, wobei der Zwischenraum zwischen den Flächen mit derjenigen Flüssigkeit ausgefüllt werden muß, deren Viscosität zu messen ist; dann errechnet sich die Viscosität aus der Flüssigkeit aus der BeziehungThe present invention is based on the knowledge that the viscosity can be determined by measuring the pressure increase of a liquid which arises when two surfaces of the length L and the distance between the two surfaces h are displaced with respect to one another at the speed u, where the space between the surfaces must be filled with the liquid whose viscosity is to be measured; then the viscosity is calculated from the liquid from the relationship
■ ■· . , p · h*
η = proportional --=- . ■ ■ ·. , p · h *
η = proportional - = -.
ic L/ ' M ic L / 'M
Der diesem Verfahren dienende Apparat besteht (Fig. ι und 2) aus einem zylindrischen Gehäuse A, in welchem eine Walze B drehbar gelagert. ist, deren Durchmesser von dem Durchmesser des Gehäuses um ein bekanntes Maß verschieden . ist. ■ Die Walze schließt sich an den Stirnflächen genau an das Gehäuse an, so daß ein Austritt der Flüssigkeit an den Stirnflächen nicht oder jedenfalls nicht in meßbarer Weise eintritt. Die Flüssigkeit, deren Viscosität zu messen ist, tritt an beliebiger Stelle des Umfanges ein und wird durch die sich drehende Walze mitgenommen. Der Spielraum zwischen der Walze und dem Gehäuse wird an einer Stelle durch eine achsiale, im Umfang des Gehäuses eingelagerte Feder C stark verengt. An dieser Stelle tritt bei der Drehung der Walze eine Druckerhöhung der Flüssigkeit auf, welche gemessen werden kann, und aus welcher nach der oben gegebenen Formel sich die Viscosität einfach bestimmen läßt. Statt die Walze genau konzentrisch -in dem Gehäuse zu lagern, kann man auch gemäß Fig. 3 so vorgehen, daß man die Walze B exzentrisch lagert und die Flüssigkeit an denjenigen Punkten des Umfanges einführt, in welchem der größte Abstand zwischen Walze und Gehäuse vorhanden ist, und daß man die Druckzunahme ungefähr an derjenigen Stelle mißt, an welcher der geringste Spielraum zwischen Walze und Gehäuse vorhanden ist.The apparatus used for this process consists (FIGS. 1 and 2) of a cylindrical housing A in which a roller B is rotatably mounted. whose diameter differs from the diameter of the housing by a known amount. is. The roller adjoins the housing exactly at the end faces, so that the liquid does not emerge at the end faces, or at least not in a measurable manner. The liquid, the viscosity of which is to be measured, enters at any point on the circumference and is carried along by the rotating roller. The clearance between the roller and the housing is greatly narrowed at one point by an axial spring C embedded in the circumference of the housing. At this point, as the roller rotates, the pressure of the liquid increases, which can be measured and from which the viscosity can be easily determined using the formula given above. Instead of storing the roller exactly concentrically in the housing, one can also proceed according to FIG. 3 so that the roller B is eccentrically stored and the liquid is introduced at those points on the circumference in which the greatest distance between the roller and the housing is present , and that the pressure increase is measured approximately at that point at which there is the smallest clearance between the roller and the housing.
Claims (3)
Publications (1)
Publication Number | Publication Date |
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DE283732C true DE283732C (en) |
Family
ID=539282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT283732D Active DE283732C (en) |
Country Status (1)
Country | Link |
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DE (1) | DE283732C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2953016A (en) * | 1956-06-20 | 1960-09-20 | Joseph C Miner | Viscosimeter |
-
0
- DE DENDAT283732D patent/DE283732C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2953016A (en) * | 1956-06-20 | 1960-09-20 | Joseph C Miner | Viscosimeter |
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