Abstract:
본 발명은 점도 측정대상 유체 내에서 낙하하는 낙하체의 속도에 따라 점도를 측정하는 휴대용 점도 측정 장치에 있어서, 사용하기에 간편하고 미량의 점도 측정대상 유체로도 측정 가능한 휴대용 점도 측정 장치에 관한 것으로서, 일회용으로 교체 사용하는 모세관을 삽입한 후에, 모세관 현상에 의한 점도 측정대상 유체의 흡입을 레버로 손쉽게 조절하는 단순한 사용법으로 점도를 측정한다.
Abstract:
Mit einem Verfahren und einer Vorrichtung zur Untersuchung der Fließeigenschaften und der Viskosität von flüssigen Stoffen, insbesondere bei hohen Temperaturen von 1000°C und mehr, soll eine Lösung geschaffen werden, die den schwierigen Messbedingungen bei Messungen von Schlacken hoher Temperaturen gerecht wird. Dies wird verfahrensmäßig dadurch erreicht, dass aus einem in einem Hochtemperaturofen erhitzten Messgefäß über eine Auslaufdüse mit bekannten geometrischen Daten der zu überprüfende Stoff, z. B. flüssige Schlacken, in ein mit einer elektronischen Waage gekoppeltes Auffanggefäß ausgeleitet wird, wobei beim Auslaufen das Gewicht und die Fließzeit des auslaufenden Stoffes gemessen, aus dem Gewicht und der Dichte des Stoffes das Volumen berechnet und aus den erhaltenen Messerergebnissen die Fließeigenschaft des Stoffes bestimmt wird.
Abstract:
La presente invención tiene por objeto un viscosímetro que permite establecer de manera rápida el valor de la viscosidad del fluido en cuestión y la temperatura correspondiente a dicha viscosidad, y un procedimiento que permite determinar la viscosidad de un fluido donde el viscosímetro esta conectado a un microcontrolador que ejecuta todo un proceso de medida, calcula los valores de viscosidad y temperatura, genera unas señales de salida proporcionales a ellas y las envía a una unidad de control con una pantalla de visualización donde se muestran las variables anteriores.
Abstract:
A method and apparatus for determining the viscosity of a non-Newtonian fluid over plural shear rates using a single capillary tube exposed to a continuously decreasing pressure differential and while minimizing the effects of surface tension of that fluid during the determination. A particular application of this method and apparatus is also provided for determining the viscosity of the blood of a living being whereby the single capillary tube initially forms a portion of a hand-held unit that obtains a portion of the circulating blood of the living being; the filled capillary tube is then ejected into an analyzer where the blood therein is exposed to the continuously decreasing pressure differential. Data is generated from the movement of the blood through the capillary tube, due to the decreasing pressure differential, and the blood viscosity is determined from that data.
Abstract:
An apparatus and method for determining the viscosity of the circulating blood of a living being over plural shear rates caused by a decreasing pressure differential by monitoring the changing weight of the blood, or the changing level of a column of blood over time. The apparatus and method utilize a riser, a capillary tube, a collector and a mass detector, such as a precision balance or a load cell, for monitoring the changing weight of a sample of fluid that flows through these components under the influence of the decreasing pressure differential; alternatively, the apparatus and method use a column level detector to monitor the changing level of the column of blood over time.
Abstract:
A blood viscosity measuring system and methods for measuring blood viscosity monitors the change in height of two, oppositely-moving, columns of blood from the circulating blood of a patient and, given the dimensions of a capillary tube through which the blood flows, determines the blood viscosity over a range of shears, especially low shears. The system includes a tube set (disposable or non-disposable) that includes a pair of riser tubes, a capillary tube of predetermined dimensions that is coupled between the riser tubes (or that forms a portion of one riser tube) and a valve mechanism for controlling the circulating flow of blood from the patient into the riser tubes. Respective sensors monitor the movement of the columns of blood in each of the riser tubes and an associated microprocessor analyzes these movements, along with the predetermined dimensions of the capillary tube to determine the viscosity of the patient's circulating blood. An alternative system and method monitors only one of the two oppositely moving columns while detecting a single height position of the other one of the moving columns. From that data, along with the dimensions of a capillary tube through which the blood flows, the blood viscosity over a range of shears, especially low shears, is determined.
Abstract:
The invention relates to a method and measuring apparatus for measuring freeness. Freeness is measured with the help of an automatic data processing apparatus (30) so that the flow rate of a liquid draining from a measuring chamber (10) is measured using the measuring apparatus (12) until the flow rate is equal to or lower than a predefined flow rate.
Abstract:
An instrument (100) and a method for determining a coagulation characteristic of blood, a blood fraction or a control comprise a radiation-reflective surface (194), a first source (244) for irradiating the surface (194), and a first detector (242) for detecting radiation reflected from the surface (194). A cuvette (101) holds a sample (514) of the blood, blood fraction or control the coagulation characteristic of which is to be determined. The cuvette (101) has two opposed walls (506, 508) substantially transparent to the source (244) radiation and reflected radiation. The first source (244) and first detector (242) are disposed adjacent a first one (508) of the two opposed walls (506, 508) and the radiation reflective surface (194) is disposed adjacent a second (506) or the two opposed walls (506, 508).
Abstract:
A viscosity measuring apparatus is disclosed. The apparatus comprises a removable viscosity testing module and a viscosity testing apparatus. The removable viscosity testing module comprises a ducting arrangement for retaining and conveying a fluid sample to be tested. The ducting arrangement comprising a first portion for receiving the fluid and a second portion fluidly connected to the first portion. The viscosity testing apparatus further comprises means for causing the fluid to pass along the ducting arrangement between the first portion and the second portion; said means may be part of the viscosity testing module or part of the viscosity testing apparatus, or both. The ducting arrangement comprises a first reference point, and a second reference point disposed downstream of the first reference point, the first and second reference points being separated by a fixed, calibrated distance along the ducting arrangement. The apparatus further comprises detecting means for detecting when the fluid reaches at least one of the first and second reference points, and a timer for determining the time taken for the fluid to pass from the first reference point to the second reference point.