What are the structural characteristics and requirements of the capillary viscometer for hydraulic oil filter
2018/5/17 Viewers:
Acording to the GB265 method, a capillary viscometer for measuring kinematic viscosity is described.
(1) the positive branch of the viscosity scoring head and the two part of the wide pipe. In the middle, the U - shaped elbow is linked. The basic points are measuring balls, capillary tubes and storage devices. As shown in Figure 2.1, the ball is located at the top of the capillary and the reservoir is located on the side of the wide tube, and its horizontal position is lower than the capillary, causing the liquid to flow out under the static pressure of the liquid column in the viscometer. The lower end of the wide tube is flat and has a wide cross section. When the liquid is flowing, the fluctuation of the liquid column is smaller and smaller, and the error caused by the change of the height of the liquid column is reduced. The upper branch of the wide tube is for easy sampling. Determining the buffer ball above the ball ensures that the sample has enough volume and allows the liquid to absorb above the marking line so that it does not rush quickly to the upper end of the main bamboo.
(2) according to the capillary position, the viscometer is a straight tube viscometer, characterized by compact and Yi Hengwen.
(3) using this viscosimeter to determine the viscosity is based on the theoretical basis of the Poisson equation combined with viscosity and flow, and the results can be easily obtained, and more accurate results can be obtained.
(4) the measuring range mainly depends on the length and diameter of the capillary tube. If there is a small tube viscometer with different diameters, it can be used for measuring the wider viscosity.
(5) made of glass, it can be seen that liquid flows in the tube, which is easy to use and easy to wash. The specific requirements for the Ping viscometer include the following points: (1) the cross bearing surface of the capillary should be round, and the diameter of the whole length should be in the same spoon, and no expansion, skew and bending can be seen. (2) all welds should be smooth and smooth from a wider part to a welded joint with narrow edges. (3) the ring marking must be clearly engraved on the plane perpendicular to the axis of the pipe, and no disconnection is allowed. (4) the capillary viscometer used in the GB265 method generally does not consider the correction of the end effect, but in order to reduce the error, the capillary must have enough length (100 m). (5) when the capillary is selected, the flow of the flow layer can still be obtained in addition to the liquid into the capillary and the Reynolds number is larger than the general value.
(1) the positive branch of the viscosity scoring head and the two part of the wide pipe. In the middle, the U - shaped elbow is linked. The basic points are measuring balls, capillary tubes and storage devices. As shown in Figure 2.1, the ball is located at the top of the capillary and the reservoir is located on the side of the wide tube, and its horizontal position is lower than the capillary, causing the liquid to flow out under the static pressure of the liquid column in the viscometer. The lower end of the wide tube is flat and has a wide cross section. When the liquid is flowing, the fluctuation of the liquid column is smaller and smaller, and the error caused by the change of the height of the liquid column is reduced. The upper branch of the wide tube is for easy sampling. Determining the buffer ball above the ball ensures that the sample has enough volume and allows the liquid to absorb above the marking line so that it does not rush quickly to the upper end of the main bamboo.
(2) according to the capillary position, the viscometer is a straight tube viscometer, characterized by compact and Yi Hengwen.
(3) using this viscosimeter to determine the viscosity is based on the theoretical basis of the Poisson equation combined with viscosity and flow, and the results can be easily obtained, and more accurate results can be obtained.
(4) the measuring range mainly depends on the length and diameter of the capillary tube. If there is a small tube viscometer with different diameters, it can be used for measuring the wider viscosity.
(5) made of glass, it can be seen that liquid flows in the tube, which is easy to use and easy to wash. The specific requirements for the Ping viscometer include the following points: (1) the cross bearing surface of the capillary should be round, and the diameter of the whole length should be in the same spoon, and no expansion, skew and bending can be seen. (2) all welds should be smooth and smooth from a wider part to a welded joint with narrow edges. (3) the ring marking must be clearly engraved on the plane perpendicular to the axis of the pipe, and no disconnection is allowed. (4) the capillary viscometer used in the GB265 method generally does not consider the correction of the end effect, but in order to reduce the error, the capillary must have enough length (100 m). (5) when the capillary is selected, the flow of the flow layer can still be obtained in addition to the liquid into the capillary and the Reynolds number is larger than the general value.
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