Portable viscometer and method of manufacturing capillary tube for measuring viscosity

Patent metadata

Field	Value
Publication number	US-2016223448-A1
Application number	US-201615013926-A
Country	US
Kind code	A1
Filing date	Feb 2, 2016
Priority date	Feb 3, 2015
Publication date	Aug 4, 2016
Grant date	—

Abstract

Present disclosure provides a portable viscometer including a body and a measuring unit disposed on one side of the body. The measuring unit includes a capillary tube detachably attached to the measuring unit, and a first sensor and a second sensor, the first and second sensors being disposed adjacent to the capillary tube and vertically spaced apart from each other, and the capillary tube includes a bead therein. The bead may be fixed on the inner surface of the capillary tube by a fixing compound which is soluble in a fluid to be measured.

First claim

What is claimed is:

1 . A portable viscometer comprising:
a body; and a measuring unit disposed on one side of the body, wherein the measuring unit comprises:
a capillary tube detachably attached to the measuring unit; and
a first sensor and a second sensor which are disposed adjacent to the capillary tube including a bead therein.

2 . The portable viscometer of claim 1 , wherein the capillary tube has an inner diameter of 0.9 to 1.1 mm.

3 . The portable viscometer of claim 1 , wherein the bead has a diameter of 0.8 mm.

4 . The portable viscometer of claim 1 , wherein the bead is a spherical metal.

5 . The portable viscometer of claim 4 , wherein the bead is a magnetic material.

6 . The portable viscometer of claim 1 , wherein the bead is fixed on the inner surface of the capillary tube by a fixing compound.

7 . The portable viscometer of claim 6 , wherein the fixing compound is soluble in a fluid to be measured.

8 . The portable viscometer of claim 7 , wherein the fixing compound includes at least one of bovine serum albumin, sodium hydroxide, sodium chloride, sodium citrate, sodium acetate, potassium phosphate, potassium nitrate, glucose, or lactose monohydrate.

9 . The portable viscometer of claim 1 , wherein the first sensor and the second sensor each include a photo interrupter or a magnetic sensor.

10 . The portable viscometer of claim 1 , wherein the body comprises a display and a controller.

11 . The portable viscometer of claim 1 , further comprising a cradle.

12 . The portable viscometer of claim 11 , wherein the cradle is capable of adjust an angle by which the viscometer is inclined from a vertical line normal to a horizontal plane.

13 . A method of manufacturing a capillary tube for measuring viscosity, the method comprising:
injecting a fixing compound in the capillary tube; placing a bead in the fixing compound; and freeze-drying the capillary tube.

Assignees

• Electronics & Telecommunications Res Inst
• Korea Inst Oriental Medicine

Inventors

• Kim Wan Joong
• Lee Myeong Soo
• Jung Moon Youn
• Lee Dae-Sik
• Lee Ju Ah
• Lee Ho Young

Classifications

• G01N11/04 Primary

  through a restricted passage, e.g. tube, aperture · CPC title

• G01N11/12 Primary

  by measuring rising or falling speed of the body; by measuring penetration of wedged gauges (G01N11/16 takes precedence) · CPC title

• G01P3/66

  using electric or magnetic means (G01P3/80 takes precedence; measuring short time intervals G04F8/00, G04F10/00) · CPC title

• G01N2011/0086

  magnetic properties · CPC title

• G01P3/68

  using optical means, i.e. using infrared, visible, or ultraviolet light (G01P3/80 takes precedence {; by reflection of waves G01S17/58}) · CPC title