| 摘要 |
PROBLEM TO BE SOLVED: To obtain the capillary-type viscosimeter for two-point temperatures having the simple, compact configuration and the excellent thermal response. SOLUTION: The sample liquid at the approximately constant temperature is introduced into a container 1 at a small flow rate from a main flow path. In a first liquid-temperature viscosity measuring part 30, the sample liquid in the container 1 is made to flow into a flow path 2 with a quantitative pump 3 and guided to a first capillary 7. The differential pressure between both ends of the first capillary 7 is measured with a first differential pressure detector 8. The liquid temperature is measured with a first temperature measuring resistor 6. The absolute viscosityμ1 at the first liquid temperature is obtained with an operating BOX 17. The flow path 2 connected to the first capillary 7 is guided out to the outside of the container 1 and guided to a heat exchanger 14 in a second liquid-temperature viscosity measuring part 31. The sample liquid at the first liquid temperature undergoes heat exchange into the second liquid temperature. The sample liquid heat-exchanged to the second liquid temperature flows into a second capillary 9 contained in a heat insulating BOX 13. The differential pressure between both ends of the second capillary 9 is measured with a second differential pressure detector 10. The second liquid temperature is measured with a second temperature measuring resistor 11. The absolute viscosityμ2 at the second liquid temperature is obtained with the operating BOX 17.
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