| 摘要 |
PURPOSE:To measure viscosity stably and continuously with high accuracy over a wide measurement range by transmitting the rotation of a shaft to an internal cylinder arranged concentrically with an external cylinder in a liquid through a twisting device. CONSTITUTION:The constant rotation output obtained by reducing 13 the speed of the rotation of a motor 12 to a prescribed rotating speed is transmitted to the internal cylinder 3 through the twisting device 18 through an airtight material 10 provided at the position where the shaft 4 penetrates a duct 1. The upper part of the internal cylinder 3 is opened and a flow hole is formed in the bottom surface; and the cylinder 3 is held by the device 18 at the center position of rotation to operate as a rotor and viscous torque of the fluid by rotation is generated on the peripheral surface, so that the cylinder rotates while being rotated and displaced by an angle where this torque balances with the reaction of the device 18. When 1st metallic members 7 provided to both ends of the device 18 and a 2nd metallic member 8 having a prescribed angle to the member 7 approach a detector 11 respectively, a time interval signal is generated and the quantity of displacement between the opposition position signal between the members 7 and 8 settled at the time of the stop of the rotating shaft 4 and an opposition position signal at the time of stationary rotation and viscosity is found from the quantity by unit conversion.
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