Capillary Tube Viscosimeter.
Capillary Tube Viscosimeter
The apparatus allows Poiseuille flows to
be investigated and enables precise measurements to be made of the
dynamic viscosities of liquids maintained at constant temperature, using
the readings of a single pressure and a recorded time interval.
The liquid whose flow characteristics are to be investigated is placed in a removable thermostatically controlled vessel which may be pressurised. The vessel supplies a capillary tube which is also thermostatically controlled and interchangeable. The level of pressurisation of the vessel and the temperature of the liquid can be continuously varied as required ; the liquid is continuously stirred to ensure that its temperature is uniform.
From the measurement of flow rate and of loss of head along the capillary tube, the following may be investigated using the viscometer :
The following instrumentation is provided with the apparatus :