LINKAGE MEASUREMENT FOR SURFACE TENSION, VISCOSITY AND DENSITY OF SOLUTION

摘要

PURPOSE:To repidly measure three physical properties - surface tension, viscosity and density of a solution with a single system, by arranging a means of moving the solution within a measuring tube, a means of detecting the liquid surface thereof within the measuring tube, a weighing means and further a time measuring means. CONSTITUTION:A specified amount of a sample solution is sampled into a beaker 3 and allowed to stand on an electronic balance scale 2. A motor 1 is started with a controller 12 to immerse a nozzle 4 at the tip of a measuring tube 5 with a heat- insulating jacket into the beaker 3. A suction valve 6 is opened to suck up the solution to the position of an upper limit liquid level sensor 10 of the measuring tube 5. Meanwhile, the time to the arrival of the liquid surface of the solution at the upper limit sensor 10 from a lower limit liquid level sensor 9 is measured to determine the viscosity thereof, while the density thereof is determined by the decrease in the weight of the thereof, while the density thereof is determined by the decrease in the weight of the solution in the beaker 3. Then, while the internal pressure of the measuring tube 5 is kept constant by a regulation valve 7, liquid drops is made to fall at the tip of the nozzle 4 to determine the surface tension thereof by measuring the weight of each drop.