SINKING-FLOATING COMPARISION DENSIMETER

The utility model discloses a sinking-floating comparison densimeter which belongs to a device for measuring glass density, non-hole solid density and the apparent density of the known stomata solid. The utility model comprises a temperature raise controller which is formed by a water bathtub, a warming part, a stirring part and a temperature measuring part, wherein, the temperature raise controller is connected with a heater; the rate of temperature raise is regulated by a bidirectional controlled silicon triggering circuit; the water bathtub is additionally provided with a sleeve barrel, and an upper end of the water bathtub is covered with a cover plate; the outside of the sleeve barrel of the water bathtub is covered with a metal cover to form a heat preserving system; an inner bore of the heater is provided with an alternating current series existed motor, and bidirectional controlled silicon pulse triggering circuit of a speed regulating controller is connected with the motor to regulate the rotating speed of the motor; a permanent magnet and rotors respectively arranged are arranged on a shaft of the motor to form a magnetic force stirring device; a digital display system for measuring temperature is connected with a thermosensitive probe to display the measured temperature value. The utility model has the advantages of reasonable structure design, stable performance and high measure precision and accuracy.