DEVICE FOR ULTRASONIC TESTING OF BIOLOGICAL LIQUIDS Russian patent published in 1995 - IPC

FIELD: ultrasonic instrumentation engineering. SUBSTANCE: device has case accommodating measuring chamber made in the form of truncated cones equal in height and connected around the edges of the larger bases, ultrasonic transducers installed on the opposite walls of the chamber, heating element, temperature-sensitive element. Passage for filling-in of liquid to be tested is made in the case perpendicularly to the axis of the transducers; the relations between chamber volume V, chamber length d₁ and d₂ diameters of bases of truncated cones are determined by expressions L/d₁≅ 1,, 2, 0,5L ≅ (d₂-d₁) ≅ L; V ≅ 0,1 cm³ EFFECT: enhanced accuracy of measurements and widened efficiency. 4 dwg