DataPhysics – SVT – Spinning Drop Video Tensiometer

The Spinning drop video tensiometer SVT 25 is a compact optical measuring instrument for the determination of low to ultra-low interfacial tensions and rheological interface properties. Highest precision and reproducibility of the measuring results is guaranteed by a well-established measuring technique and first grade mechanical and optical components. Due to state-of-the-art electronic components the SVT 25 can be operated intuitively via the TP 50 control panel.

Key Features

Spinning Drop Video Tensiometer

• Measurement of low to ultra-low interfacial tensions based on the contour of spinning drops according to models by Vonnegut, Cayias-Schechter-Wade or Young-Laplace
• Highly dynamic measurement drive with 0 … 20000 rev/min
• Oscillation measurements with oscillation periods of 0.5 s …∞ and max. acceleration of 500 rev/s2
• Motorised tilting table
• Fast 6.5-fold zoom lens with integrated continuous fine focus
• Motorised movable optics for automatically following moving drops
• High-performance camera with USB 3 interface, 2/3″ sensor, max. 2048 x 1088 pixel, max. 3250 frames/s
• Precise, fast and easy to use capillary exchange system
• LED-lighting with strobe function and adjustable slit diaphragm
• Temperature controlled measuring cells for temperatures ranging from -30 °C to 180 °C
• Sspecial capillary for measuring water-based solutions at up to 130 °C
• Automatic calibration function for correcting optical distortions caused by the capillaries (cylindrical lens effects)
• TP 50 control panel with touch screen and precision control wheel