Bubble Pressure Tensiometer T15

The SITA Pro Line T15 is an all-round bubble pressure tensiometer.  The instrument has a comprehensive bubble lifetime range from 15 ms to 20,000 ms for measuring dynamic surface tension and will automatically adjust the chosen bubble exactly without readjustment by the operator.

Using patented, cutting edge technology, the instrument is developed from the maximum bubble pressure technique to provide fast and reliable dynamic surface tension, hydrostatic pressure, effective adsorption time, bubble lifetime and dead time measurements, making it the instrument of choice when studying, controlling and developing a wide range of processes e.g. surfactants, ink jet printing, coating technologies, foam and emulsions, detergents, pharmaceuticals, cosmetics, food technologies, environmental monitoring etc.

The measuring data can be stored in the tensiometer, transferred to a computer or printed and the SITA-Lab Solution Software also offers visual presentation, evaluation and further processing of measuring data.

 

Measurement principle
Measurements are taken of the air pressure inside a capillary tube as air is bubbled through it whilst it is immersed in a liquid sample.  As the pressure increases in the capillary tube bubbles are eventually pushed out into the liquid sample, the maximum pressure is achieved when the bubble shape is hemispherical, after which the bubble quickly grows and leaves the capillary. The force exerted on the bubble is determined by the surface tension of the liquid. More detailed investigation of liquid properties can be achieved by monitors bubble lifetime and dead time.

The Bubble Tensiometer Pro Line T15 measures:

  • Auto-Mode   For analysing the dynamic behaviour of the surface tension of surfactant containing liquids. Wetting characteristics of surface active liquids can also be analysed and the optimal bubble lifetime for the concentration control can be easily determined by the operator.
  • Single-Mode   Gives the user a quick measurement of a single surface tension value at a pre-determined bubble lifetime for a reliable control of the surfactant concentration of process liquids.
  • Online-Mode   Used for a continuous monitoring of process liquids and for determining the temperature dependency of the surface tension of liquids.

Packing List: Pro Line T15 Bubble Tensiometer; carrying case, capillary PEEK (2 pieces) power supply, USB-cable, stand and instrument fastener, sample vessel (2 pieces), operating instructions & calibration certificate.

Surface Tension
Measuring range (mN/m)     10…100
Resolution (mN/m)     ± 0.1
Bubble Lifetime
Controlled range     15ms – 20,000ms
Resolution     1ms
Power Supply
Mains adapter     100-240V; 47-63Hz
Battery (Lion, integrated)     3.6V/2000 mAh
Max. power consumption     2W max.
Interface, Storage, Dimensions, Weight
USB-Interface     data transfer, power supply & charging of battery
Display     124 x 168 pixel, illuminated
Storage     3 memory areas for Single, Auto & Online measurements
Dimensions (WxHxD)     75 x 168 x 35mm
Weight of instrument     270g

Enquire

Order CodeDescription
15-1103SITA Pro Line T15 Bubble Tensiometer

Enquire

Order CodeDescription
15-2103SITA-LabSolution Basic Version Software
15-2104SITA-LabSolution Expert Version Software

Capillaries

Type I PEEK – easy manual cleaning for paints and varnishes

Type II PEEK – for monitoring process liquids

Type III Glass – for agressive liquids

Disposal capillaries PTFE – for special cases

(Please contact us for further information).