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Bubble Pressure Tensiometer BP100  

รหัส : BP100
รุ่น : Bubble Pressure Tensiometer BP100
รายละเอียดย่อ :
Printing – bonding – spraying – cleaning:

processes such as these require surfactants that are already effective in fractions of a second – and an instrument that can record their effectiveness. The Bubble Pressure Tensiometer BP100 determines the dynamic surface tension as a function of the surface age. Thus the instrument provides information about wetting and drop formation in rapid processes.
รายละเอียดทั้งหมด :

Features of the Bubble Pressure Tensiometer BP100

  • Measurement of the dynamic surface tension at constant or variable surface age
  • Wide range of surface age:
  • 5 ms (high dynamic) up to 100 s (almost static)
  • Fully automatic measuring process by software controlled immersion of the capillary
  • Determination of the adsorption and diffusion coefficient
  • Integrated compressor - no compressed air supply necessary

 

Bubble Pressure Measurement with the BP100

A software-controlled flow of air emerging from a capillary produces air bubbles in the sample. A high-precision pressure sensor determines the maximum pressure during bubble formation, from which the surface tension is calculated. Thanks to its built-in compressor the instrument does not need an external compressed air connection. Thermostatted measurements are possible without any problems.

Scans with an almost unlimited resolution over a wide range of surface ages are controlled automatically by the LabDesk software. In addition to the time-dependent surface tension, the measurement also supplies the equilibrium value according to Hua & Rosen. Diffusion and adsorption coefficients can be calculated from surfactant concentration series – these are important parameters where the mobility of surfactants is concerned. Measurements at constant bubble ages allow further insights, e.g. for concentration or temperature comparisons.

After a minimal preparation period the measurement is carried out fully automatically up to data output in the form of a plot. With a mouse-click measuring parameters, results and evaluations appear in a comprehensive report. Thanks to the LabDesk™ software platform for all KRÜSS tensiometers data from other instruments can be included.

 

Application

  • Surface-active agent development
  • Optimization of spraying processes
  • Development of detergents and cleansing agents
  • Optimization of coating and printing processes
  • Electroplating bath concentration control

  

Technical Data of Bubble Pressure Tensiometer BP100

Measuring range

 

SFT (1)

10 ... 100 mN/m

Temperature

-10 to 100 °C

Resolution

 

SFT

± 0.01 mN/m

Temperature

± 0.01°

Surface age (1)

5 ms - 100 s

Interfaces

USB, RS232C

Power consumption

max. 30 W

Power supply

100 – 240 V AC;
47 – 63 Hz

Weight 

15 kg

Dimensions

300 × 540 × 320 mm

   

(1) depending on capillary and liquid

 

 

List of accessories

 

BP100

For informationen on accessories, please open the list

Complete list

 

Measuring Methods

  • Bubble Pressure Method
  • Measurement of surface tension at constant surface age
  • Measurement of surface tension at any surface ages from 5 to 100,000 ms

 

Video



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