TENSIOMETER - Tracker

The Tracker is an automated drop tensiometer which can measure variations in surface tension or interfacial tension over time. The instrument can also measure contact angle of a liquid against a solid. 

The control unit of the instrument can oscillate the drop or bubble being observed to determine complex elastic modulus, including the elastic and viscous components. By choosing optional lenses, lower limit of interfacial tension measurement can be less than 0.1 mN/m.

The Tracker is available in 3 different versions:

• Tracker H
• Tracker S
• Tracker M

Tracker-H

This is the most versatile tensiometer from Teclis.The Tracker H is reinforced to allow use of various pressure chambers. The electronics cabinet contains a power supply to operate heaters in the pressure chamber and a readout for set and actual temperature. Requires a computer (with minimum 2 Gb RAM and one free PCI slot, full height) to run software.

Features 

• Surface and interfacial tension measurement of liquid/liquid or liquid/gas;
• Forming Bubbles or drop automatically;
• Dynamic contact angle measurement;
• Calculated surface elasticity or rigidity by data analysis of measurement;
• Executing the measurements with heavier sample chambers up to 200°C at pressures over the range from 0.1bar to 200 bar (Optional);
• Controlled by WINDROP software;
• Comparing the results of the different measurements easily;
• Exporting measurement results and switching to spread sheet type software as Excel.

Tracker-S

The Tracker S is not reinforced to allow use of the pressure chambers. The electronics cabinet does not contain a power supply to operate heaters in the pressure chamber or a readout for set and actual temperature. Otherwise, the Tracker S has the same features, capabilities, and accessories as the Tracker H. It is possible at any time to upgrade a Tracker-H.

Features 

• Surface and interfacial tension measurement of liquid/liquid or liquid/gas;
• Forming Bubbles or drop automatically;
• Dynamic contact angle measurement on solid;
• Calculated surface elasticity or rigidity by data analysis of measurement;
• Controlled measurement temperature facility by a circulating bath (optional) over the range from 15-80°C;
• Controlled by WINDROP software;
• Comparing the results of the different measurements easily;
• Exporting measurement results and switching to spread sheet type software as Excel.

Tracker-M

The TRACKER-M is a less automated instrument than the S or H versions. Drops or bubbles must be formed manually with the TRACKER-M. The TRACKER-M is not reinforced to allow use of the pressure chambers. However, the TRACKER-M still allows measurement of surface or interfacial tension for drops or bubbles manually, as well as measurement of contact angle on solids manually. It is possible at any time to upgrade a TRACKER-S.

Features 

• Surface and interfacial tension measurement of liquid/liquid or liquid/gas;
• Forming Bubbles or drop manually;
• Contact angle measurement on solid;
• Controlled measurement temperature facility by a circulating bath (optional) over the range from 15-80°C;
• Controlled by WINDROP software;
• Comparing the results of the different measurements easily;
• Exporting measurement results and switching to spread sheet type software as Excel.

What can the TRACKER measure ?

• Surface or interfacial tension
• Interfacial elasticity
• Surface rheology
• Components of cohesion of pure solvents
• Adhesion in liquid-liquid or liquid-solid systems
• Absorptivity of a solid surface (contact angle)
• Characteristics of a surfactant
• Adsorption of surfactant onto a powder