Measuring Equipment » Bubble Pressure Tensiometer MPT 2

Advantages

• Applications
• Advantages
• Method
• Software
• Technical Data

Technical features

• No dependence on response times of the pressure sensors
• Very narrow capillaries generate stable bubbles with high internal pressure
• Viscosity and immersion depth of the capillaries have very little influence on the measurement
• High resolution pressure sensors allow continuous measurement of the maximum bubble pressure and the gas flow
• Separate sensors record the bubble distance. This allows the true surface age of the bubble to be calculated using the Fainerman method

Simple operation

• Quick capillary replacement and cleaning
• Thermostating with LAUDA thermostats
• Sample quantities in the millilitre range are sufficient, uses easy to exchange, commercially available sample beakers that are easy to clean

PC functionalities

• Complete PC control under Windows
• Immediate output of surface tensions, gas flow, internal bubble pressure, and bubble time into tables and graphs
• Second measuring mode for long adsorption times
• Sweep mode to record measuring curves in only a few minutes

Gas flow measurement & adjustable pump

• Option to measure at increasing, decreasing, or constant flow
• Determination of surface age
• "Stop-Flow" mode for very long bubble times
• No gas connection required

Large buffer volume between measuring capillary and pressure sensor

• Pressure is stable and always equal to the maximum bubble pressure
• Virtually delay-free and yet precise pressure measurement

Bubble detection with internal sensors (acoustic or electric)

• Bubble detection independent of pressure fluctuation
• Reliable individual bubble recording