Measuring Equipment » Bubble Pressure Tensiometer MPT C

Technical data

• Applications
• Advantages
• Method
• Technical Data

Measured value		Dynamic surface tension, Fainerman-method
Measuring methods		Constant flow, phased flow changes
- Resolution	mN/m	0.1
Measuring range of surface tension	mN/m	10 to 100
Dynamic range	ms	1 to 2000
Monitoring mode "constant flow"	min.	1 to 60 and more
Temperature range (sample)	°C	5 to 85
Temperature measurement		Digital (optional)
- Resolution	°C	0.1
- Precision	°C	±0.5
Display	mm	320 x 240 graphic display, 11 x 40 characters
Display modes		Tabular, graphic, surface tension as a function of the surface age (t, Log t)
Selection of measuring mode		Menu-controlled
Parameter input		Menu-controlled
Sample description		Numerical
Measuring point distance mode "constant flow"	min.	Selectable
Measurement value		Max. 50 results with date and time
Duration of experiment	min.	3 to 20 (depending on the measuring point of density)
Interfaces		RS 232
Documentation		Printer, PC (optional)
Data transmission software		For PC running WINDOWS 98 and higher (optional)
Weight	kg	Approx. 7.0
Dimensions (WxDxH)	mm	280x250x280
Power supply	V	90 to 264

Output of the measured values is optional via a printer or a data transmission software on the PC via the RS 232-interface. The measurement and the documentation of the temperature in the sample can also be carried out by means of an optional digital temperature probe. In addition to the proven PVDF-coated glass capillaries, steel capillaries (such as for highly alkaline samples) are available.

Standard accessories

• Two glass capillaries
• Set of beakers to take samples
• Humidifier

Further accessories

• Digital temperature probe for measuring in the sample
• Data transmission software for PC under WINDOWS (optional)
• Double-walled thermostating vessel
• Diverse types of capillary
• Protocol printer
• Membrane pump for capillary rinsing
• Online flow cell

Measuring standards

• ASTM D 3825