PRECISE
Measures the dynamic surface tension using the bubble pressure methode
High dynamic bubble lifetime range: 30 ms…100.000 ms
Precise readings taken with the patented and optimized capillary at any depth
Automatic calibration with integrated temperature compensation in water
FLEXIBLE
Wide range of functions with different measurement modes:
AUTO MODE:
Automatic measurement of dynamic surface tension curves through the whole bubble lifetime range
Optimal for the analysis of processes and chemicals
Characterization of the wetting behavior of surface active agents
ONLINE MODE:
Continuous measurement of adjustable period without a drift of bubble lifetime
Automatic measurement of temperature dependencies
Product description
The tensiometer science line t60 measures the dynamic surface tension of liquids by using the bubble pressure method. It can be used mobile, and is especially suited as a laboratory tensiometer for research and development.
In Online-Mode specific bubble lifetimes (surface age) can be predetermined, which is desirable when monitoring surfactants or measuring concentrations. In Auto-Mode the instrument sweeps a range of varying bubble frequencies, which is profitable for quickly characterizing surfactants ("Fingerprint of Surfactants").
The measured data can be immediately or continuously transferred to a computer using the tensiometer-software SITA online V3.1. The science line t60/2 also offers the possibility of permanently saving all measured values in the tensiometer, allowing the information to be transferred to a computer at a later time.
ADVANTAGES
Precise
direct temperature monitoring of the sample liquid
precise readings taken with the capillary at any depth
long-term measurements up to several days without measurement drift
Fast and efficient dynamic surface tension measurement
fast and simple set-up
ready to use within less than one minute
simple handling and use
automatic calibration with water
Flexible
built-in memory
adaptable to several applications
convenient data processing: Windows Software "SITA-online"
Mobile
a good travel companion in its own suitcase
no external air pump necessary
Measuring principle
The laboratory tensiometer science line t60 is based on the bubble pressure method and measures the whole dynamic range of measuring tasks of surface tension. This is done by pumping air through a capillary into the liquid to be analyzed. The pressure within the bubble is proportional to the surface tension.
Using a very short bubble lifetime (measurements made in a highly dynamic range) high concentrations can be efficiently differentiated. In contrast, with a long bubble lifetime one can take measurements in the semi-static range i.e. detect low concentrations of surfactants.
Technical data
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Surface Tension
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Measuring range
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10...100 mN/m (dyn/cm)
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Resolution
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0.1 mN/m (dyn/cm)
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Bubble Lifetime / Surface Age
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Controlled range
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30...100,000 ms
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Resolution
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1 ms
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Liquid Temperature
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Measuring range
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-100...150 °C
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Resolution
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0.1 K
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Power Supply
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Mains adapter
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100...240 V
47...63 Hz
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Battery
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4 x Mignon 1.5V
(Size AA, LR6)
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Max. power consumption
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3.6 W
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Interface, Storage, Dimensions, Weight
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RS232 /USB - Interface
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data transfer
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Display
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grafic, illuminated
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Storage
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16 MByte
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Weight
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7.9 kg complete with suitcase
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Laboratory Tensiometer for Researchand Development