Surface and interfacial tensiometer

Surface and interfacial tensiometer

A professional measurement/determination instrument specifically designed to measure the surface tension value of liquids. The surface tensiometer achieves the measurement of liquid surface tension values through principles such as the platinum plate method, platinum ring method, maximum bubble method, pendant drop method, drop volume method, and drop weight method. This model utilizes mechanical principles, where a corrosion-resistant platinum ring and platinum plate come into contact with the liquid, and the maximum force value is converted into surface tension. While measuring the instantaneous surface tension of the liquid, software technology can be used to record the surface tension value as it changes over time.
The force acting on the surface of a liquid that tends to reduce its surface area is called liquid surface tension. It is caused by the existence of a thin layer at the interface between the liquid and the gas, known as the surface layer. The molecules in the surface layer are more sparse than those in the interior of the liquid, and the distance between molecules is slightly larger than in the interior, with the intermolecular interaction manifesting as an attractive force. Much like how pulling a spring apart can cause it to exhibit a tendency to contract.
1. It adopts an imported high-precision mechanical sensing module, paired with a high-precision data transmission and analysis system, ensuring high test data accuracy and repeatability.
2. It utilizes a stepper motor in silent drive mode, combined with a precision screw lifting axis, resulting in minimal vibration during the testing process, which has no impact on the sensor readings. The exquisite design guarantees testing accuracy.
3. It does not use the two-point calibration method to calibrate the instrument, but insists on using the scientific gravity method to calibrate the sensor readings. Combined with platinum rings and platinum plates made using new processes, it ensures the accuracy of the test results.
4. The exterior design features a robust support structure, effectively preventing cracking and damage during instrument transportation.
5. The high-speed microcontroller designed with imported chips features fast operation speed and high precision. The enhanced filtering function for sensor data acquisition further improves the accuracy of sensor readings.
6. The further improved structural design of the cantilever beam and electromagnetic force sensor enhances the sensor's anti-interference capability.
7. The high-quality displacement sensor features good linearity, sensitive output signals, and accurate impedance matching, ensuring the precision of displacement measurement.
8. The instrument is equipped with a trigger-stop function. During the platinum plate testing process, it automatically starts and stops, automatically calculates the wetting height, and accurately calculates values through data conversion.
9. The software comes with built-in correction formulas for testing, automatically applying parameter corrections without the need for manual adjustment.
10. It features a color LCD touchscreen display, allowing parameter settings, data reading, and curve recording to be completed directly on the screen. It can also be paired with a small thermal printer to print test results directly, making it extremely convenient to operate.
11. Through testing and calculation models, it can measure medium-to-high viscosity liquids, enabling sample testing for specialized industries such as ink, paint, and petroleum.
12. The lifting platform can be connected to an external super-thermostatic bath for temperature control, or alternatively, use electric heating and Peltier cooling for temperature control.
13. With its compact design, the instrument can directly read the internal temperature of the liquid.