Interfacial Surface Oil Tension Tester
Fully automatic oil interface tensiometer
Surface Oil Tension Meter application
Automatic oil surface tension tester apply to standard test ASTM D971 ,it can test kinds of liquid surface tension and boundary surface tension.Based on ring method (platinum ring method), the surface tension (liquid gas interface) and interfacial tension (liquid liquid interface) of various liquids are measured. This method has the advantages of simple operation and high accuracy and is widely used. It is widely used in power, petroleum, chemical, pharmaceutical, food, teaching and other industries.
Inter molecular Forces formed liquid surface tension.Numbers of tension reflect on liquid sample's physics and chemical properties, it is one of the most important index to product quality.
HOPU offers a range of Surface Tensiometers that are widely used in education, research, process control and quality control for measuring Surface Tension.
Function
1.Large color LCD screen, English prompt, menu operation, fully automatic testing.
2.Automatic temperature compensation within 25℃ eliminates the influence that the temperature imposes on the tension value.
3.Functions of auto correction, auto testing, calculation, results displaying, and storage under power off circumstance.
4.The main body is equipped with hurricane globe, which lessens the influence outer matters impose on testing results.
5.Automatic lift of the lift platform ensures a stable environment and high accuracy.
6.It adopts enclosed magnetic pot type sensor and multi-point calibration of uniform space technology, which improves the repeatability and reproducibility of the results.
7.It can work independently and can also realize network management via connection with laptops or microcomputers through USB interface(optional).
8.Tester program can be updated accordingly if related national standard revised.
Main technical features
The instrument adopts large LCD screen and blank button, so it is automatic, reliable, and simple and with good repeatability. Turn on the instrument and operate the instrument as per the prompt of menu, and you can complete the test as per the prompt.
The instrument has function of automatic temperature compensation, clock control, printing, and automatic average value calculation. It can connect to a computer through RS232 interface. You can also send the test data to a handheld computer for analysis. It is the best choice to make determination for interfacial tension test.
Specifications |
Measuring range: | 0-200mN/m |
Accuracy: | 0.1%( test result)±0.1 mN/m |
Precision: | 0.1mN/m |
Sensibility: | 0.1mN/m |
Mains voltage: | AC220V±20% 50HZ±10% |
Maximum power dissipation: | 20W |
Suit ambient temperature: | 10~30℃(25℃the best) |
Suit ambient humidity: | ≤85% RH |
Overall dimensions: | 200×300×330(mm) |
working principle
When the platinum ring is pulled up from the "liquid-gas" interface or the "liquid-liquid" interface, a circular liquid column film will form under the platinum ring. As the ring continues to rise, the liquid column film ruptures. The maximum force value detected by the electromagnetic force balance sensor in the medium can be converted into a tension value by the following formula.
M = mg / 2L L = Platinum wire perimeter
The amount of force measured by this method is affected by the following factors:
1. The average radius of platinum wire ring and the radius of platinum wire.
2. The density difference of "liquid-gas" or "liquid-liquid".
3. The purity of the liquid and electrolyte impurities will seriously reduce the tension value.
4. The temperature of the environment.
Because the liquid column formed at the platinum ring is not cylindrical, a correction factor F must be introduced. The calculation formula for the correction factor F given by Zuidema and waters
Your inquiry is warmly welcomed!
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www.hopufiltration.com
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Branch 2: www.hopuoilpurify.com
