Automatic Surface Tension Measurement Tensiometer by Du Nouy Ring Method

Product Description

Automatic Surface Tension Measurement Tensiometer by Du Nouy Ring Method
Introduction:
The Du nouy ring method is a traditional test method, which takes about 70 years. Using a platinum wire with a diameter of 0.37 mm made into a ring with a circumference of 60 mm. During the test, the platinum ring is immersed in the liquid surface (or two non-mixed interfaces) for 2-3 mm, and then the platinum ring is slowly lifted upward, and a film is formed between the ring and the liquid surface. The membrane has a pull-down force on the platinum ring, measuring the maximum force applied to the ring during the entire platinum ring lift process, and then converting it to a true surface (interface) tension value.
The Du nouy ring Tensiometer is based on Platinum Ring Method Principle to achieve accurate measurement of liquid surface tension value. The instrument integrates a number of advanced technologies, widely used in chemical, petroleum, electric power, scientific research, railways and other industries.
Main Features:
1. Full-automatic measuring the sample tension value using a powerful new generation of microprocessor.
2 . 10-inch 65K (resolution 800*600) color touch LCD display, Chinese and English prompt menu operation.
3 . The surface of the appearance is treated by electrostatic spray, which is corrosion-resistant and easy to clean.
4 . With 25ºC automatic temperature compensation function, the effect of temperature on the measured tension value is solved.
5 . The instrument automatically zeros, automatically measures, calculates, displays experimental results, and has a power-down storage function.
6 . The lifting platform of the instrument is automatically raised and lowered, stable, low noise and accurate.
7. The use of a magnetic tank closed sensor with equal-interval multi-point calibration improves the repeatability and reproducibility of measurement results.
Reference Standards:
1. GB/T6541-1986 Petroleum products -- Mineral oils-Determination of interfacial tension of oil against Water by Ring Method.
2. ISO 6295-1983 Petroleum products -- Mineral oils-Determination of interfacial tension of oil against water-Ring method.
3. JB/T 9388-2015 Interface tensiometers -- Technical specification.
4. ISO1409-1995 Plastics/rubber -- Polymer dispersions and rubber latices (natural and synthesis)-Determination of surface tension by the ring method.
5. SH/T1156-2014 Determination of synthetic latex surface tension.
6. GB/T5549-1990 Surface active agents -- Determination of surface tension by drawing up liquid films.
7. ISO 304-1985 Surface active agents -- Determination of surface tension by drawing up liquid films.
8. ISO 4311-1979 Anionic and non-ionic surface active agents -- Determination of the critical micellization concentration -- Method by measuring surface tension with a plate, stirrup or ring.
9. GB/T 22237-2008 Surface active agents--Determination of surface tension.
10. GB/T 18396-2001 Natural latex--Ring method for measuring surface tension.
11. ISO14090-82, ASTM D1417, EN14370, ZB2025-93, GB2960-82, etc.

Main Specifications:

Display method	10 inch 65K (resolution 800*600) color touch LCD display
Measurement method	Principle of platinum ring method
Platinum ring radius	R9.55 platinum wire r0.3
Measuring range	0-400mN/m
Sensitivity	0.01mN/m
Accuracy	±0.01mN/m
Self-checking function	failure automatic diagnosis
Temperature compensation	auto temperature compensation
Power consumption	<40W
Dimensions	440mm*190mm*350mm
Service environment	Temperature 10ºC-40ºC, humidity<80%
Power supply	AC220V±10% 50HZ±2.5HZ
Weight	About 7.5kg

Du nouy ring Tensiometer in our laboratory!

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