Interfacial tension tester
Instrument introduction
This instrument is a special testing equipment for measuring surface tension, interfacial tension and liquid density. It strictly meets the requirements of many national and international standards and can be widely used in the detection of relevant indicators of petroleum products, surfactants, natural latex and other samples. Specific compliance standards include: GB6541-1986 "Petroleum product oil-to-water interfacial tension determination method" (ring method), GB/T22237-2008 "Surfactant, surface tension determination", GB18396-2001 "Natural rubber latex ring method for determination of surface tension", ISO 6295-1983 "Petroleum products, mineral lubricating oils, oil-to-water interfacial tension determination, ring method", etc.
Instrument principle
The core of this instrument adopts two classic measurement principles of platinum ring method and platinum plate method. Based on the mechanical measurement method of surface tension, the tension signal of platinum ring or platinum plate in contact with the sample liquid surface is captured by a high-precision sensor, which is accurately calculated by the system and converted into surface/interfacial tension value. Liquid density measurement adopts high-precision density sensing technology combined with a constant temperature control module to ensure the accuracy of density measurement. The constant temperature device uses a closed-loop temperature control system to stabilize and maintain the temperature required for sample testing, providing a stable environment for various index detection and ensuring the reliability and repeatability of measurement data.
Instrument features
1. Operation screen: equipped with a 10-inch large-screen touch screen, easy to operate and intuitive interface.
2. Supports two measurement methods: the platinum ring method and the platinum plate method can be selected arbitrarily for measurement.
3. Can measure the interfacial tension and density of the meter simultaneously: Integrate two measurement functions without additional equipment.
4. Fully automatic measurement, automatic lifting: The sample stage is automatically lifted and lowered, and the whole process is fully automatic without manual intervention.
5. Built-in printer: Built-in thermal printer, which can automatically print measurement results.
6. Large data storage capacity: Built-in large-capacity storage allows for long-term retention of large amounts of measurement data.
7. Built-in thermostat: high-precision thermostat module, which can precisely control the sample temperature.
Technical parameter display mode: 10-inch touch screen;
Measurement method: Measurement method: both platinum ring method and platinum plate method (standard platinum plate);
Measurement items: interfacial tension and liquid density;
Operation mode: automatic lifting of the sample stage, fully automatic measurement;
Tension measurement range: 2~ 500mN/m;
Tension accuracy: 0.1mN/m;
Tension resolution: 0.01mN/m;
Density range: 0~ 5g/cm3
Density resolution: 0.001g/cm3;
Temperature control range: 0~ 60 ℃
Temperature resolution: 1 ° C
Temperature control accuracy of constant temperature bath: 3 ℃;
Movement stroke: 0~ 75mm; Built-in storage: > 10000 pieces;
Printing method: standard built-in thermal printer;
Working temperature: 5 ℃~ 35 ℃;
Operating humidity: up to 80%;
Power AC: 220V5%, 50Hz/60Hz;
Power: 100W;









