Measures phase equilibrium parameters of various low-boiling pure substances/binary/ternary systems within -30~60℃, obtaining T, P, and gas-liquid phase compositions x, y under equilibrium states.

The VLE1000 Low-Temperature Phase Equilibrium Tester, developed based on the circulation analysis method, achieves system equilibrium by forcing two-phase flow through a liquid-phase circulation pump. It can sample and analyze gas and liquid phase samples by connecting to a chromatograph, featuring advantages such as high temperature measurement accuracy, wide pressure measurement range, and precise measurement. Combined with independently developed programs, it can realize automatic temperature control, automatic pressurization, automatic sampling, and data analysis. It is applicable to testing vapor-liquid phase equilibrium parameters of various low-boiling pure substances (gaseous at room temperature) and binary/ternary systems, and is particularly suitable for measuring refrigerants and their mixtures.

Key Features

l  Wide temperature measurement range: Suitable for measurements within the temperature range of -30~60°C.

l Accurate temperature measurement: The temperature measurement accuracy reaches 0.02°C, ensuring reliable temperature data.

l High temperature control precision: The temperature fluctuation is less than ±0.05°C, ensuring experimental stability.

l Wide pressure measurement range: The pressure range is 0.1~4 MPa, with support for customization for higher pressures.

l  Accurate pressure measurement: Adopts a high-precision pressure sensor, with a pressure sensor measurement uncertainty of less than 0.04% FS.

l High degree of automation: Capable of automatic temperature control, automatic temperature measurement, automatic pressure measurement, and data processing.

l Automatic sampling: Enables multiple high-precision quantitative sampling and analysis with a single sample injection, featuring short experimental time and stable experimental results.

l  Easy operation: Operated via a liquid crystal display, with direct installation of testing software, no need for additional testing computers.