VMS series products integrate a dedicated constant-flow melt pressurization system, specialized rheometer, high-precision temperature-pressure sensors, high-speed processing units, and uniquely designed driving and heating structures to form a complete online melt viscosity measurement system.

Built with a robust full-frame design, the system ensures stable measurement accuracy and accurately reflects changes in melt viscosity. Widely used in viscosity measurement and process control across industries such as petroleum refining, chemicals, ethylene, fertilizers, and synthetic fibers.

The VMS series design fully meets industrial control standards, with installation conditions compliant with instrumentation measurement requirements.

Measurement principle:

An incompressible melt fluid undergoes steady laminar flow in a horizontal tube, with the measurement section far from the inlet and outlet, and the flow being one-dimensional along the axis.

By simplifying the continuity and Navier-Stokes equations in cylindrical coordinates, it is shown that for a capillary viscometer with a fixed length and diameter, the viscosity can be determined by measuring the pressure drop and volumetric flow rate using a simplified formula.

Advantages:

Independent measurement system, preserving the original melt fluid pipeline characteristics.

Integrated installation, easy to set up and maintain.

Modular design for convenient replacement and servicing.

Melt temperature and pressure displayed separately.

Automatic temperature compensation within a specified range.

Automatic pressure compensation within a specified range.
      4-20mA output.

Technical parameter