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Pressure Cell

Rheology under pressure is used to simulate process conditions, to measure above the boiling point, or to prevent sample evaporation. The pressure cell specifications are therefore tailored to each application. In the petrochemical industries, high pressures of up to 1000 bar and temperatures of up to 300 °C are required, whereas work with low-viscosity solvents requires a sensitive, yet fully closed system. To cover these diverse applications, a range of different pressure cells and measuring systems is available.

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Key Features

General features of all pressure cells

  • Modes of pressurization:
    - Self-pressurization due to volatile components and thermal expansion of the sample
    - External pressurization with pressure supply units connectable to high-pressure gas tanks
    - External pressurization with high-pressure pumps for liquids
  • Online pressure sensor
  • Display of all recorded data including pressure values in the software
  • Different flow-through options:
    - Characterization of already pressurized samples
    - The sample can be easily exchanged between different experiments
  • Convenient handling and cleaning
  • Pressure cell holder for convenient “parking and cleaning”
  • Certified safety concept

30 bar Starch Pressure Cell

  • Used to measure starch gelling behavior under pressure
  • Elevated pressure increases boiling point
  • Sealed system prevents evaporation
  • Electrical heating: from room temperature to 160 °C
  • Maximum pressure: 30 bar
  • Pressure supply: gas
  • Material: stainless steel
  • Measuring systems: RVA vane, 6-blade vane, concentric cylinder

150 bar Pressure Cell

  • For rheological measurements of samples with moderate and high viscosities at pressures of up to 150 bar
  • Peltier temperature control: -30 °C to 200 °C
  • Electrical heating: from room temperature to 300 °C
  • Maximum pressure: 150 bar
  • Pressure supply: gas
  • Material:
    - Stainless steel or
    - Hastelloy
  • Measuring systems: concentric cylinder, double gap and parallel plate

150 bar Pressure Cell XL

  • For samples with low viscosities down to 1 mPas
  • Pressure prevents evaporation and increases boiling point
  • Liquid temperature control: -10 °C to 180 °C
  • Electrical heating: from room temperature to 200 °C
  • Maximum pressure: 150 bar
  • Pressure supply: gas
  • Material:
    - Stainless steel or
    - Hastelloy
  • Measuring systems: concentric cylinder, double gap

170 bar Pressure Cell XL

  • For rheological measurements of samples with moderate and high viscosities at pressures of up to 170 bar
  • Suitable for the characterization of viscoelastic fluids showing rod climbing effects
  • Electrical heating: from room temperature to 200 °C
  • Maximum pressure: 170 bar
  • Pressure supply:
    - Gas or
    - Liquid
  • Material:
    - Titanium or
    - Hastelloy
  • Measuring systems: concentric cylinder

400 bar Pressure Cell XL

  • For measuring samples with low and moderate viscosities at pressures of up to 400 bar
  • Liquid temperature control: -10 °C to 180 °C
  • Electrical heating: from room temperature to 200 °C
  • Maximum pressure: 400 bar
  • Pressure supply: gas
  • Material: titanium
  • Measuring systems: concentric cylinder, double gap

1000 bar High Pressure Cell

  • For measuring samples with moderate and high viscosities at pressures of up to 1000 bar
  • Suitable for the characterization of viscoelastic fluids showing rod climbing effects
  • Electrical heating: from room temperature to 300 °C
  • Maximum pressure: 1000 bar
  • Pressure supply: liquid
  • Material: titanium
  • Measuring systems: concentric cylinder