Environmental controllers for the Kinexus rheometer are based on a unique ‘plug and play’ cartridge design.

  • Cartridge insertion mechanism is quick, easy and robust
  • All mechanical, power, communication and fluid connections made in one action
  • Automatic cartridge recognition and configuration
  • Active Hood design based on interactive temperature control elements in local sample environment to minimize radial and vertical thermal gradients
  • Temperature changes of up to 30ºC per minute
  • Extremely stable temperature control using a high accuracy PT100 sensor in close proximity to sample
  • Temperature resolution to 0.01ºC
  • Wide range of compatible cone-plate and parallel plate measuring systems available as standard
  • Interchangeable lower plates for optimal geometry combinations
  • Efficient solvent trap designed for accurate measurement of samples with volatile components
  • Inlet for inert gas feed into sample environment

Accurate temperature measurement and control is a fundamental requirement for almost all rheological measurements. The Kinexus rheometer uses easily interchangeable environmental controllers based on a unique cartridge design, to meet temperature control requirements for a variety of complex fluids and soft solid samples.

Peltier-based temperature control units use solid-state thermoelectric Peltier modules as heat pumps, to control the temperature of the sample.

Peltier systems have benefits which make their use advantageous for rheometer temperature control – having high heating and cooling rates, and providing excellent temperature accuracy and stability.

Sample thermal gradients are minimized by a design which combines Peltier elements with additional heaters to actively control radial and vertical heat losses from the local sample environment.

The use of a separate heat exchanger system, to remove excess heat from the Peltier module to maintain its optimum working efficiency, is a general requirement when used for temperature control on a rheometer system. 

If you are unsure as to specifying an appropriate temperature and environmental control unit for your sample type or measurement application, please contact Malvern for further advice and/or a sample test and evaluation report.

Temperature range:
-40°C to +200°C. For operation below -5ºC a chilled circulating fluid must be used.
Temperature resolution:
0.01°C.
Temperature stability:
Better than ±0.1°C.
Maximum heating rate (temperature range dependent):
30°C/minute.
Maximum cooling rate (temperature range dependent):
20°C/minute.
Quick-connect cartridge system:
Plug & play; auto-recognition and configuration in software.
Interchangeable lower plates:
Varying diameters & surface finishes e.g. roughened (sand blasted) or serrated.
Options:
Disposable plate option.