PRODUCTS
Elevated Temperature Viscometer
Elevated temperature viscometers for high-temperature viscosity measurement
An elevated temperature viscometer is designed to measure the dynamic viscosity of materials under controlled high-temperature conditions. These instruments are essential for analysing products whose viscosity changes significantly during heating or processing.
Fungilab offers complete high-temperature viscosity measurement solutions through its rotational viscometers combined with the Thermosphere High Temperature System, enabling accurate and repeatable measurements at temperatures up to 300°C.
These systems are widely used in research laboratories, quality control and industrial process development where temperature-dependent viscosity is a critical product parameter.
Our accessories
Enhance the capabilities of your Fungilab viscometer with accessories designed for more accurate, versatile and efficient viscosity measurements.
Thermosphere
- Compatible with all Fungilab viscometers
- Defined temperature up to 300C
- External device easy to use to control the temperature while measuring
- Choice of spindles
- Alignment Bracket
- Thermo Container with safety guard and cap
- Extracting tool
- Temperature controller
- Ambient to 80ºC < 0.5ºC
- 80ºC to 150ºC < 1.0ºC
- 150ºC to 300ºC < 1.5ºC
THERMOSPHERE
LABORATORY DIVISION
Dynamic viscosity
Viscosity is part of the science of Rheology which quantifies the resistance materials give to changing shape.
Proper interpretation of viscosity data can reduce the rate of rejects while keeping production and formulation development costs to a minimum. Consistent product quality is ensured through proper viscosity measurements, either alone or in conjunction with compatible tests.
Dynamic viscosity testing can help with:
- Material characterization or “finger-printing”
- Standard testing methods to check for differences between batches
- Indirect way of measuring quality
- Product formulation
- Quality control
- Process control
- Design, optimization and operation of process equipment
Material characterization or “finger-printing”
Standard testing methods to check for differences between batches
Indirect way of measuring quality
Product formulation
Quality control
Process control
Design, optimization and operation of process equipment
Viscosity types
Dynamic viscosity
Centipoise (mPa*s)
Kinematic viscosity
Centistokes (mm2/sec)
Apparent viscosity
Centipoise (mPa*s)
Newton’s Law
According to Newton’s law, the viscosity of a fluid is constant. As shear rate changes, shear stress changes in proportion such that viscosity is constant. Common fluids that exhibit such behavior are:
Unfortunately for us, not all fluids follow Newton’s law. In fact, most fluids do not. For this reason, fluids are classified into two categories:
Rotational Viscometer
The viscosity is calculated from the measured torque and rotational speed, as well as the dimensions of the measuring geometry.
A fluid’s resistance to flow is measured by the torque it exerts on the rotating shaft of the viscometer.
Absolute viscosity: the measuring geometry fulfills certain requirements (which is the case of coaxial spindles).
Relative viscosity: the dimensions of the measuring geometry are not well defined.
Advantage
Flexibility in:
- Viscosity Range
- Temperature range
- Shear rate range
Application
For Newtonian and non-Newtonian substances and temperatures different from room temperature.
High-temperature viscosity measurement solutions
Elevated temperature viscometers allow laboratories to evaluate how viscosity changes as temperature increases. Many materials become significantly less viscous when heated, making temperature-controlled testing essential for product development, manufacturing and quality assurance.
Using a rotational viscometer together with a dedicated high-temperature measuring system provides reliable dynamic viscosity measurements under stable thermal conditions while maintaining excellent repeatability throughout the testing process.
Fungilab Thermosphere system
The Thermosphere High Temperature System has been specifically developed for elevated temperature viscosity measurements up to 300°C. It integrates with Fungilab rotational viscometers to provide precise thermal control while minimising sample evaporation and ensuring stable measurement conditions.
Compatible rotational viscometers
The Thermosphere system can be combined with several Fungilab instruments, including:
- Viscolead Series.
- V-Series.
- Dynamic viscometers for laboratory and industrial applications.
Typical applications
Elevated temperature viscosity measurements are widely performed for:
- Bitumen and asphalt.
- Hot-melt adhesives.
- Resins and polymers.
- Waxes.
- Industrial oils.
- Chemical products.
- Research and development.
Why measure viscosity at elevated temperatures?
Many products are processed, transported or applied at temperatures well above ambient conditions. Measuring viscosity at the actual operating temperature provides more representative data for production control, formulation optimisation and product performance evaluation.
Reliable laboratory performance
Temperature stability is one of the most important factors influencing viscosity measurements. Fungilab high-temperature systems provide precise temperature regulation while allowing laboratories to verify instrument performance using certified viscosity standard oils whenever appropriate.
Complete viscosity measurement solution
Fungilab offers a complete portfolio of viscosity measurement equipment, including rotational viscometers, temperature control systems, specialized adapters and certified reference standards, enabling laboratories to perform accurate viscosity measurements from ambient conditions up to high-temperature applications.
Frequently asked questions about Elevated Temperature Viscometer
What is an elevated temperature viscometer?
An elevated temperature viscometer is a viscosity measurement system designed to determine the dynamic viscosity of materials under controlled high-temperature conditions.
What is the maximum temperature supported by the Fungilab Thermosphere system?
The Thermosphere High Temperature System allows viscosity measurements at temperatures of up to 300°C.
Which materials require high-temperature viscosity measurements?
Typical materials include bitumen, asphalt, hot-melt adhesives, polymers, resins, waxes, industrial oils and various chemical products.
Which Fungilab viscometers are compatible with Thermosphere?
The Thermosphere system is compatible with several Fungilab rotational viscometers, including the Viscolead Series and V-Series.
Why is temperature control important during viscosity measurements?
Viscosity varies significantly with temperature, making precise thermal control essential for obtaining accurate, repeatable and comparable measurement results.
Can elevated temperature viscometers be used for quality control?
Yes. They are widely used in quality control laboratories to verify product consistency under actual processing or operating temperatures.
How can measurement accuracy be verified?
Routine verification using certified viscosity standard oils, together with proper temperature control, helps maintain accurate and traceable viscosity measurements.
Which industries use elevated temperature viscometers?
They are commonly used in the petroleum, chemical, polymer, adhesive, coating, asphalt and research industries where viscosity must be measured under high-temperature conditions.
