Various Modules in One Calorimeter
The MMC 274 Nexus® consists of two parts: the base unit with electronics and the exchangeable calorimeter module. This guarantees maximum flexibility.
Exchangeable calorimeter modules are available for different applications. The Accelerating Rate Calorimeter (ARC®) module can be used for standard process safety work. The External heater module can be employed for more sophisticated measurements.
Key Features and Advantages of MMC 274 Nexus®
- Multiple testing modes in one instrument for wide application coverage
- Scanning mode (constant power, constant heating rate)
- Isothermal mode
- Adiabatic mode with Heat-Wait-Search for process safety tests
- Exchangeable calorimeter modules in one table-top instrument
- ARC module for safety testing
- External sample heater module for scanning tests as with DSC
- Wide temperature range up to 500°C
- Wide pressure range up to 150 bar (15 MPa)
- Various sample containers of different materials and volumes
- Proteus® software for the evaluation of onset, peak, area, etc., which may be combined with other thermoanalytical data in one plot
The MMC 274 Nexus® can be used for a wide range of applications in different areas
- Chemical Processing Industries
- Process development and safety
- Kinetics, ΔHr
- Vapor pressures, VLE
- Storage and Transportation of Chemicals
- Energetic Materials Testing
- Batteries
- Isothermal charging and discharging of coin cell
- Thermal stability of full cells
- Component testing (cathode materials, electrolytes)
- Physical Properties Measurements
Process Safety: The ARC Module
Heat-Wait-Search and Pressure Tests
A defined volume of a sample (ml scale) is placed in a tube-shaped container. The container is surrounded by a sophisticated heating system. Depending on the operating mode, the surroundings of the tube vessel are controlled to the same temperature as the sample. If there is no temperature difference between the surrounding heaters and the sample, then all the heat generated by the sample stays inside the sample.
The Scanning Module
Isothermal and Scanning Tests
Here, an additional heater is placed on the outside of the sample container. This allows for a defined power input and more accurate temperature control of the sample. The external heater is useful for running isothermal and constant temperature ramp tests, especially in those experiments where reaction energies are higher.
Key Features of the Calorimeter with the Scanning Module
- Scanning mode as with DSC via constant heating rate or constant power
- Isothermal mode as with DSC
- Pressure measurement
- Injection of liquid samples during the measurement
