Accessory for MCR Temperature Devices:
Low-Temperature Options
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- Combinable with electric and convection temperature devices
- Tailor-made solutions for low temperatures down to -15 °C, -90 °C, or -170 °C
- Toolmaster functionality for automatic system configuration and error-proofing
Testing at low temperature conditions is essential whenever viscoelastic properties need to be determined over a broad temperature range. Examples include polymer phase transitions, physical aging of glass-forming materials (e.g., glycerol), bonding properties of adhesives, rheological properties of lubricants, greases, asphalt, and bitumen. Anton Paar’s low temperature options can cool down your sample to -15 °C, -90 °C, or even to -170 °C, with electrical and convection temperature devices. Automatic recognition and configuration by the MCR RheoCompass software, along with Toolmaster functionality, make it nearly impossible to choose incorrect settings.
Key features
Suitable for any low-temperature application: Cooling solutions down to -170 °C
Choose from three low-temperature options with different temperature ranges for electrical (P-/H-ETD) and convection temperature devices (CTD). All three enable faster cooling rates (up to 70 °C/min), including when operating above ambient temperatures (e.g., when cooling down to ambient temperature after the test). The setup is completed within a few minutes and without special tools. Flushing with dry air or inert gas effectively prevents icing of the temperature device and measuring geometry.
Solution 1: Gas Chiller Unit 10 (GCU 10) for temperatures down to -15 °C
GCU 10 is designed for moderate temperatures down to a minimum of -15 °C without the use of liquid nitrogen – which is expensive, often subject to restrictions, or in some cases not permitted at all. A unique heat exchanger transfers the cold produced by a fluid circulator to the gas stream, which is used to directly control the oven temperature. Choose from different fluid circulators depending on the desired minimum measurement temperature and avoid unnecessary costs for an oversized setup. A straightforward, budget-friendly, and energy-saving solution, this is the best choice when working with temperatures slightly below room temperature.
Solution 2: Gas Chiller Unit 20 (GCU 20) for temperatures down to -90 °C
GCU 20 uses compressed gas (air or inert gas) to cool the sample down to -90 °C. Energy and gas consumption as well as heat emission are minimized by automatic and continuous switching from the cooled gas to warm gas. This makes it possible to cover the full temperature range of the temperature device within one test. Unlike low-temperature options that operate based on liquid nitrogen and may require refilling of the coolant, the GCU 20 does not need any additional downtime. It is the best solution when performing experiments lasting several hours where the use of liquid nitrogen is prohibited by internal safety regulations.
Solution 3: Evaporation Unit 20 (EVU 20) for temperatures down to -170 °C
EVU 20 works with liquid nitrogen provided by a separate dewar with typically 50 L or 100 L volume to directly control the oven temperature. The system is designed for stable temperature control even for long-term measurements at all temperatures down to -170 °C. The liquid nitrogen consumption is optimized according to the required temperature (5 L/h to 12 L/h), which reduces operation costs. Consumption is further minimized by switching automatically to air or inert gas (e.g., nitrogen) above ambient temperature. This makes it possible to cover the full temperature range of the respective temperature device within one test.
Specifications
| Temperature device (principle) | Gas Chiller Unit 10 | Gas Chiller Unit 20 | Evaporation Unit 20 (liquid nitrogen) |
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| CTD 450 TDR (electrical convection) | -15 °C to +450 °C | On request | -150 °C to +450 °C |
| CTD 600 MDR (electrical convection) | On request | -90 °C to +600 °C | -170 °C to +600 °C |
| CTD 1000 (electrical convection) | On request | On request | -150 °C to +200 °C (1000 °C without EVU) |
| CTD 200/GL (electrical convection) | On request | On request | -50 °C to +150 °C (200 °C without EVU) |
| P-/H-ETD 400 (electrical) | n/a | -80 °C to +400 °C | -150 °C to +400 °C |
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