Calvet calorimeters: reliable results under your real experimental conditions
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A calorimeter has to meet two requirements at once: deliver results you can rely on, and reproduce the real conditions of your process.
Most instruments force you to choose. Either you get an accurate measurement under simplified laboratory conditions, or you get closer to the real process and accept a wider uncertainty.
Calvet technology was designed so you don’t have to choose between the two.
3D sensors: measure the heat a flat sensor misses
A flat sensor only measures 30 to 50 % of the heat actually released, and that proportion drops further as temperature rises. Everything else has to be reconstructed through calibration.
The 3D Calvet sensor fully surrounds the cell and captures more than 90 % of the heat across the entire temperature range. Calibration then only corrects a marginal fraction of the signal.
Added to this is Joule effect calibration: it allows the sensor to be calibrated across its full temperature range, whereas calibration by melting reference materials is limited in practice to three to five temperatures. A more complete measurement plus a denser calibration both lead to a better accuracy.
Isothermal or scanning mode: match the thermal profile to your process
Isothermal mode measures at constant temperature, with stability better than ±5 µW over one hour. This is the mode for slow reactions, ageing and stability studies.
Scanning mode follows the material throughout a temperature program, revealing phase transitions, critical points and decompositions.
Calvet calorimeters offer both. The profile is chosen according to your process, not according to the limits of the instrument.
Interchangeable cells: reproduce the real conditions of your process
The calorimetric block accepts a wide range of interchangeable cells, which adapt the instrument to each experiment: batch, high pressure up to 2000 bar and beyond, controlled pressure, gas circulation, mixing and stirring…
You therefore characterise your sample under the conditions of your process, and not under simplified laboratory conditions. This is precisely what makes an industrial scale-up safe.
Discover the Calvet calorimeter range
One technology, four instruments. Choose the configuration suited to your temperature range and your sample volumes.
Every calorimeter in the range shares the 3D sensor and the interchangeable cells. Only the temperature range and the sample capacity change.
