Scientific Analytical Calorimeter Solutions

Multiple Coolers | CAL3K Features

The cooler is the slowest system component.

We have optimised it as best we can; but it is slow!

It cools a vessel down by blowing air at it. Not a very efficient way, BUT very resource friendly and economical.

Cooling the vessel with air is possible because the temperature RANGE of the vessel is large: 1°C to 70°C.

It is limited on the top by the operator feeling the warm bomb.

Above 55°C the CAL3K outputs a warning that the vessel is warm to the touch.

In order to use multiple coolers three bombs are required. Then two coolers ‘cool’ while the third vessel is in the calorimeter. This high thru put operation is only possible in the CAL3K-A.
Multiple CAL3K Air Coolers | DDS Calorimeters


The cooler 3K-2 can be controlled from the CAL3K or via the USB port at the rear. The cooler indicates this on its display: COOLING FROM VESSEL. Another way to change the cooling parameters is to connect the cooler to a PC via the USB interface and change the parameters.

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The new Air Cooler replaces the traditional (but very fast and expensive) water cooler. It also uses less resources (electricity & water). The air cooler works best when the vessel temperature is well above the ambient temperature. This is possible because the CAL3K vessel, with linear temperature sensing, allows higher vessel temperatures. The air cooler can cool a vessel in 6-7 minutes from 44°C to 32°C when the ambient (room) temperature is at 25C.

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The system timing depends on the timing of the CAL3K and the Air Cooler. The cooling cycle depends on the room temperature: A warmer room temperature results in longer cooling times. The Cooler ‘READY’ time can be adjusted to suit your operating conditions, but an average of 7 minutes per cooling cycle is the design target.

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