Centurion Scientific: Refrigerated Centrifuges temperature control
At Centurion, we have taken temperature control seriously. We keep the refrigeration unit in the refrigerated centrifuges running constantly, as this not only gives the compressor a longer and reliable life, but stops the constant surges of power. Due to the fact that the refrigeration unit is running constantly it is quite usual to see ice in the chamber even at above 0°C temperatures.
To maintain the temperature, we have a highly efficient heater coil system around the chamber, next to the refrigeration tubes, where we pulse heat via a highly accurate controller system (PID controller, which calculates and manages the temperature). By running both in conjunction with each other gives better overall temperature control, achieving the desired set temperature.
Imagine using a shower: you turn on the both the cold and hot water, adjusting to suit your desired temperature. You would not want to use one where you had to stand under the cold water, then the hot, then the cold in order to regulate the temperature.
Please see the graph that compares our system to another brand leader.
Centurion has a set temperature of 3°C, and our competitor of 4°C. This allows us to separate the target areas, to show how each machine regulates the temperature. Both refrigeration units use the same air probes, temperature units, and have the probes set at the same distance from the rotor, and finally, the correct vertical distance to optimum the tube area.
But as you can see, we control to 0.3°C, whereas our competitor controls it to 3°C. The Centurion’s control is unsurpassed, and our competitor’s, which all use the same method of turning the compressor on and off, is shown to have very poor control.
Having the temperature being so controlled means that the Centurion’s power usage is less, and the compressor lasts longer. This system has been in use for over 15 years, so we do know the longevity of our products. Require complete accuracy with your samples? Purchase a Centurion Centrifuge for total peace of mind. Tried, tested and proven as one of the most accurate systems in the market place.