The tempering task is in the foreground
The most modern pump technology and optimized circulation increase the flow rates and lead to a significantly improved heat transfer at the object. Predictable and reproducible results and unmatched change rates in the temperature curve result in a significantly improved return on investment (ROI), which is further enhanced by the minimized operating costs of the Unistat principle. And because it has proven itself, the Unistat principle has not changed significantly from 1988 until today.
Conventional bath and circulation thermostats work hydraulically with open bath
In the case of open thermostatic baths (Fig. 1), regardless of whether it is tempered internally (A) or externally (B), the bath liquid is not sealed to the atmosphere, ie open and depressurised. With external temperature control (B), the bath level must be regulated on both sides. In the typical externally closed temperature control (Fig. 2), where the object is in direct (D) or indirect (C) contact with the thermostatic medium, the atmospheric open thermostatic bath is at the same time an expansion vessel for thermally induced volume changes.
Unistats® embody power and dynamics. Small in size, big in performance.
The Unistat system (Figure 3) combines the possibilities of effective thermodynamics and intelligent microelectronics. This results in a comprehensive alternative to the previously known temperature control technology. Unistats are circulating thermostats without temperature control bath. For thermally induced volume change in externally closed systems, an expansion tank replaces the conventional bath. For tempering open bathrooms (F), the expansion vessel is simply shut off. The Unistat is hydraulically sealed and can – without leveling problem – under the table. Due to this principle, the masses to be tempered are reduced and thus the rates of temperature change increase. Unistats have their own smallest masses and therefore achieve cooling rates of several hundred Kelvin per hour. For a comparison of dynamics, a look at the refrigeration capacity [watt / liter] according to DIN 12876 is suitable.