Temperature control is mainly found in test and inspection rigs, as well as material tests. All the components of an automobile are exposed to extremely high temperature fluctuations to ensure that they function reliably. This process of testing many different components in special test rigs makes an important contribution to increasing quality and reliability. The simulation of extreme environmental conditions across a wide range of different temperatures is an important part of the material tests. Climatic chambers are used to simulate ambient temperatures, while LAUDA process circulators control the temperature of the coolant to simulate cooling circuits in the vehicle.