Reactor calorimeter for thermo-kinetic data measurement - has intermediate and outer thermostatic chambers with temp. difference regulation

A reactor calorimeter for determining thermokinetic data consists of a reactor (1) with an agitator (5) and a regulated heater (6). Isothermal conditions are maintained in the reactor during reactions. The necessary electrical energy is measured. It is a highly accurate calorimeter whose reference line or its variation is continuously recorded without access to the reaction event. The arrangement enables the thermal energy to be measured under strictly isothermal conditions. The reactor (1) is placed in an intermediate thermostatic chamber (2) at an intermediate temp. (To+delta.T20). The intermediate chamber (2) is contained in an outer thermostatic chamber (3) at a second temp. (To). The temp. differences between the reactor and the intermediate chamber and between the intermediate chamber and the outer chamber are held constant using heaters and sensors. The intermediate chamber heater is connected to a heating power measurement circuit.