Gravimetric measuring system, comprising - a balance having a weighing chamber surrounded by a plurality of weighing chamber walls (23, 24, 26, 28), an electromechanical weighing system enclosed by an adjoining weighing system chamber, and an electronic control apparatus for controlling operation of the system in accordance with rules stored in a memory of the electronic control apparatus, and - a plurality of functional modules (14, 16) which generate heat during operation and which can be inserted as required into module receptacles arranged on at least one weighing chamber wall, wherein the module receptacles have - device-side thermal interface components which are thermally connected to one another and to a central cooling apparatus, and - in each case a device-side identification interface component, and wherein the functional modules (14, 16) have - module-side thermal interface components corresponding to the device-side thermal interface components, which in the inserted state of the respective functional module (14, 16) come into thermal contact with the device-side thermal interface component of the respectively associated module receptacle, and - in each case a module-side identification interface component corresponding to the device-side identification interface components, wherein the control apparatus is designed to identify each functional module (14, 16) inserted in a module receptacle through interaction between the respective device-side and module-side identification interface components (30a, b) and to select one of a plurality of operating variants on the basis of rules stored in the memory of the control apparatus, and wherein the at least one weighing chamber wall, which forms a separating element between the weighing chamber and the weighing system chamber, is designed as a support structure having recesses which form said module receptacles and which leave the majority of the wall surface free, which recesses are closed on the weighing system chamber side by a fixedly installed end wall and can be closed on the weighing chamber side optionally by panels, which are spatially adapted thereto and have no weighing function, or by said functional modules (14, 16). - a balance having a weighing chamber surrounded by a plurality of weighing chamber walls (23, 24, 26, 28), an electromechanical weighing system enclosed by an adjoining weighing system chamber, and an electronic control apparatus for controlling operation of the system in accordance with rules stored in a memory of the electronic control apparatus, and - a plurality of functional modules (14, 16) which generate heat during operation and which can be inserted as required into module receptacles arranged on at least one weighing chamber wall, wherein the module receptacles have - device-side thermal interface components which are thermally connected to one another and to a central cooling apparatus, and - in each case a device-side identification interface component, - device-side thermal interface components which are thermally connected to one another and to a central cooling apparatus, and - in each case a device-side identification interface component, and wherein the functional modules (14, 16) have - module-side thermal interface components corresponding to the device-side thermal interface components, which in the inserted state of the respective functional module (14, 16) come into thermal contact with the device-side thermal interface component of the respectively associated module receptacle, and - in each case a module-side identification interface component corresponding to the device-side identification interface components, - module-side thermal interface components corresponding to the device-side thermal interface components, which in the inserted state of the respective functional module (14, 16) come into thermal contact with the device-side thermal interface component of the respectively associated module receptacle, and - in each case a module-side identification interface component corresponding to the device-side identification interface components, wherein the control apparatus is designed to identify each functional module (14, 16) inserted in a module receptacle through interaction between the respective device-side and module-side identification interface components (30a, b) and to select one of a plurality of operating variants on the basis of rules stored in the memory of the control apparatus, and wherein the at least one weighing chamber wall, which forms a separating element between the weighing chamber and the weighing system chamber, is designed as a support structure having recesses which form said module receptacles and which leave the majority of the wall surface free, which recesses are closed on the weighing system chamber side by a fixedly installed end wall and can be closed on the weighing chamber side optionally by panels, which are spatially adapted thereto and have no weighing function, or by said functional modules (14, 16).