Abstract: A system for implementation in a procedure in which parts are processed in processing units (for example, sintering furnaces) includes at least a first process tool operating at a first location (but not necessarily physically on location at the first location). The process tool includes a communication system to communicate with sensors and controllers used in at least a first processing unit at the first location and at least one processor in communication with the communication system and with a memory. At least one mathematical model is preferably stored in the memory. The mathematical model is adapted to calculate states of at least one parameter of the parts (for example, a physical state such as temperature, density of carbon content of parts in a sintering procedure) over time during the procedure upon execution of the mathematical model by the processor. The processor uses data provided by at least the sensors via the communication system to calculate the states.