(under subclass 78) Device wherein a) the control means is responsive to means which determine the chemical composition of the treated material or a by-product of the treatment or b) information from the sensors is fed to an information storage device wherein additional information is determined which additional information is then utilized to control the treatment.
(1) Note. Servomechanisms, i.e., automatic control devices
in which the output is constantly or intermittently compared with the input through feedback so that the error or difference between the two quantities can be used to bring about the desired control, are classified with their appropriate sensing devices.
