Process controller having electrochemical cell integrating means
1,045,051. Automatic control. GENERAL ELECTRIC CO. Jan. 28, 1965 [Feb. 24, 1964], No.3833/65. Heading G3R. [Also in Division G4] In a process control system, a current corresponding to error in the magnitude of a measured variable of the process is applied through a differentiator and an electrochem...
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