Modularized digitizing time-synchronizing current-sampling system for electroanalytical studies

The digitizing time -synchronizing current-sampling system presented consists of a collection of function modules.By using a patch panel to interconnect the appropriate modules, it is possible to synthesize most of the instruments useful for electrochemi.calanalysis.All data .arerecorded in digital form and are thus computer compatible.Four instruments new to the field of electrochemical instrumentation are.descrjbed.They are: a digital integrator, using the principle of charge reinjection; an on-line digital differentiator; a charge-rate-sensitive limit rate meter; and a gated base-line restorer.The studies presented show the versatility of the system.Automation of constant-otentjal coulometry by the use of a time programmer or thelimit rate meter is discussed.Predicative coulometry is performed by the use of a, signal router to distribute data between two scalers operated at preselected time intervals or by the use of a data processor and a pulseheight analyzer, operated in the niultichanriel scaling mode to