Measurement System For Pot Resistance

I use my own system for measurements of the pot resistance. This system includes the following elements: the pot controller (one for two pots), controller of a potline current with the timer for the time label generation and for synchronization and system of network concentrators. The pot controller is designed and implemented utilizing the microprocessor i8085. It employes a double integration ADC with internal optocopplers for measurements. I believe that such a ADC is the most interesting part of my project. For the control device of this ADC I use a timer-chip i8253.
The software of the pot controller is implemented in the Forth language. The choice of the programming language was one of the most important desisions taken in course of the project. The Forth language allowed us to use a very simple and cheap controller with 32 k ROM and 32k RAM.

You can see the results produced by this system in a figure below. Red line represents the current of a potline, blue is the resistance of a pot, green is the voltage on a pot, green below is the noise of a pot. During anode effect the noise is very large (it is not shown on the diagram). You can see three anode effects (parameters of the first of them - in the table in the right bottom corner). You can see the movement of an anode beam, but you can not see the breaker, because at this time a point fider for alumina was applied to a pot. The GUI for the program is written in Delphi and thus it is very convenient. In this program I used my own component TDecart for display and scaling of the diagrams . The behaviour of this component is similar of the diagrams in system Real Flex.
Sorry! All text on figure - Russian.
In table: time, current (kA), voltage, resistance and noise. If you see letters on noise grid - it is anode effect.