Eco Amel 731- Integrator/Coulomb Counter

This early '80s instrument performs integration of current streams to obtain the total Coulombs of charge moved during a measurement period. This is most often used for determining battery charge states, or in electro-chemistry (like plating and others). However, I show in this video how it could be used to determine the capacitance of relatively large capacitors (which is difficult to do with most LCR meters).
We give a quick tour of the unit, inspect the interior, determine the inputs and operational controls. We then integrate current from a standard to see if the resultant coulomb value is as expected, then we use it to measure capacitance of capacitors (some very large ie- 20,000Mfd).