The 8619 is a microprocessor transmitter/controller for connection of sensors which deliver raw signals for pH, O.R.P. and conductivity and flow via pulses. Type 8619 is the ideal device for measurement and control and dosing processes e.g. in water treatment plants (like boiler, cooling tower or reverse osmosis systems) and food and pharma plants. Modularity offers high flexibility for adjusting it to the applications resulting in having a very good price to functionality relation. Sophisticated electronics and state of the art control algorithms ensure that optimum process control is maintained at all times with minimal operator intervention.