AUTOMATION

Automation and control system of the biogas plant is based on industrial sequence controller Siemens CPU315-DP2 and application of distributed peripheral system Simatic ET200S with operator's touch screen control panel OP277 Touch. Together with sensors and actuation mechanisms the automation system secures automatic process control and biogas plant technological processes protection and regulation.

Interaction between units is performed by means of PROFIBUS and MPI networks using RS-485 physical interface. Master program is developed with the application of Simatic Step7 development system and recorded to memory stick.

Photo. Biogas plant Visualization

Automation provides the following:
- level control by hydrostatic and emergency electric sensors;
- control over substrate loading and discharge from tanks with the help of weight sensors, flow meters, level sensors and substrate excess pressure relay;
- substrate mixing regulation with the help of controller;
- pressure control in heating system with the help of system recharge valve;
- temperature control inside biogas reactor; - biogas quality control at gas analyzing system;
- biogas pressure control with the help of gas pressure sensor, cover dome level sensor, and safety valve;
- biogas quantity with the help of gas flow meter.

Photo. Biogas plant Visualization