Ventilation controller for animal breeding house - uses multi-cam programmer and timer to control fans from various sensors

摘要

The ventilation cycle is controlled automatically depending on the characteristics of the processed air. This allows the airborne bacteria and germs to be reduced in animal rearing buildings. A cyclic programmer starts a timer whose contact starts the ventilation fans. A multi cam programmer acts on the return switches and establishes a connection from the power supply to the timer depending on the connections through various sensor probes. This allows the ventilation period to be extended to a time period depending on the timer setting. The various cams enable the time duration for different channels to be determined within a cycle period for operation of the fans and without changing the frequency of the operating cycles.