Air conditioning is a central aspect of building technology. Therefore air conditioning is a major element when training building craftsmen and engineers.
The clear arrangement of the model ET 605 presents a complete air conditioning system with a transparent ventilation duct and a climatic chamber. The key elements of the system are a cooler with refrigeration system, blower, vapor humidifier and a heater. Three motorized air flaps control the distribution of air within the system. The climatic chamber is provided with two different heating loads (damp and dry). Temperature and relative humidity are measured at relevant points in the ventilation duct and are displayed digitally. In the refrigerating circuit two pressure gauges with integral temperature scales and a flow rate meter supply all relevant measured values. 
The ET 605 is manually operated. An important feature of the system is that it is fully prepared for attaching various automation solutions. The user can thus include this important topic as part of the instruction. The following solutions are available:
- Software solution ET 605.01

- Industrial climatic controller ET 605.02

- Signal connection box ET 605.03 for connecting an individual

application solution.

The well-structured instructional material sets out the technological fundamentals and provides a step-by-step guide through the experiments.

- Familiarization with an air conditioning system and

  its components
- Conditioning the air within a room
- Mixing different airflows
- Representation of the humidification and 

  dehumidification of air using a h-ω diagram
- Representation of the refrigerant circuit using a
  p-h phase diagram
- Effects of a heating load (damp and dry)
- Recirculation and fresh air modes
 
together with the optional accessory:
- Automation of an air conditioning system