The dynamic control characteristics of electronic individual zone controllers can be determined in a simulation test bed. This is done by connecting the control device via special interfaces to a simulation environment which simulates heat transmission and emission as well as the thermal behaviour of the room. The interface converts the determined room temperature into the physical controller input (e.g. resistance) before transmitting it to the control device. The control outputs are transmitted via data acquisition to the simulation environment. The transmission of the control signal of a valve drive is a special feature: the control device controls a real actuator which is positioned on a valve and a displacement sensor registers the valve stroke which serves as input for the simulation environment.
In most cases resistive temperature sensors are used for control devices to determine the room temperature, so the room temperature determined in the simulation environment is transmitted to the control device via a programmable resistor decade.