An image-capturing device includes a photographing lens, a first imaging device, a second imaging device and a diaphragm. A display is associated with the indicator to display the percentage of hydrocarbon gas in the gas intake which indicates the amount of moisture in the granular material. Said steam-outlet channels are united with the aid of a steam header and disposed on the part of the orifice perimeter of the side of a heat sink. Management of service elements andor service offerings is facilitated by a Service Development Tool.