Abstract: The invention relates to a process control system comprising a calculating unit enabling a charge value (W) to be determined from operations occurring in the process control system. Preferably, said process control system comprises a process control computer with a web server and a computer which is used to access the processes control computer via Internet. The charging value (W) is especially a service fee which is to be paid to an application service provider by a user of the process control system.

Abstract: The invention relates to a switch cabinet or cover with an air-conditioning unit, which comprises a cooling circuit system with an evaporator and a condenser. The evaporator has an integral air circuit, connected spatially with the interior of the switch cabinet and through which the air in the interior of the switch cabinet may be forced, by means of a blower. The condenser is in contact with the remaining components of the cooling circuit, by means of refrigerant lines. According to the invention, in order to reduce emissions from the air-conditioner, due to environmental damage considerations, the evaporator, together with the dedicated blower, is integrated in an evaporator unit, attached to the switch cabinet. The condenser, together with a dedicated blower, is integrated in a condenser unit, whereby the condenser unit is spatially separate from the evaporator unit and from the switch cabinet.

Abstract: The invention relates to a switch cabinet or cover with an air-conditioning unit, which comprises a cooling circuit system with an evaporator and a condenser. The evaporator has an integral air circuit, connected spatially with the interior of the switch cabinet and through which the air in the interior of the switch cabinet may be forced, by means of a blower. The condenser is in contact with the remaining components of the cooling circuit, by means of refrigerant lines. According to the invention, in order to reduce emissions from the air-conditioner, due to environmental damage considerations, the evaporator, together with the dedicated blower, is integrated in an evaporator unit, attached to the switch cabinet. The condenser, together with a dedicated blower, is integrated in a condenser unit, whereby the condenser unit is spatially separate from the evaporator unit and from the switch cabinet.