Coating device for coating components with a coating agent, having a) a protected area which is explosion-proof and/or is under high voltage during operation, b) an unprotected area which is not explosion-protected and/or is at earth potential during operation, c) several sensors for measuring process variables of the coating device, wherein the sensors are arranged in the protected area, d) a data interface for external data communication, the data interface being arranged in the unprotected area, and e) a transmission system (17, 21) for transmitting data between the sensors in the protected area on the one hand and the data interface in the unprotected area on the other hand, f) a collecting device, wherein the collecting device f1) is being arranged in the protected area, f2) is connected on the one hand to the sensors and receives measured values of the process variables from the sensors, and f3) on the other hand is connected to the transmission system (17, 21) in order to transmit the measured values of the sensors to the data interface, g) a coating robot with a proximal robot arm and a distal robot arm, wherein the protected area is arranged at least partially in the distal robot arm, while the unprotected area is arranged at least partially in the proximal robot arm, and h) an insulating section in the distal robot arm between the protected area and the unprotected area, characterized in i) that the insulating section is a partition wall made of plastic. a) a protected area which is explosion-proof and/or is under high voltage during operation, b) an unprotected area which is not explosion-protected and/or is at earth potential during operation, c) several sensors for measuring process variables of the coating device, wherein the sensors are arranged in the protected area, d) a data interface for external data communication, the data interface being arranged in the unprotected area, and e) a transmission system (17, 21) for transmitting data between the sensors in the protected area on the one hand and the data interface in the unprotected area on the other hand, f) a collecting device, wherein the collecting device f1) is being arranged in the protected area, f2) is connected on the one hand to the sensors and receives measured values of the process variables from the sensors, and f3) on the other hand is connected to the transmission system (17, 21) in order to transmit the measured values of the sensors to the data interface, f1) is being arranged in the protected area, f2) is connected on the one hand to the sensors and receives measured values of the process variables from the sensors, and f3) on the other hand is connected to the transmission system (17, 21) in order to transmit the measured values of the sensors to the data interface, g) a coating robot with a proximal robot arm and a distal robot arm, wherein the protected area is arranged at least partially in the distal robot arm, while the unprotected area is arranged at least partially in the proximal robot arm, and h) an insulating section in the distal robot arm between the protected area and the unprotected area, characterized in i) that the insulating section is a partition wall made of plastic.