Abstract: A method and an arrangement for ultrasonic clamp-on flow measurement with the aid of an off-center sound path measurement via clamp-on ultrasonic transducers being fastened to an intermediate piece of a process pipe. Center sound paths as well as off-center sound paths are taken into account for the flow measurement via the arrangement and method. The arrangement for measuring flow includes a process pipe, through which a liquid or gaseous process medium flows, and an acoustic transducer pair and second clamp-on ultrasonic transducer operating in receive mode is disposed on the process pipe where two bodies are disposed on the inner wall of the process pipe to aid the off-center measurement.

Abstract: A method and an arrangement for ultrasonic clamp-on flow measurement with the aid of a measurement of off-center sound path, clamp-on ultrasonic transducers being fastened to an intermediate piece of a process pipe. Due to the method for ultrasonic clamp-on flow measurement on a process pipe, through which a liquid or gaseous process medium flows, center sound paths as well as off-center sound paths are taken into account. The arrangement for measuring flow includes a process pipe, through which a liquid or gaseous process medium flows, and at least one acoustic transducer pair. At least one second clamp-on ultrasonic transducer operating in receive mode is disposed on the process pipe. At least two bodies are disposed on the inner wall of the process pipe.

Abstract: An apparatus and a method for monitoring the cleaning of the apparatus for at least one process container and/or at least one process line, and where the process container and/or process line can be cleaned by means of introducing a detergent solution, and with a measuring device for determining a first physical characteristic of the detergent solution, a measuring device for determining a second physical characteristic of the detergent solution, a measuring device for determining the temperature of the detergent solution, an evaluation unit which determines the detergent concentration in the detergent solution via the first and second physical characteristics and via the temperature of the detergent solution, and determines the continuance or termination of the cleaning and/or the re-concentration and/or replacement of the detergent as a function of the detergent concentration that is determined.