Software for taking and displaying measurements; software for controlling measuring instruments; software for calibrating measuring instruments; software for the servicing, maintenance and/or prognosis of the lifespan of measuring instruments; software for the documentation and archiving of measurements and the maintenance of measuring instruments; software for assessing measurement data; software for exchangng measurement data, measurement documentation and measurement processes for measuring instruments in a network; software for controlling measuring instrument transmitters; software for calibrating a measurement instrument piloted by a transmitter; software for the servicing, maintenance and/or prognosis of the lifespan of transmitters for measuring instruments; software for the documentation and archiving of measurements and maintenance of measuring instruments, connected by a transmitter; software for setting up, configuring and installing measuring instruments and transmitters for measuring instruments; software for the documentation of measuring instruments connected to transmitters and of transmitters; software serving as a user interface with transmitters; software for recording measuring data, apparatus data, apparatus images, apparatus videos and diagnostic data of measuring instruments piloted by a transmitter and of transmitters; software for transmitting measuring data, apparatus data, apparatus images, apparatus videos and diagnostic data of measuring instruments piloted by a transmitter and of transmitters; software for creating and transmitting data sets comprised of data from measuring instruments, transmitters, accessories connected to these instruments and/or data generated by these instruments; software for creating and transmitting data sets for use in process automation, inventory management, facilities management, modeling and/or simulation of processes and installations monitored by measuring instruments; software for process automation, inventory management, facilities management, modeling and/or simulation of processes and installations controlled by measuring instruments; the aforementioned measuring instruments and measures including pH measurements, redox measurements, oxygen measurements, carbon dioxide measurements, conductivity measurements or turbidity measurements and measuring instruments therefor