Plug and Measure is an ISM feature that enables fast, error-free sensor installation at measurement points. In analog analytical measurement systems, a senor’s calibration data is held in the transmitter it is connected to. It is not possible to calibrate a sensor on one transmitter and use that sensor on another transmitter unless calibration is done again. ISM sensors retain their calibration data, which means a calibrated sensor can be connected to any ISM transmitter and no further calibration is required (unless a process calibration is necessary). Once a calibrated ISM sensor is connected to an ISM transmitter, the transmitter reads the calibration and other data from the sensor and configures itself automatically. Therefore, the system is ready to measure again very quickly.