A measurement system characterized by: a sensor amplifier; a conversion unit in the sensor amplifier to which a plurality of sensors configured to output analog signals corresponding to a physical quantity of a measuring object is connected, the conversion unit being configured to convert the analog signals inputted from the sensors into digital signals; wherein the sensor amplifier is configured to determine whether the amount of data processing of the digital signal is more than the prescribed value based on setting content for a predetermined rule of a data process; a sensor amplifier data processing unit in the sensor amplifier, the sensor amplifier data processing unit being configured to compute the digital signals for part of the plurality of sensors based on setting content for a predetermined rule of a data process, and based on the determination of the amount of data processing of the digital signal; a sensor amplifier communication unit in the sensor amplifier, the sensor amplifier communication unit being configured to transmit the unprocessed digital signals and the computed digital signals to the outside of the sensor amplifier; a main body communication unit (85, 86) in a main body unit paired with the sensor amplifier, the main body communication unit (85, 86) being configured to receive the unprocessed digital signals and the computed digital signals transmitted from the sensor amplifier; and a main body data processing unit in the main body unit, the main body data processing unit being configured to compute the unprocessed digital signals for the rest of the plurality of sensors out of the received digital signals. a sensor amplifier; a conversion unit in the sensor amplifier to which a plurality of sensors configured to output analog signals corresponding to a physical quantity of a measuring object is connected, the conversion unit being configured to convert the analog signals inputted from the sensors into digital signals; wherein the sensor amplifier is configured to determine whether the amount of data processing of the digital signal is more than the prescribed value based on setting content for a predetermined rule of a data process; a sensor amplifier data processing unit in the sensor amplifier, the sensor amplifier data processing unit being configured to compute the digital signals for part of the plurality of sensors based on setting content for a predetermined rule of a data process, and based on the determination of the amount of data processing of the digital signal; a sensor amplifier communication unit in the sensor amplifier, the sensor amplifier communication unit being configured to transmit the unprocessed digital signals and the computed digital signals to the outside of the sensor amplifier; a main body communication unit (85, 86) in a main body unit paired with the sensor amplifier, the main body communication unit (85, 86) being configured to receive the unprocessed digital signals and the computed digital signals transmitted from the sensor amplifier; and a main body data processing unit in the main body unit, the main body data processing unit being configured to compute the unprocessed digital signals for the rest of the plurality of sensors out of the received digital signals.