MEASUREMENT DEVICE AND MEASUREMENT METHOD

The invention relates to a measuring device and a measuring method, and the measuring device comprises an installation seat which is used for detachably installing a rotor shaft of a centrifugal pump; the moving mechanism is mounted on the mounting base, and the moving mechanism can reciprocate in the first direction; the detection device is installed on the side, away from the rotor shaft, of the installation base. According to the measuring device, the middle water chamber cover plate is detached, the rotor shaft is installed through the installation base, the moving mechanism abuts against the inner side wall of the middle water chamber pump body along the two opposite sides in the first direction, and the counter-acting force of the inner side wall of the middle water chamber pump body pushes the rotor shaft and the installation base to move; and the distance between the second measurement reference surface and the detection device is measured through the detection device, and the distance can be equivale