The device (Retractor) «Monicor-R-ST-250» operating with block valves, is developed to install and deinstall various sensors (gravimetric, LPR, ER) for corrosion researches using the system of weld-in fitting -sealing plug, which is sealed in the fitting due to its preload by external screws with a cone located in the fitting.

    The device allows the installation and deinstallation of the plugs with a sensor without stopping the pumping process at pressures up to 25 MPa.