enabling the device feedback from the device indicates that there is sufficient pressure available the probe fig1 and fig2 may now be deployed when the deployment switch in engaged a solenoid will open allowing a cylinder to pressurize the pressure will move a piston fig4 away from the container pushing against the installation lever fig4 the lever fig4 in turn will push the probe towards the container an expanded teflon seal will contact the container first its pressure against the container increasing as the probe is pushed farther in the spring behind the seal keeps the seal pressed tight as the probe tip passes through the seal the probe tip is then pressed through the container wall exposing it to the material inside the container barbs on the probe tip will compress as they pass through the container wall and expand after passage there is a small port in the installation tool cylinder allowing a controlled leak of pressurized gas as the gas escapes the pressure that moved the piston fig4 will subside allowing the probe spring to pull the probe back drawing the barbs into contact with the container wall the barbs hold the probe securely in position maintaining spring pressure against the seal a proximity switch confirms to the technician by signaling the remote unit that the probe has been properly installed if the probe is equipped with a pressure transducer advising the.