[信息与通信]00BENTELY.ppt

Mention both overall average curve, and individual 10 mil quantities These three photos show classic examples of XY radial vibration probes installed at angular orientations of 45 degrees right and left from vertical on a machine with a horizontal rotor. Observe that the probe cables are anchored to prevent them from being disturbed damaged. Securing probe cables is especially important for probes that are inside the machine and subjected to fluid flow (such as a Differential Expansion probe inside a steam turbine casing). Photo 1 shows redundant probes installed with brackets on the face of the upper bearing housing. It is much less common to see redundant probes installed for radial vibration than for axial thrust measurements. Photo 2 shows single probes installed with brackets on the face of the upper bearing housing. This is a very typical radial vibration probe installation. Photo 3 shows single probes installed through holes drilled directly into the upper bearing housing. This type of installation is less common than bracket mounts. It has the advantage of providing an extremely secure and rigid mount for the probes, and eliminating any problem caused by a resonance on a cantilevered bracket. These three photos show classic examples of XY radial vibration probes installed at angular orientations of 45 degrees right and left from vertical on a machine with a horizontal rotor. Observe that the probe cables are anchored to prevent them from being disturbed damaged. Securing probe cables is especially important for probes that are inside the machine and subjected to fluid flow (such as a Differential Expansion probe inside a steam turbine casing). Photo 1 shows redundant probes installed with brackets on the face of the upper bearing housing. It is much less common to see redundant probes installed for radial vibration than for axial thrust measurements. Photo 2 shows single probes installed with brackets on the face of the upper bearing housing.