EC6686 | ENTEK DUAL ECCENTRICITY MONITOR

C6686DUAL ECCENTRICITY MONITORSERIES 6600The 6686 is a dual channel eccentricity monitor, which is used to evaluate the bow or mechanical runout of a shaft. This bowing is often caused by the shaft weight, when it is at rest between supporting bearings. As the shaft begins to rotate, this bowing results in vibration measured as eccentricity. Eccentricity is also an indication of bearing wear and heavy preload, which can be caused by misalignment. Finally, the 6686 can provide an indication of rotor stability, since eccentricity provides a direct relationship with the shaft attitude angle.to monitor thermal expansion of machine casings. The absolute shell expansion measurement is important for steam turbines during startup and shutdown cycles to ensure that the turbine case expands at the specified rateand that the growth is uniform on both sides of the machine.Excessive expansion rate or nonuniform growth can result in serious damage to the machine and possibly the machine foundation. In addition to absolute shell expansion monitoring, the 6687 can also be used for monitoring guide vane position.