Vibration monitoring unit

movement

The amplitude of the radial vibrations on the shaft and its radial position are the main indicators of the overall mechanical condition of rotating machines. Many machine malfunctions can be detected, with these measurements: rotor unbalance, misalignment, bearing wear and friction. Some machine types produce vibrations that are not easily detected by measuring the relative dynamic movement of the shaft relative to the bearing. Depending on the rigidity of the bearings, vibrations can be directly transmitted to the bearing housings. This can also occur with displacement amplitudes that are not detected by shaft measurement methods. In such cases, a piezoelectric accelerometer or a seismic velocimeter is used to measure the severity of the bearing vibrations. Shaft and bearing vibration monitoring is specified in ISO-7919 and ISO-10816 respectively and is applicable to all rotating machines, such as hydro turbines, gas turbines, steam turbines, pumps, fans, cooling towers, etc. Wear of roller bearings Misalignment Damages or wear of plain bearings Misc. tribological issues on plain bearings 2 proximity probes or absolute vibration sensors installed at 90° X/Y located in the radial direction. MPS: Min gap CMS: Blades profile and polar view Hydrogenerators Gas & steam turbines Pumps, fans & cooling towers Piezoelectric acceleration and velocity sensors Linearized velocity sensors Smart proximity probes