What is a Vibration Monitoring System?
A Vibration monitoring system (V.M.S.) is a pro-active and low-cost solution to protect the surface of the “Yankee” dryer from expensive repairing damages (known as “chatter-marks”) by keeping under technical surveillance the “creping Process”.
Tissue Expertise L.L.C. supplies an “online-Vibration Monitoring System” for this specific application along with technical training for tissue machine process engineers and floor workers as well.
Our V.M.S has the capability to show on a computer screen the abnormal vibration on the “F.F.T. Domain”, meaning the system will trigger an alarm in the early stages of the increase in frequency level and, this way, help to diagnose the source of the problem. Also, the V.M.S. will record all the episodes, allowing posteriori “Time Domain” review to understand when and how the event started (a “history” of the events, so to speak).
Real-time Data Display
The V.M.S. is always connected with a computer; the screen will display the vibration levels in real-time with colorful bars (where alarms were set previously).
Each bar represents a band of frequencies. We can track and create as many vibration files as we consider necessary.
Later, it is possible to compare the evolution of vibrations across time with an initial normal footprint.
Spectrum
A vibration monitoring system is a set of tools used to measure one or more parameters in order to identify changes in the behavior of the machinery.
In Fact, the main purpose of these systems is to help in scheduling the maintenance activities based on a process called Predictive Analysis.
History File
The plot above shows another important tool from the V.M.S. It records all the events on the memory. At your convenience, you can download all the data recorded and create a “history” file. Doing so frequently, you will have several “history” files from different periods to perform comparisons analyses over time.
You can then merge all of them and create just one broad file for a longer period where you can see the progress of the vibrations on a timeline (Time domain). This tool is useful to make analysis from other perspectives, particularly “trials” on the machine such as add-ons, blades, felts, wires, etc. to more certainly make decision that will have lasting, perhaps damaging, effects on the machine.