Guys, take a look and tell me how to interpret this
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Everyone, take a look – how should we interpret this vibration spectrum? 1. What does “overall trend” 7.4 mean? 2. What does “Basic amplitude: 2.152” mean? 3. What does “Frequency: 50.83” mean? 4. What does “Order: 1” mean? 5. In the chart, what do the red Arabic numerals represent? 6. How should the relationship between the horizontal axis and the vertical axis be interpreted? Thank you to the masters for their guidance! :lol
Please have the supplier carry out vibration monitoring of the moving equipment; generally, suppliers mainly offer spectrum analysis services
This can only be identified by professionals who are skilled in spectral analysis.
1. What does “overall trend” 7.4 mean? “By “overall trend,” does it refer to the comprehensive vibration value? 2. What does “basic amplitude: 2.152” mean? “The basic amplitude value is incorrect; it should be the fundamental frequency amplitude. The fundamental frequency is calculated by dividing the rotational speed by 60. For a speed of 3000 revolutions per minute, the fundamental frequency is 50 Hz. 2.152 refers to the vibration amplitude at this fundamental frequency. 3. What does “Frequency: 50.83” mean? Frequency – as mentioned above, it’s 4. What does “order: 1” mean? Multiples of the fundamental frequency; 1 represents 1 time the frequency. 5. What do the red Arabic numbers in the chart represent? The red numbers represent multiples of the fundamental frequency, 6. How should one interpret the relationship between the horizontal and vertical axes? Horizontal axis – frequency; Vertical axis – vibration value at the corresponding frequency
The first and second harmonics are high; consider rotor unevenness, rotor bending, and poor shaft alignment. Let’s take a look at it in combination with the phase diagram, as well as the fundamental frequency graph during the device’s start-up and shutdown phases.
Is there no specialized service provider to provide interpretation and analysis?
1. The \"basic amplitude: 2.152\" refers to an amplitude of 2.152 at the rotation frequency; the rotation frequency of your device is 3050/60 = 50.83 Hz. 2. The amplitudes for settings 1×, 2×, and 7× of the device are relatively high. 4. What does “Order: 1” mean? It’s not very clear; it might refer to the rotor operating at the first-order critical point. 5. In the chart, what do the red Arabic numerals represent? It’s a multiple frequency, that is, a multiple of the rotational speed. 6. How to interpret the relationship between the horizontal axis and the vertical axis: the horizontal axis represents frequency, while the vertical axis represents amplitude. The rotor is likely to be dynamically unbalanced. Just learned it.