A vibration analyzer is a tool for measuring, storing, and diagnosing the vibrations emitted by a machine. The function of this tool is to identify and predict possible faults in industrial machines, as well as the causes that trigger vibrations. In accordance with ISO vibration standards, a good vibration analyzer must meet two criteria, namely the consideration of the observed machine vibration and the change in the size of the vibration.
However, these are not the only two criteria, you will also need to know the other specifications of the vibration analyzer to find a standard fit. What are the criteria according to the ISO?
1. Number of Input Channels
If you want the best vibration analyzer according to ISO vibration standards, the first criterion to consider is the number of input lines. Usually, many vibration analyzers are sold with a choice of two to four input lines.
The two-channel vibration analyzer is sufficient for functions such as phase analysis, balancing, ODS, and Bode graphing. Meanwhile, the four-channel type analyzer works well for triaxial accelerometers as well as simultaneous two-plane balancing. Meanwhile, the type of analyzer with one input channel is no longer relevant because it cannot perform balancing techniques, Bode graphics, and misalignment.
2. Line of Resolution
Choosing a vibration analyzer that complies with ISO vibration standards can also be seen from the resolution line. You must understand this one criterion because it will affect the performance of the analyzer when it is used in the machine. The number of lines of resolution determines how many points the spectrum will integrate.
Note, however, that the line of resolution does not specify a frequency range. That means, the lower frequency ranges do not always have good resolution. Likewise, vice versa, the high-frequency range does not always indicate a bad resolution.
3. Important Functions in the Vibration Analyzer
The vibration analyzer has many parts with their respective functions. However, when you are going to decide to buy, first check the following three parts:
- Operating Deflection Shapes (ODS)
The function of this section is to simulate the movement of the entire machine in a 3D image. Although this feature is relatively less common in a vibration analyzer, it is very good when used for diagnosis.
- Bode Chart
A Bode chart is a function for diagnosing resonance and critical speed during engine slide down used on machines.
- Orbit
This function is to analyze two channels in which two sensors are positioned at a position of 90 degrees. Orbit helps understand the behavior of the engine shaft inside the bearings, as well as the modes of vibration and resonance when performed in a run-down test.
- TWF Circular
Circular TWF (Time Wave From) is a feature with a function for the interpretation of vibration patterns in very low-speed systems, such as gearboxes. Basically, TWF is a time-domain graph plotted in a circular chart, where you can choose the time to complete a full rotation.
4. Product Technical Support and Pricing
This last point is an additional consideration outside of ISO vibration standards. You should choose a vibration analyzer with technical support, as it cannot be denied that you will always need assistance with the equipment used on the machine. So, make sure there is a relationship with the vibration analyzer distributor or manufacturer as a guarantee of post-purchase support for the product.
Then, also consider the price of the vibration analyzer to be purchased. Make sure it fits your budget and industry needs. Prices for these products often include systems and accessories, software, product license fees, technical support costs, parts, and updates. Think about a long-term budget so that when you need an update or repair of spare parts, you won't be bothered.
Currently there is a new technology, namely by using Artificial Intelligent to monitor vibration in equipment / machines with the V-MER Smart Vibration Analyzer, as we can see in the following video:https://www.youtube.com/watch?v=koNp5tpgIb8&t=78s&fbclid=IwAR0hX0Ue2tRnoIglT-qdQN9_-JS6Kx4Xf244O6juHH6rlYv_W0GuStO3CB4
So, those were the tips for choosing a vibration analyzer in accordance with ISO vibration standards and in terms of technical and cost support. If your industry requires a vibration analyzer for machine vibration analysis, use the V-MER Smart Vibration Analyzer from Hyprowira.
