Vibration Analysis for beginners 2 (how to start your Predictive Maintenance)
Vložit
- čas přidán 5. 08. 2024
- adash.com/
In this video we simply explain how to start your Predictive Maintenance, how to choose measurement point location and what the basic vibration measuring equipment looks like.
You need to consider which machines are critical for your factory’s production. These critical machines should have the greatest priority over the other machinery and you should also consider how much time you can spend on measuring them regularly. It is ideal to measure the machines every week, but we are not living in an ideal world. Despite that, try to schedule measurement of those particular machines at least once per month.
Let’s explain what the basic vibration measuring equipment looks like. It consists of the following parts: vibration meter or analyzer, cable, acceleration (or vibration) sensor with a magnetic base.
You place the acceleration sensor on the measuring point, this converts the vibrations into electronic signals, the signals are transmitted via the cable to the vibration meter or analyzer and the signal is processed into the vibration values which you can read on the device screen.
The measurement point is the place on the machine, usually a bearing housing, where you place the vibration sensor and where you take your vibration measurement. The measurement point location must enable you to take repeatable measurements under the same conditions every time. Measurement repeatability is very important!
To obtain quality and repeatable measurements you should prepare your measuring point on the bearing housing. The best way to do this is to fit all measurement points with measurement pads. A measurement pad has flat ground surface, made of magnetic stainless steel and it is connected to the machine with a special glue which has metallic properties when dry. This ensures good vibration transmission. An acceleration sensor is usually supplied with a strong neodymium magnetic base, which ensures good transfer of machine vibrations to the sensor.
The direction of the measurement point, this means radial and axial according to shaft rotation, is important as well. In an ideal world, you would measure in a vertical-radial direction and a horizontal-radial direction on each part of the machine.
00:00 - 01:09 How to start Predictive Maintenance
01:09 - 01:50 Vibration Measuring Equipment
01:50 - 05:54 Measuring Point location and preparation - Věda a technologie
00:46 haahaahahahahaha I use these videos for my graduation work, finally there was an unexpected reason for me to laugh, and at the same time useful, special thanks from Azerbaijan
The videos are absurdly helpful. Helping me set up maintenance plans and efforts for multiple clients whos facilities we maintain electrically. Thank you!
The way you explained in all your videos is quite phenomenal. Loved it.
Glad to hear that
Great!
Keep it up team Adash!
Prefect and to the point.
Great video! Thanks a lot!
Thanks for this very informative video.
Great! Please keep uploading this type of vedios
Thanks for sharing
Very useful for beginners
thanks a alot
where do we need to place the tri-axial accelerometers in case of monitoring a gearbox, please help!?
Vibration analysis on gearboxes will be surely more difficult due to more shafts, gears etc. Ideally you should measure on each bearing house of each shaft if they are accessible.
Hello Adash! It seems like you're using "cold welding" in order to fix the measuring point at 2:11. So my answer is simple - how does the "cold welding" layer affects on vibration level values? Do your measurements become more precise? And does it affect your high frequency vibration (acceleration)?
It is actually not a cold welding. It is epoxy glue which has the properties like a metal when dry. Your measurements will be repeatable and high frequency bearing signals will be transferred better than using finger tip or magnetic base for curved surfaces.
if the motor doesn't has point of mesure, where can i mesure?
See this video from 3:28 about magnetic base for curved surfaces. The idea is to measure as close to bearing you can in order to get good signal from it. And to have good information about mechanical state of this part of the machine.
thanks for the help
Do you have info on frequencies and what they mean
This is very general question. There is endless types of machines and their applications in particular industries. Every machine or machinery set (e.g. motor with gearbox and pump) generates vibrations on specific frequencies according to their construction and other parameters such as speed, load etc. There are speed frequencies, gear mesh frequencies, bearing frequencies, drive belt frequencies to name a few. Therefore there is no general answer to your question.
When measuring vertical, horizontal, and axial vibration, do you compare each measurement to the maximum limit? or do you calculate some sort of resultant or average then compare it to the max?
This is difficult question as there is no general maximum vibration limit. It depends on machine size, type, speed, load and other aspects.
I almost stopped the video at 0:50. Haha
2:33 Can't we put the sensor on one of the two bolts that secures the bearing housing together? But if we do so, can we get an accurate reading since the bolt head appears smaller than the surface of the sensor?
That is not a good idea. Yes, bolt is smaller than the magnetic base of the sensor. These bolts are not ideally flat and the sensor will rock / swing on them. More over, the bolt actually behaves as a spring and it will damp a lot of high freguency (bearing) signals.
@@AdashCompany Thank you sir. Best regards from Malaysia!
I use of spm equipment for measure vibration
Ok, thanks for information.
Hi
Team your Vibration monitoring system is Compliance withAPI617
Sorry, our systems does not comply with API617. But it does not stop them to be great vibration monitors being sold worldwide.
2/12/2021