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But what is vibration?

Well, vibration is static and dynamic imbalance of equipment. It is the oscillation, or moving back and forth of an object in simple words. And this word is somehow used as a measure of how well things are running.

The principle characteristics of the vibration signal that one measures are-

  1. Frequency
  2. Phase
  3. Amplitude

 

To explain the full range of vibration measurements will be quite fascinating yet grueling so here are some brief explanations and suggestions of vibration measurement systems available for a test engineer, or anyone in need of vibration measurements, like you! And I believe that these products meet the ranges of vibration measurements needs, but they might be overload for some applications. These products actually don’t have the functionality that some applications require.

 

But for now, let’s move on with different, expensive ways of vibration measurement systems – I prefer proaxion, you should take a look at their website as I wouldn’t be able to do them justice.

 

  1. TI’s Sensor Tag:

Sensor Tag kit makes you realizes your cloud-connected product. The new Sensor Tag also includes 10 low-power MEMS sensors in a tiny red package. It can be expanded with DevPacks that makes it easy to add your own sensors. By connecting to the cloud with Bluetooth low energy you can get your sensor data online in 3-4 minutes. This sensor is user-friendly with iOS and Android app, with no such experience required to operate it. It is in fact pocket friendly too, costing a mere $30! It is wireless (Bluetooth).  But it has a very slow sample rate i.e. 10Hz and is meant more of an Internet of things (IoT) development platform than a vibration measurement system.

  1. Extech’s VB300 Vibration Recorder:

This very product comes in less than $300, so it can be an effective first option at computing your vibration environment. This VB300 is cost effective vibration measurement instrument and is an entry level vibration recorder. It has a limited sample rate i.e. up to 200 Hz and has a total storage of 4Mbit or 112K samples per axis, but for some applications this much limitation is adequate. It has a real time operation, including spectral data using FFT (Fast Fourier Transform) and a trigger option to start recording. But also it has a poor quality recording and the replaceable battery is a hard to buy.

  1. Fluke 805 Vibration Meter:

This product is very much different than the other products discussed above. It doesn’t really log any data and will keep only the last 3,500 samples. It offers real time vibration analysis so as to make quick and accurate maintenance decision. It is costlier i.e. $2000 and above all, it doesn’t offer information required to do proper vibration analysis. It has a fast rate i.e. 20,000 samples per second and can be connected to mobile applications.

  1. MSR165 Vibration Data Logger:

It has two accelerometer options unlike any other i.e. ±15g or ±200g, to meet either vibration or shock testing requirements.  It has a higher sample rate option i.e. 1,600 Hz as compared to many other data loggers on the market at present. It has an expandable storage and battery option which ultimately offers a great solution over the “traditional” data acquisition systems. It also has a very long battery life but has a higher pricing, especially with added sensors/options in access to $2000.

  1. Mide’s Slam Stick Vibration  Data Loggers:

It has the highest sample rate among data loggers i.e. up to 20,000 samples per second per axis. The battery life approaches one full day which is actually unreliable for transportation, but can be powered through the micro USB to extend the recording time. It includes a temperature and pressure sensor at free of cost. Easy to use and is very durable. It is cost effective at $1,000 to $2,000. It doesn’t include outer sensor.

  1. National Instruments Based Vibration Measurement System:

This product is designed specifically to interface with integrated electronic piezoelectric (IEPE) accelerometers. This module comes in at the cost of $1,823 but the entire product will cost around $6,000. It acquires 4 to 5 times the physical space and weight. It has a very high sample rate i.e. up to 51,200 samples per second per axis. It has wireless streaming of vibration data over Wi-Fi. But the software can crash during data acquisition and not portable.