How Many Types of Vibration Sensors | 6 Types of Vibration Sensors

The performance of an industry is directly linked to its equipment. And if they have problems, their productivity can be reduced and, in some situations, paralyzed. In this context, devices that make maintenance more efficient, such as the vibration sensor, are of paramount importance. Through the device, a trained technician can check the vibrations of machines and equipment, which allows the diagnosis of their condition in a precise and efficient way. Would you like to optimize the maintenance processes in your industry, ensuring the continuity of your production? Read on to discover how many types of vibration sensors exist and understand how vibration sensors can help with this task.

Why are Industrial Vibration Sensors so Important?

It is not new to anyone that during operation, machines and equipment emit a lot of vibrations. However, a less well-known fact is that a qualified technician can interpret these vibrations and, after analyzing them, to diagnose the condition of the machine or equipment in question. This type of diagnosis is only possible because each component of the machine or the equipment in question emits a unique frequency. That way, after isolating that frequency, the technician can know exactly which piece it belongs to.

It is important to note that the level and intensity of vibration presented by the component indicate whether it is working correctly or not. Among the defects that can be identified by this method, we can mention the following:

  • mechanical clearances
  • defective gears
  • pulley failures
  • electrical failures
  • warped axes
  • misalignments
  • imbalances

In addition to these defects, vibration analysis can identify several other faults before they cause more severe damage. Taking this into account, it is easy to understand why vibration monitoring is so important.

How Many Types of Vibration Sensors

How can the Vibration Sensor help my Company with this task?

Although vibration monitoring is paramount, this task is practically impossible without the proper equipment, that is, without the so-called vibration sensor. The item can be described as a device capable of transforming the vibrations emitted – by a machine or by a piece of equipment – into electrical signals, which are taken to a suitable device for recording vibrations.

Based on the data collected, the vibration sensor and the recording device for these vibrations, the technician responsible will be able to assess the state of the components of the machine in question, and thus find out if any of them are failing.

How Many Types of Vibration Sensors

Some of the vibration sensors are;

  • Accelerometer
  • Speed sensors
  • Proximity sensors
  • Global level vibration meter without filter
  • Vibration meter with filter frequency analysis
  • Frequency analyzers

Vibration sensors are used in different projects, machines and applications. Whether you are trying to measure the speed of a vehicle or the power of an impending earthquake, the device you are using is most likely considered a “vibration sensor”. Some of them operate on their own, and others require an external power source. Despite this, they all serve the same purpose with different capabilities. 

It is also worth noting that there are diverse types of vibration sensors. Read on and get to know each one!

Accelerometer

One of the most common types of vibration sensors is accelerometer vibration sensors. They come in a variety of designs, and they can detect a wide range of different vibrations. One of the most popular versions of the accelerometer is the piezoelectric sensor. This type of sensor has a material (such as quartz glass) that emits an electrical charge when it detects changes in pressure. By measuring the amount of electrical charge that piezoelectric accelerometers emit, it becomes possible to determine the amount of vibration that passes at the connection.

vibration sensor types pdf

Speed sensors

A speed sensor is used mainly to measure balance and movement operations in rotating machinery. These sensors are ideal for detecting low and medium frequency vibrations, but not high-frequency ones. Also, a speed sensor does not require electrical input to measure speed force. These sensors do not require regular maintenance to make sure they are working correctly. This is especially true for sensors that are placed on machinery that moves at very high speed, as the sensors have to be firmly anchored to obtain accurate measurements.

vibration sensor working principle

Proximity sensors

Not all vibration sensors are mounted directly on the things they are supposed to measure. A proximity sensor is a version of the vibration sensor that is intended to measure the distance between an object and a probe. If the item is vibrating, it means that it will move towards or away from the probe. And thus pick up the movement of the sensors. It can also detect the extent of the vibration in which it takes place. These probes can be used for small applications like detecting vibrations within machinery, or for larger applications like detecting vibrations in the ground as a sign of earthquakes.

vibration sensor application

Global level vibration meter without filter

This type of sensor can assess the frequency of a machine’s vibration globally, without the use of filters. This means that the device evaluates the vibrations emitted by all components of the machine, looking for signs of defects.

vibration sensor range

Vibration meter with filter frequency analysis

Like the previous sensor, this device also allows all vibrations emitt by the components of a machine to evaluate. The difference between the devices consists in the fact that the 6. Vibration meter with filter frequency analysis can focus its verification on the essential components of the machine; that is, it can use a filter to define priorities.

Frequency analyser

The Frequency Analyzer, in turn, uses only when the range of the Vibration meter with filter frequency analysis is too narrow. The device can perform the Fourier Transform so that the vibrations emit by the machine can convert into a random, periodic, or transient signal.

What are the Benefits of Vibration Sensors for my company?

Now that you understand what a vibration sensor is and know its main models, it’s time to learn more about its benefits. Read on and understand how these devices can optimize the performance of your industry:

More efficient maintenance

The sensor for vibration allows defects in machines and equipment to identify more easily. Thus, they can adequately repair before they cause any more serious effects, such as an accident with a collaborator or production stoppage.

Therefore, by making use of technology, the company’s maintenance service becomes more efficient.

Increased service life of machinery and equipment

With more efficient maintenance, component checks and replacement or repair of defective components will take place in a more appropriate period – at the ideal time for the problem to be resolved.

The result of this efficiency is an extension in the useful life of the machines. And the equipment used by the company.

Cost reduction

Another result obtained by a more efficient maintenance service through the help of the vibration detector. It is once the problems solve before the parts damage; there is a reduction in the waste of these materials.

Also, since the parts are exchanged less frequently, there is no need to stock them in large quantities, which represents a cost reduction in both the purchase and storage of the items in question.

Frequently Asked Questions

How do I choose a vibration sensor?

Your choice of a vibration sensor would be dependent on the intended use. For machines which produce high amplitude vibrations, a low sensitivity sensor would work best; and vice versa.

How do vibration sensors work?

The vibration sensor is equipment widely use in industries. Machines that show some oscillation during their operation identify quickly and efficiently by the vibration sensor, which ends up ensuring that no further damage occurs. Being able to be connected to other equipment, the vibration sensor is essential because it allows the vibration control of the machine automatically. This makes the vibration sensor a necessary item for the management and supervision of the productive processes in the most diverse segments of the industry.

Essential for the protection of industrial rotating machines, the vibration sensor works as follows:

When it detects the vibration of any device, it emits a normal signal which can end up by sending to a digital indicator. Through the signal and the digital indicator, the user of the machine use can have a constant and more efficient perspective. On the state in which it is, allowing a more practical way of intervention by the operator in case it is necessary to prevent problems in the production of the machine that can harm the process in a more damaging way. This makes the vibration sensor indispensable.

What are the 3 main characteristics of vibrations?

The 3 main characteristics of vibrations are:

  • Frequency
  • Amplitude 
  • Acceleration

What is vibration give an example?

Vibration refers to a mechanical phenomenon in which oscillations take place at an equilibrium point. For example, a washing machine shaking because of an imbalance.

What is free vibration?

Free vibration entails that there is no external force causing motion and that initial conditions cause the motion.

Last Words

In conclusion, the vibration sensor use in the process of industrial machine control. Machines that require high running stability can brake power when strong vibrations arise. The aid of the vibration sensor, thus preventing them from damaging. The vibration sensor, if combined with a regulation and control unit. It will be able to operate the machine entirely automatically, which will increase production. And avoid breakdowns and the costs that these entail. Furthermore, the highlight of the types of industrial vibration sensors highlighted above would aid you greatly.

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