Vibration sensors, like most sensing devices, are normally sensitive to minor vibration that can either periodic or random-noise-induced vibrations. They measure such vibrations using an accelerometer that computes the time and frequency of the vibrations. Common vibration sensors include random vibration sensors, which are usually used in ships and robots, and contact sensors, which are used in many production processes. Non-contact vibration sensors detect vibration relative to other support structures or shafts. All of these sensors have one common factor: all of them are used in motors.
Vibration measuring is a tricky process because it requires a sensitive measuring device with high-frequency resolution. The problem is made worse by the fact that all vibrations produce sound waves that cannot be readily heard by the human ear. For this reason, vibration sensors must operate in a highly controlled environment. In order to maximize sensitivity and minimize noise, the best environments for vibration measuring devices are enclosed assemblies. For large assemblies, vibration measurements are often done on a vibration basis only.
Most vibration sensors have an effective range of several hundred volts. To determine their accuracy, the measurement system uses a mathematical model to calculate the force of each vibration. As an example, if a force is measured at one meter from a component, the corresponding value of the component at one second will be calculated. The measurement system then uses this value as a baseline to calculate higher values of acceleration and deformation. While measuring static components, this calculation method is sometimes applied to dynamic ones. For this reason, a wide variety of vibration sensors exists, and the exact type of measurement system required will depend on the application and the environment.
The three types of vibration sensors include the passive static probe, the active static probe, and the bipolar sensor. The passive static probe is designed to detect the vibration of a conducting material without using a constant current power supply. Because the static probe does not require a constant current power supply, this type of sensor can be operated from a variety of batteries, including disposable ones. Although this type of sensor is less sensitive than the bipolar type, it is better able to detect high frequencies.
The next type of measurement device is the active device, which measures acceleration or change in velocity based on a signal. There are four categories that this category falls into resistive, capacitive, electromagnetic, and piezoelectric. Capacitive vibration sensors use one or more transducers to detect changes in potential. Capacitive vibrators measure the pressure change caused by a varying voltage level. Electromagnetic vibration sensors work by detecting the change in energy due to a change in a magnetic field. Piezoelectric based vibration sensors only measure the change in capacitance.
You can get a lot more information about vibration sensors by talking with someone who knows more than you do. If you know enough about the types of measurement devices available, you can find out what they do and how they work, but you cannot learn how to read a pH balance by reading a resistive sample or a capacitor sample. The professionals have all the answers. They know that pH balance samples and what capacitance sample should be used for the proper analysis.
Some machinery requires vibration sensors to ensure productivity and accuracy. If you are the owner of such machinery, you probably are aware of the need for effective condition monitoring of your industrial equipment. However, some owners might not be as familiar with the measurement of vibrations, which could cost you a considerable amount of money if you make an incorrect measurement.
You can buy vibration sensors online and from GlobalMec Australia (see link below). You can also rent them from a hardware store. When you shop for vibration measurement systems, you should first determine the kind of sensor that will best serve your needs. Don’t forget to factor in installation costs. You will also have to consider other parameters, such as the distance between the sensor and the equipment, the operating temperature and the humidity. All these factors will affect the size and cost of the unit.
Visit GlobalMec For the best vibration sensors in Australia.