There are a number of different
types of vibration sensors
on the market, including a variety of vibration sensing technologies, as well as both wireless and wired sensors. It is important to choose a sensor that fits your needs and your budget. The following is a high-level overview of the different types of vibration sensors on the market today.
Accelerometer Vibration Sensors
Accelerometers are the most commonly used kind of vibration sensor. They measure changes in the velocity of your assets’ vibrations.
Accelerometer vibration sensors
are highly sensitive and can pick up on even subtle changes in vibration.
There are many different kinds of accelerometers, including:
Vibration Meters are small, hand-held devices that can measure vibrations on an as-needed basis.
often do not directly attach to your machinery, though some can be configured that way. Instead, technicians use them as part of routine inspections. Vibration meters often include accelerometers.
Vibration meters are convenient and accurate. However, they cannot provide data on a continuous basis, the way wireless vibration sensors can. This means that vibration meters alone can’t enable a predictive maintenance strategy.
MEMs Vibration Sensors are widely used because of their frequency response. They excel at picking up vibration frequencies between 0 and 1,000 hertz. Changes in those lower frequencies typically point to problems with imbalance, misalignment, and looseness. MEMs sensors are also cost-effective, offer a long battery life, and have high IP ratings for reliable operation in wet or dusty industrial environments.
Piezoelectric vibration sensors, also known as piezo sensors, are often lauded for their performance even in extreme environments. Piezoelectric vibration sensors also pick up on higher frequencies, especially frequencies above 1,000 hertz. Changes in these higher frequencies usually indicate problems with gearboxes and motor bars.