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How to Set up Analysis Parameters in Machine Vibration

Machine vibration is caused by the movement of machines and their components, such as fan blades and belts. Vibration during machine operation should be monitored, as it can be used to detect any loose parts, corrosion or cracks present in the machine. If left alone, these flaws can cause accidents that may result in physical injury. Machine vibration is measured by a digital vibration analysis instrument. Enter the parameters into the instrument to set it up and measure machine vibration.

Things You'll Need

  • Digital vibration analysis instrument
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Instructions

    • 1

      Turn on the digital vibration analysis instrument. Select "Set Parameters." Select "Domain." Select "Frequency."

    • 2

      Select "Trigger Type" under "Set Parameters." Select "Free run" to take continuous vibration measurements. Select "Single" to measure a single cycle of the machine.

    • 3

      Select "Settling Time" and enter the amount of time you wish the instrument to wait before it takes a measurement.

    • 4

      Select "Fmax." Enter a high Fmax value if the machine has a high operating speed. For instance, to measure vibration of a machine that doesn't have gear teeth, fan blades, pump vanes or bearings, the Fmax value needs to equal to 10 times the operating speed of the machine. If the machine runs at 10,000 rpm, the Fmax entered should be 100,000 rpm. If the machine does have gears, fan blades, pump vanes or bearings, the Fmax value needs to be equal to three times the number of gears and fan blades multiplied by the operating speed of the machine.

    • 5

      Select "Spectral Lines." Enter "400." For a high Fmax, enter "3200" for a low Fmax, enter "400."

    • 6

      Select "Overlap." Enter "50 percent."

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