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    Reverberation Time RT60
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Balancing

Balanced rotors are essential for smooth operation of rotating machinery. Unbalance will create high vibrations, reducing machine life and causing material defects. Balancing module is a great tool to eliminate unbalance on site reducing long down times.

IEPE
IEPE
Charge
Charge
Voltage
Voltage
Counter/Encoder
Counter/Encoder
RPM
RPM
Acceleration
Acceleration

Main Features

  • SINGLE OR DUAL PLANE BALANCING ON SITE: Perform single plane (narrow disc) or dual plane (long shaft) balancing.
  • SIMPLE STEP-BY-STEP PROCEDURE: Users are guided through the balancing steps for flawless operation including easy setup of angle sensor with live preview. Multiple modules can be combined for multi-axis balancing to save time and greatly improve the quality of balancing.
  • RICH VISUALIZATION: Results from all runs are displayed for an easier decision for the next steps. Live visualization of unbalance vector is available to judge the stability of the measurement. RPM display has a colour indicator to easy determine in-out range.
  • WEIGHT SPLITTING: Adds possibility to split needed balancing weight into equidistantly spaced points, for example, holes on the rotor.
  • STORAGE OF INFLUENCE VECTOR: Influence vectors can be stored that the test run is not needed for repetitive balancing of the same machine.

Step-by-step Balancing Procedure

Balancing acts as a sequence: First record the actual status, then add a trial mass, the last step is to add the calculated correction mass at the appropriate angle. Steps can be repeated if required. 

On the top you see the current step, with an explanation which action has to be taken, on the right, there are the interactive buttons “Back”, “Next”, “Measure”.

The table will fill with the results after each step. The polar plot shows the vibration levels (amplitude and angle) of each run (the unit depends on the input, mm/s or mm/s² or g).

Single or Dual Plane Balancing

Depending on the machinery, single or dual plane balancing is needed. Selecting one plane or two plane balancing generally depends on two factors:

  • One of the factors is the ratio of the length of the rotor to the diameter of the rotor.
  • The other factor is the operating speed of the rotor.

Auto-generated Measurement Screen

When you have set up the balancing module in channel setup, there is an automatically generated display called “Balancing” in Measure mode.

This is the rotor balancer visual control, with channels automatically assigned from the math module.

Weight Splitting

When you have a rotor/plane with a certain number of slots/blades/holes, where the weights can be mounted, it would be much easier just to know the position number and split the weights instead of the absolute angle.

This can be done by selecting “Divide plane xx to xx” from the properties. 

Link Multiple Instances

When amplitude and phase of the signal are not stable – you have to find a different location for mounting the sensor, to get a better signal.

To save time, you can mount multiple sensors and measure them at once, and then decide which signal to take. The whole procedure is the same, but you only need to operate one VC (visual control), all the other instruments will follow, of course providing different results.

Initialize with system characteristics

If balancing was already done on a particular shaft, and the system characteristic is known, a trial weight run is not necessary once again; the system characteristics parameters can be entered manually instead, to get the correction mass calculated immediately.

This could be used if a shaft is balanced multiple times at a certain interval. The system characteristics describe the relation between mass and vibration.

Free Online Training

You can learn more about sound level measurement at Dewesoft PRO online training by navigating to the Balancing PRO training course.

Dewesoft PRO training is a free online training for measurement professionals. Learn how to measure signals, data processing and how to use Dewesoft products. Online PRO training is completely free. 

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