Peristaltic Pump problems Solved =>Noisy Pump 🔊

Peristaltic Pump problems Solved

>Noisy Peristaltic Pump

Noise is subjective. This is why using a sound level meter is not enough. We don't get a full story from a dB reading. NOTE: dB scale is logarithmic. In decibel terms, a doubling in loudness corresponds to roughly an increase in 10 dB. It doesn't matter whether that increase is from 40 dB to 50 dB or 70 dB to 80 dB.

Peristaltic Pump Noise

Noise sometimes is welcomed. It indicates that the pump is turning. In most cases  noise is not welcomed for example  next to a hospital bed during night with a patient recovering from an operation. This article focuses on the applications where minimising the noise is the key objective. 

Spoiler alert: There is still no “perfectly” silent peristaltic pump on the market, if you think there is please let us know.

Solution to the problem: 

  • Not all pumpheads are created equal so unfortunately the only way of finding your perfect silent peristaltic pump-head for your application is to do some  testing. Let us know we might have done the testing already and will be able to share the findings.  
  • Set up the test conditions exactly like in your application: pressure, fluid, tubing, flow rate etc. All this can influence the noise level coming from the pump. 
  • Determine where the noise is coming from. It could be from the motor / gearbox. That is why we recommend direct drive peristaltic stepper motor solution. No gearbox, no noise from gearbox - simple. Our silent stepper motor controller stops the stepper motor from “singing” making SilentControlBoards direct drive solution for peristaltic pumps super quiet. Once you've determined the noise is coming from the pump-head not the drive you can proceed to the next step. 
  • Once you determine that the noise is coming from the pump-head not the gearbox/drive simple contact the supplier of the pump-head with a video of the problem. They should be able to solve the problem immediately if they can't, it usually means that this noise level is expected. In this situation is best to try a different pump-head model or supplier.
  • Try to avoid continuous operation at maximum speed. Think of choosing a bigger a pump-head. You will need to spin the pump-head at a slower speed this usually reduces the noise. The noise very often comes from rollers bouncing of the sides of the rotor. 
  • There are some black magic solutions like using, rubber washers etc. You can try them at your own peril. 


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