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Water 'shaker'

Water 'shaker'

Water 'shaker'

(OP)
I'm looking for a device who can generate a controled presure pulse in water in a pipe system? Does anyone know if these devices excist? Company's???

Thanx,
Curry (The Netherlands)
  

RE: Water 'shaker'

Depends what sort of pressure you are looking for, and at what frequency. Sonar systems use them, and so do underwater seismic surveying systems, although I doubt you will be interested in the latter.

Cheers

Greg Locock

RE: Water 'shaker'

(OP)
The frequency's I'm looking at are not so high as sonar uses. I'm looking at frequenties below 500 Hz.

Pressures are all below 10e5 N/ m2

RE: Water 'shaker'

You basically need a waterproof loudspeaker.  How much power do you need?

Cheers

Greg Locock

RE: Water 'shaker'

A waterproof loudspeaker won't work, although a moving coil transducer (say a Ling shaker) driving a metal piston might do it.  You only need around 20 um displacement to produce a 0.1 GPa plane wave at 500 Hz. A typical sonar transducer won't work as it can't move enough.

Broad Arrow Acoustics
http://home.attbi.com/~pheon

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