Need accuracy info for hydrophone output

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2 total messages Started by Christopher Ruckman Wed, 23 Dec 1992 13:26

#36

Author: Christopher Ruckman
Date: Wed, 23 Dec 1992 13:26

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Can someone provide a rough, ballpark estimate of how accurate a typical
hydrophone might be?  For example, suppose I want to measure the
pressure radiated by a vibrating structure submerged in water.  The
hydrophones would measure the pressure to within ... what?  Half a
decibel?  2 dB?

Actually what I'm looking for is the standard deviation of a typical
sample of measurements from a typical hydrophone.  I don't need an
extremely accurate number for a specific model, just ballpark figures.

Any help would be appreciated!

Chris Ruckman
ruckman@oasys.dt.navy.mil

Re: Need accuracy info for hydrophone output

#37

Author: Angelo Campanella
Date: Wed, 23 Dec 1992 20:07

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"Way back when"   I calibrated my hydophone at Black Mohican Cal Station 
in PA, I was happy to get it within 1 dB.  The readings are usually done to 0.1
dB, but the reliability and reapeatability of all setups and instruments is 
such that 1 dB is the pro forma standard.  You can demand anything you want, 
but it will cost you $$$ and time.  Usually, +- 1 dB will not start any 
arguments.

Ang.

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