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J Appl Physiol 47: 462-467, 1979;
8750-7587/79 $5.00
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Journal of Applied Physiology, Vol 47, Issue 2 462-467, Copyright © 1979 by American Physiological Society

ARTICLES

A technique for measuring frequency response of pressure, volume, and flow transducers

A. C. Jackson and A. Vinegar

A device and methodology is presented for testing the frequency response of pressure, volume, or flow transducers. Also reported are responses of selected transducers of all three types over the range of 2--120 Hz. Several pressure transducers tested had good frequency response when connected to the test system with a minimum of interconnecting fittings; others did not. Use of additional connectors degraded the response as did the addition of air-filled catheters. The frequency response of the pneumotachometers tested were influenced largely by the response characteristics of the associated pressure transducer and interconnecting fittings. These results emphasize the need to test the response characteristics of any transducer with specific connectors and fittings that are to be used to make the actual measurements of pressure, volume, or flow.


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