ISA 37.10

This standard covers piezoelectric (including ferro-electric)pressure transducers and piezoelectric sound pressure transducers.Pressure and sound-pressure types could be the same instrumentdiffering only in the method of calibration and manner ofspecifying performance. With the exception of certain impedance andcharge measurements, this standard is also applicable topiezoelectric transducers with built-in amplifiers.

Sound pressure transducers sense and measure the pressureoscillations within an elastic fluid medium experiencingstress-strain waves. When installed near the sound source or in thewall of a test object, the transducer behavior relates to itspressure response. When installed in a sound field, considerableinteraction occurs at higher frequencies during the measuringtransaction, changing the quantity being measured and relatingtransducer behavior to its free-field or diffusefield response.Both aspects of transducer behavior are covered in thisstandard.

Included among the specific types of piezoelectric pressuretransducers to which this standard is applicable are thefollowing:

a) Piezoelectric pressure transducers for transient pressuremeasurements

b) Piezoelectric pressure transducers that, in conjunction withassociated electronic equipment, have quasi-dc response to gagepressures

c) Piezoelectric transducers for sound pressure levels in excessof 100 dB overall re 20 μ Pa associated with fluid-borne noise

Terminology used in this document is defined in ISA-S37.1,except that additional definitions particularly applicable topiezoelectric pressure and piezoelectric sound-pressure transducersare defined in 4.3 of this document.

Purpose

This Standard establishes the following for piezoelectricpressure and piezoelectric soundpressure transducers.

Uniform minimum general specifications for describing design andperformance characteristics 

Selected uniform acceptance and qualification test methods,including calibration techniques

Uniform procedures for the presentation of transducer testdata

A drawing symbol for use on measurement system electricalschematics (See Note in Section 3.)

Edition:

82

Published:

01/01/1982

Number of Pages:

36

File Size:

1 file , 420 KB