Introduction And Description; Introduction; Description - BRUEL & KJAER 4297 User Manual

Sound intensity calibrator

Hide thumbs

Table Of Contents

Table of Contents

1.1

Introduction

Sound Intensity Calibrator Type 4297 is used for on-site sound pressure calibration and pressure-

residual intensity index verification.

The most important and unique feature is that there is no need to dismantle the sound intensity

probe. The calibrator is optimized for use with Type 2270-S and Type 2260 E Investigator™ sound

intensity systems for phase enhancement, but it can also be used with sound intensity analysis

systems such as PULSE™.

Type 4297 is a complete sound intensity calibrator in one compact, portable unit with a built-in

sound source. A barometer is not required as the acoustic feedback system automatically adjusts

for variations in atmospheric pressure. Type 4297 fulfils the requirements:

•

IEC 61043 –1993; Electroacoustics – Instruments for the measurement of sound intensity –

Measurements with pairs of pressure sensing microphones

•

ANSI S1.9 – 1996; Instruments for the Measurement of Sound Intensity

Table 1.1

Comparison of various capabilities in sound intensity calibrators

Type

Pressure

Number

Level

4231+

Yes

DP-0888

3541-A

Yes

4297

Yes

1.2

Description

1.2.1

General

Sound Intensity Calibrator Type 4297 enables instruments that measure sound intensity to be

accurately calibrated.