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Type 4297

SOUND INTENSITY CALIBRATOR

Sound intensity calibrator is deisgned for on-site sound-pressure calibration and pressure-residual intensity-index verification

Type 4297

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Sound Intensity Calibrator Type 4297 is used for on-site sound-pressure calibration and pressure-residual intensity-index verification.

The device is a complete sound-intensity calibrator in one compact, portable unit with built-in sound sources. The acoustic feedback system automatically adjusts for variations in atmospheric pressure and fulfils the IEC 61043 standard.

Sound Intensity Calibrator Type 4297 enables instruments that measure sound intensity to be accurately calibrated. It is intended for use with Brüel & Kjær Sound Intensity Probes Types 3599 and 3654 with Sound Intensity Microphone Pair Type 4197. The microphones must be used with ¼" preamplifiers.

The Sound Intensity Calibrator can be used for calibration of sound‐pressure sensitivity. To do this, the microphones are both positioned in the calibration chamber. There is no need to dismantle the probe, and both microphones are exposed to exactly the same sound pressure (amplitude and phase). A barometer is not needed because an accurate feedback system holds the sound‐pressure level at a constant value.

The broadband sound source is provided for measurement of the pressure‐residual intensity index spectrum. This is used to assess the accuracy of sound‐intensity measurements.

Measurement and verification of pressure-residual intensity index
Sound-pressure calibration at 251.2 Hz (Type 1 IEC 60942)

Code	Name
-4297--001-	CALIBRADOR DE INTENSIDADE SONORA
-4297---	CALIBRADOR DE INTENSIDADE SONORA

Sound Intensity Calibrator Type 4297	Data Sheets	English
Sound Intensity Calibrator Type 4297	Manual	English

List of accessories available for all variants of this family

Product Code	Description
-4297--001-	CALIBRADOR DE INTENSIDADE SONORA

A característica mais importante e exclusiva do Tipo 4297 é que não há necessidade de desmontar a sonda de intensidade sonora para calibração.

O calibrador foi otimizado para uso com o Analisador de Intensidade Sonora Portátil Tipo 2270 G, mas também pode ser utilizado com sistemas de análise de intensidade sonora.

É fornecida uma tabela de calibração que indica os níveis que devem ser detectados durante a calibração.

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