ISO 5347-15:1993 PDF

Methods for the calibration of vibration and shock pick-ups — Part 15: Testing of acoustic sensitivity

Название (английский):

ISO 5347-15:1993

Methods for the calibration of vibration and shock pick-ups — Part 15: Testing of acoustic sensitivity

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 2
Дата публикации:: 16 декабря 1993 г.
Издание:: ISO IS 5347 edition 1 version 1
ICS:: 17.160

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Описание (английский):

Lays down detailed specifications for the instrumentation and procedure to be used for acoustic sensitivity testing. Applies to accelerometers. Is applicable for a frequency range of random noise from 125 Hz to 8000 Hz and a sound pressure level of 130 dB (reference value: 2 × 10^-5 Pa).

Технические детали

Технический комитет: ISO/TC 108 - Mechanical vibration, shock and condition monitoring
SKU: ISO 5347-15:1993

Abstract

Overview

ISO 5347-15:1993 specifies methods for testing the acoustic sensitivity of accelerometers as part of the ISO 5347 series on calibration of vibration and shock pick-ups. It lays down detailed instrumentation, environmental conditions and procedural steps to measure how an accelerometer responds when exposed to acoustic (air‑borne) sound fields. The procedure applies to random noise in the 125 Hz to 8 000 Hz band at a reference sound pressure level of 130 dB (reference: 2 × 10^-5 Pa).

Key topics and technical requirements

Scope: Applies specifically to accelerometers and acoustic‑sensitivity testing within the given frequency and level range.
Environmental control: Ambient temperature recommended at 23 °C ± 3 °C.
Test room: Minimum volume 75 m³ to approximate free‑field acoustic conditions.
Acoustic source and setup:
- Random‑noise generator with octave‑band filtering, amplifier and wide‑band loudspeaker.
- Speaker positioned mid‑room with no hard reflecting surface directly in front; 50–100 mm distance from speaker to accelerometer recommended for the deflector setup.
- Suggested audio equipment examples (from the standard): low‑pass filter, 30 W power amplifier, 50 W loudspeaker in a 1 m × 1 m baffle.
Reference sound pressure spectrum (per octave band):
- 125 Hz: 115 dB ± 6 dB
- 250 Hz to 2 000 Hz: 120 dB ± 5 dB
- 4 000 Hz: 115 dB ± 6 dB
- Overall target: 130 dB ± 5 dB (reference 2 × 10^-5 Pa)
Acoustic level measurement: Use an SPL meter with octave‑band filtering covering 80–140 dB and maximum uncertainty ±3 dB.
Mounting & measurement procedure:
- Suspend the accelerometer on rubber cords with suspension resonance

Overview

Key topics and technical requirements

Scope: Applies specifically to accelerometers and acoustic‑sensitivity testing within the given frequency and level range.
Environmental control: Ambient temperature recommended at 23 °C ± 3 °C.
Test room: Minimum volume 75 m³ to approximate free‑field acoustic conditions.
Acoustic source and setup:
- Random‑noise generator with octave‑band filtering, amplifier and wide‑band loudspeaker.
- Speaker positioned mid‑room with no hard reflecting surface directly in front; 50–100 mm distance from speaker to accelerometer recommended for the deflector setup.
- Suggested audio equipment examples (from the standard): low‑pass filter, 30 W power amplifier, 50 W loudspeaker in a 1 m × 1 m baffle.
Reference sound pressure spectrum (per octave band):
- 125 Hz: 115 dB ± 6 dB
- 250 Hz to 2 000 Hz: 120 dB ± 5 dB
- 4 000 Hz: 115 dB ± 6 dB
- Overall target: 130 dB ± 5 dB (reference 2 × 10^-5 Pa)
Acoustic level measurement: Use an SPL meter with octave‑band filtering covering 80–140 dB and maximum uncertainty ±3 dB.
Mounting & measurement procedure:
- Suspend the accelerometer on rubber cords with suspension resonance

ISO 5347-15:1993 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

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Abstract

Overview

Key topics and technical requirements

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