Sound Power Measurement System PLACID

Overview

Complete turnkey system for sound power determination according to ISO 3744 and ISO 3745. Everything you need to qualify products, meet CE marking requirements, or certify machinery noise — in a single package.

Sound power is the fundamental quantity for comparing the noise emission of products independent of the acoustic environment. Whether you need to determine sound power for EU product noise labeling under Regulation 2019/2021, for CE marking declarations, or for engineering noise control purposes, the measurement must follow standardized procedures with calibrated instruments. PLACID hemisphere arrays and measurement microphones provide a complete, traceable sound power measurement system.

Measurement Challenges

• Accurate sound power determination requiring multiple measurement positions
• Compliance with ISO 3744 (engineering grade) or ISO 3745 (precision grade)
• Environmental correction for measurements outside anechoic conditions
• Product noise labeling requirements under EU ecodesign regulations
• Repeatability and reproducibility of declared sound power values

PLACID Solutions

• PLACID Hemisphere Array with pre-configured microphone positions per ISO 3744/3745
• PMP21 Class 1 measurement microphones with documented free-field response
• PQ801 multi-channel DAQ for simultaneous acquisition of all array positions
• Complete calibration documentation for each microphone in the array
• Measurement uncertainty calculation support per ISO 3744 Annex A

System Components

16-Channel DAQ: PQ1601

Hemisphere Microphone Array

Measurement microphone sets Placid PMP20-1

PQ Analyst Software