Sound Power Testing to ISO 3744 | PLACID Complete System Deployment

A machinery manufacturer required a complete sound power measurement system for CE marking compliance testing. The PLACID sound power system with 16-channel DAQ and hemisphere microphone array delivered ISO 3744 compliant results with stated measurement uncertainty on every test report.

• Application: CE marking sound power declaration for industrial machinery
• Standard: ISO 3744 engineering grade in a qualified free-field environment
• System: PLACID PQ1601 (16-ch DAQ) + hemisphere array + Class 1 microphone sets
• Outcome: Compliant test reports with stated expanded uncertainty U = 1.2 dB