汽车零部件风扇噪音测试,张家港公司委托检测,实测数据图分享!

Test projectnoiseTest EquipmentMulti-Channel Analysis System: Heim DIC6BMicropho

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Test project

noise

Test Equipment

Multi-Channel Analysis System: Heim DIC6B

Microphone: GRAS 46AE

Sound Level Calibrator: B&K 4231

DC Power Supply: GW PSH-3630A

Tape Measure

Thermo-Hygrometer: Foxconn KPC-101A

Test Conditions

1、Reference Document: ISO3744:2010 (E) B.1 table B.2

2、Frequency Range: 20Hz~16000 Hz

3、Frequency Weighting: A Weighting

4、Ambient Condition: 22.0°C~22.2°C.,50.0%RH~57.0%RH

5、Test Setup: (The Z-axis numerical height is the difference between the microphoneheight and the height of the sample center)

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Test Procedure

1、Use Sound Level Calibrator to Calibrate the Microphones

2、Sound Pressure Level (SPL) Measurements for EUT

    2.1、Set up EUT and Microphones Based on Customer Self Definition

    2.2、Measure Background Noise

    2.3、Measure the power spectrum density of the test Samples at Rated Voltage(13.5V)from Low to High Speed

    2.4、Make the fan work at different fixed speeds and measure the sound

Test Results

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