SOUND LEVEL METER – Model: SL-4012 噪音計

Technical Specifications:

– Display: 

  – Type: LCD (Liquid Crystal Display)

  – Size: 52 mm x 32 mm, 5 digits

– Measurement Functions:

  – Sound Level (dB):

    – Range: 30 to 130 dB

    – Resolution: 0.1 dB

    – Accuracy: Frequency weighting meets IEC 61672 Class 2 standards

  – Frequency Weighting:

    – A weighting: Simulates human ear response

    – C weighting: Near flat response

  – Time Weighting:

    – Fast (t = 200 ms): Simulates human ear response time weighting

    – Slow (t = 500 ms): Provides average values of vibration sound level

– Output Signal:

  – AC Output: AC 0.5 Vrms corresponding to each range step

  – RS232 Output: For computer interface

  – Output Terminal: 3.5 mm dia. phone socket

– Calibration:

  – Calibration VR: Built-in external calibration VR for easy calibration at 94 dB level