Amprobe Instruments SM-20A Sound Level Meter - 30-130 dB Range w/Memory


The Amprobe Instruments SM-20-A sound level meter has been designed to check compliance with safety regulations and perform acoustic analysis by safety engineers, health, industrial and safety offices as well as quality control. The SM-20-A also offers a PC interface.

The SM-20-A uses two different weighting filters required by IEC651 and ANSI S1.4 Type 2 for audio filtering. The A weighting is for general noise sound level and the C weighting is for measuring sound level of acoustic material control in various environments (for example: 94 dB 1 kHz etc.)


  • Designed to meet the measurement requirements of safety engineers, health, industrial safety offices and quality control in various environments
  • A and C weightings for checking compliance with safety regulations as well as acoustic analysis
  • Measuring ranges: A weighting 30 ~130 dB, C weighting 35~130 dB
  • Frequency range: 31.5 Hz~8 KHz
  • Display with 0.1 dB steps on a 4-digit LCD
  • Slow (1 sec) and fast (125ms) response settings to check peak and average noise levels Max/min recording
  • Max/Min Recording
  • Internal Memory: 14,000 Records
  • Recording intervals from 1 second to 8 hours
  • PC computer download capabilities
  • Data hold to freeze reading on digital display
  • CE, designed to meet IEC651 type 2, ANSI S1.4 type 2
More Information
Manufacturer Amprobe Instruments
Range 30-130 dB
Type Sound Level Meters
Additional Skus SM20A, SM20-A, SM-20-A
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