The Amprobe SM-20-A Sound 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 offers a PC interface.

They use two different weighting filters required by the 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 (ie 94dB 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 30~130dB, C weighting 35~130dB
• Frequency range: 31.5Hz~8KHz
• Display with 0.1dB steps on a 4 digit LCD
• Slow (1 sec) and fast (125ms) response settings to check peak and average noise levels
• 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
  

  Features SM-10 SM-20A Microphone 1/2 Electret condenser microphone Standard applied IEC 651 Type 2, ANSI 1.4 Type 2 Dynamic range 50 dB Time weighting Fast (125 mS), Slow (1 sec) Frequency range 31.5 Hz → 8 kHz Measuring level range (Auto Range) A-Weighting: 30 dB → 130 dB C-Weighting: 35 dB → 130 dB Data Data hold Min/max Internal memory - 14,000 records   Specifications Display: 4 digits LCD Microphone: 1/2 inch Electret condenser microphone Power supply: 9V NEDA 1604, IEC 6F22, JIS 006P battery Auto power off: Approx. 5 min Environment: Indoor operation, < 2000 m Standard applied: IEC 651 Type 2, ANSI 1.4 Type 2 Dynamic range: 50 dB Resolution: 0.1 dB, display update: 0.5 sec. Time weighting: FAST(125mS), SLOW(1 sec) Accessories: Carrying case, windscreen, User manual and 9V battery   For complete specs please download the product datasheet under the “Resources" tab. Model Name Description SM-20-A 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 Internal memory, 14,000 records Included Accessories: Carrying case, users manual, battery(installed),USB cable download and software CD