Scarlet Tech Ltd.

- Model ST-109 - Class 1 Sound Level Meter

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ST-109 Class 1 Sound Level Meter is designed to meet the requirements of IEC 61672-1:2002 (or the equivalent BS EN 61672-1:2003). ST-109 Sound Level Meters not only suitable for environmental noise measurements but can also be used for occupational noise measurements such as the UK Controls of Noise at Work Regulations or the OSHA Occupational Noise standards.

  • Wide frequency range 10 Hz…20 kHz
  • Wide measurement range 30 dB…130 dB
  • Wide dynamic range 100 dB
  • 4G SD card support
  • Parallel A/C/Z & Fast/Slow/Impulse measurement

  • Evaluation of environmental noise
  • Measurements of noise at workplaces
  • Design of cost-effective noise control plans
  • Assessment of product noise

Item: Description

  • USB interface: Yes
  • Micro SD card: Up to 32G
  • Bargraph display: Yes
  • Display: 3 1/2 digit backlit LCD display, maximum reading of 2000
  • Display refresh rate: 1 time/ per second
  • Applicable specifications: IEC 61672-1 : 2002 Class1, ANSI S1.4 Type 1, CNS NO.7129 Type 1, JJG-188-2002 Class1
  • Microphone: 1/2' pre-polarized condenser microphone build in preamplifier: -26 +/- 2dB (50mV/Pa), Fequency range: 10 Hz~20 kHz, heat noise :
  • Measurement items: SPL, Leq, SEL,Max, Min
  • Measurement range: 30dB ~ 130dB (A), 35dB ~ 130dB (C), 40dB ~ 130dB (Z)
  • Dynamic Range: 100 dB
  • Integrate Time Setup: randomly,10s, 1m, 5m, 10m, 30m, 1h, 2h, 4h, 8h, 16h, 24h or set in a given range
  • Max. peak C sound level: measurement 70~133 dB
  • Time weighting: Fast, Slow, Impulse, Peak
  • Frequency weighting: A/C/Z
  • Frequency Range: 10Hz~20KHz
  • DC output: 2Vdc/130dB
  • AC output: 2Vrms/130dB
  • Battery Life: 30 hours
  • Battery: LR6 1.5V*4 Alkaline batteries
  • Dimensions: 285(L) x 90(W) x 39(H) mm
  • Weight: 550g (including Batteries); 2.5Kg (including package)

  • IEC 61672-1 : 2002 Class1
  • ANSI S1.4 Type 1
  • CNS NO.7129 Type 1
  • JJG-188-2002 Class1

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