SoundTEK ST-109 Class 1 Sound Level Meter

  • Impressive frequency and decibel ranges
  • Stores up to 37,000 readings with automatic transfer to 32G micro-SD
  • Conforms to IEC 61672-1 and ANSI S1.4 Class 1 accuracy standard
More Info
inc VAT £1,014.00 ex VAT £845.00
In Stock - Available Next Day

Product Details

SoundTEK ST-109 Class 1 Sound Level Meter

With an impressive dynamic measurement range of 100dB (30dB ~ 130dB), the SoundTEK ST-109 Class 1 Sound Level Meter stands out as a market-leading product because of its high level of accuracy which meets the Class 1 accuracy standard for IEC 6167 and ANSI S1.4. Furthermore, the user benefits from such accuracy over an expansive frequency range of 10Hz to 20KHz.

On a practical level, the ST-109 can be used for evaluating ambient noise levels, assessing product noise and measuring noise levels in the workplace therefore giving employers the information they need to meet government regulations that deal with noise at work. To that end, the product has a USB interface and a clear, digital, LCD display which can express information in bar-graph form.

Additionally, the ST-109 has A/C/Z frequency weighting, therefore making it easier to locate and identify the source of any noise pollution. It stores up to 37,000 readings and automatically transfers results to a removable 32G micro-SD card for further collation so it is practical to use on site without worrying about storage capacity.

The SoundTEK ST-109 Class 1 Sound Meter is an extremely accurate, practical sound meter. Its small size, datalogging and 30 hour battery life allow it be used extensively across large sites whilst its high dynamic range in both decibels and frequency make it suitable for single measurements or extended assessment in environmentts from building sites to offices.

Key Features

  • Class 1 accuracy for IEC 671672, ASNI S1.4, CNS 7129 and JJG-188-2002
  • Large frequency range (10Hz - 20KHz)
  • 100dB dynamic measurement range (30dB ~ 130dB)
  • A/C/Z frequency weighting for noise source location
  • Fast, Slow, Impulse, Peak time weighting
  • DC & AC output
  • LCD Digital display with bargraph
  • USB interface
  • Stores 37,000 with auto-transfer to 32G micro-SD

SoundTEK Meter Comparison Chart

  ST-105 ST-106 ST-107S ST-109
IEC 61672-1-2002 Class 1  
IEC 61672-1-2002 Class 2      
128 Records Storage      
37,000 Records Storage    
24H Measurement
1/1 Octave      
1/3 Octave      
Real time analysis      
24H Measurement
Micro-SD Slot    
Compatible with SoundTEK ST-120 Class 1 Sound Calibrator (optional extra)
What's In The Box?
  • SoundTEK ST-109 Class 1 Sound Level Meter
  • Instruction manual for SoundTEK ST-109 Class 1 Sound Level Meter
  • SoundTEK case
  • 4 x AA LR6 1.5V batteries
  • Wind muffler
  • Carry strap
  • Calibration certificate
More Information
  • USB Interface: Yes
  • Micro-SD card: 32G
  • Bargraph display: Yes
  • Display: 3.5 digit backlit LCD, max reading 2000
  • Display refresh rate: 1 time per second
  • Accuracy ratings: IEC 61672 : 2002 Class 1 ANSI S1.4 Type 1 CNS NI.7129 Type 1 JJG-188-2002 Class 1
  • Microphone: 1/2” pre-polarised condenser microphone build in preamplifier, -26 ± 2dB (50mV/Pa), Frequency range: 10Hz ~ 20 KHz
  • Measurement items: SPL, Leq, SEL, Max, Min
  • Measurement range: 30dB ~ 130dB (A), 35dB ~ 130dB (C), 40dB ~ 130dB (Z)
  • Dynamic range: 100dB
  • 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 ~ 133dB
  • Time weighting: Fast, Slow, Impulse, Peak
  • Frequency range: 10Hz ~ 20KHz
  • DC output: 2Vdc/130dB
  • AC output: 2Vrms/130dB