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SoundTEK ST-120 Class 1 Sound Level Calibrator

SKU: SOUNST120
  • Projects sound at 94dB and 114dB for meter calibration
  • Meets IEC 60942 Class 1 standards for accuracy
  • Feedback system ensures constant, stable sound
More Info
Typically ships in 6-8 weeks

SoundTEK ST-120 Class 1 Sound Level Calibrator

The SoundTEK ST-120 Class 1 Sound Level Calibrator is a highly accurate sound meter calibrator which allows the user to calibrate his/her own instruments without the need of a third party. It fits 1/2" microphones including those of the SoundTEK ST-107S and ST-109. Calibration is obviously very important and users can have confidence in the ST-120 because it conforms to the IEC 60942 Class 1 accuracy standard and is therefore in the upper tier of the industry’s rating system.

With a feedback system to ensure a stable output, the ST-120 projects sound at 94dB to within ±0.3dB accuracy and at 114dB to within ±0.5dB accuracy. Decibels are a logarithmic scale where every 3dB represents a doubling in wave length amplitude so precise calibration is extremely important for accuracy in sound level meters.

The product is pre-calibrated and batteries are included so it is ready to use straight out of the box.

Key features

  • Calibrates 1/2" microphones
  • Feedback system ensures highly stable volume output
  • Accuracy meets IEC 60942 Class 1 requirements
  • Projects sound at 94dB and 114dB

SoundTEK Meter Comparison Chart

  ST-105 ST-106 ST-107S ST-109
IEC 61672-1-2002 Class 1 ✔ ✔   ✔
IEC 61672-1-2002 Class 2     ✔  
Datalogging ✔ ✔ ✔ ✔
128 Records Storage ✔      
37,000 Records Storage     ✔ ✔
24H Measurement ✔ ✔ ✔ ✔
1/1 Octave ✔      
1/3 Octave ✔      
Real time analysis ✔      
A/C/Z ✔ ✔ ✔ ✔
F/S/Impulse ✔ ✔    
24H Measurement ✔ ✔ ✔ ✔
Micro-SD Slot ✔ ✔    
Compatible with SoundTEK ST-120 Class 1 Sound Calibrator (optional extra) ✔ ✔ ✔ ✔

What's In The Box?

  • SoundTEK ST-120 Class 1 Sound Level Calibrator
  • SoundTEK ST-120 Class 1 Sound Level Calibrator instruction manual
  • SoundTEK carry case
  • Calibration certificate
  • 1 x 9V battery
Specification
  • Standard: IEC 60942 (2003) and ANSI S1.40 (1984) Class 1
  • Sound Pressure Levels: 94dB and 114dB (reference of 2x10-5Pa)
  • Accuracy: ±0.3dB at 94dB, ±0.5dB at 114dB
  • Frequency: 1000Hz ± 1%
  • Distortion: ≤3%
  • Battery: 9V 006P or |EC6F22 or NEDA 1604
  • Dimension: ⌀ 62 x 134 mm
  • Weight: about 350g (included 1/2” adaptor and 9V battery)
  • Stable Times: 20s
  • Operating Temperature: 0ºC ~ 40ºC (32ºF ~ 104ºF)
  • Storage Temperature: 0ºC ~ 60ºC (32ºF ~ 140ºF)
  • Humidity: < 90%
  • Atmospheric Pressure: 64KPa ~ 100KPa