ST-130 Noise Dosimeter

Noise Exposure Measurement Compliant with OSHA & IEC Standards

Overview

Scarlet ST-130 noise dosimeter is the ideal tool for conducting occupational and industrial hygiene noise measurements for employees. ST-130 is designed to meet OSHA, IEC, and ISO standards. Its compact, lightweight, and cable-free design allows it to be comfortably worn on the shoulder, ensuring minimal inconvenience during use.
ST-130 Noise Dosimeter
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ST-130 Display

Screen

Clear LCD display shows key parameters such as sound pressure levels (SPL) and noise dose percentages, with numerical values displayed up to 999,999.

Microphone

Microphone

1/2-inch microphone offering precise sound measurements across a wide frequency range of 20 Hz to 8 kHz.

USB Port

USB Port

USB mini-B type port for connecting the device to PC software, enabling device control and data logging.

ST-130 Key Features

Overview
Noise Measurement
ST-130 noise dosimeter for professional noise exposure measurement

ST-130 measures noise level with A, C, and Z frequency weightings, and F, S, and I time weightings.

Wearable Device
For All-Day Noise Monitoring
Worker wearing ST-130 personal noise dosimeter

ST-130 offers a lightweight, easy-to-wear design ideal for personal noise exposure tracking over an 8-hour shift.

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Ensure that the daily noise exposure of workers is within safe levels with the ST-130.
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PC-Software

PC software is included in the package. With the software, you can control the dosimeter in real-time, capture dose reports, create plots, and download data in CSV format.

PC-Software

Which one I should choose?

Sound Level Meter or Noise Dosimeter?

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Which one I should choose?

Frequently Asked Questions

Find quick answers below, or visit our FAQ page for more.

What noise standards are supported by the ST-130?

OSHA, MSHA, DOD, ACGIH, ISO85, ISO90, and user-defined standards.
ST-130 noise dosimeter

How do I start measuring noise dose with the ST-130?

Turn on the device in NDM mode, press START to begin, and STOP to finish.
Manufacturing

What are the supported weighting filters in ST-130?

A, C, Z frequency and Fast, Slow, Impulse time weightings.
St-130 microphone
Good value.
— Rachel Kim
Data logging works well.
— James Ortiz
I’ve been using the ST-130 for 2 years and I’m very satisfied with its performance.
— Noise Assessment Technician

Specifications

  • Performance
  • Device
  • Features
  • Package List
  • FAQ
  • Download
ST-130 Noise Dosimeter
Item Description
Measurement items (Noise dosimeter) Dose%, Lxyp, Lxmax, Lxmin, Lxeq, SEL (LAE), PeakMAX, LAVG, TWA, LEP, LN%
Measurement items (Sound level meter) Lxyp, Lxmax, Lxmin, Lxeq, SEL (LAE), PeakMAX
Display range 30 to 90 dB (L); 50 to 110 dB (M); 70 to 140 dB (H)
Primary RMS range @ 1 kHz 41 to 86 dB (L), 55 to 106 dB (M), 75 to 125 dB (H)
Max Cpeak measurement 90 to 143 dB / 60 dB
Accuracy ±1.4 dB @ 94 dB / 1 kHz
Time weighting Fast / Slow / Impulse
Frequency weighting A / C / Z
Frequency range 20 Hz to 8 kHz
Item Description
Microphone 1/2” pre-polarized condenser microphone; Built-in preamplifier: 1V/Pa@250Hz; Frequency range: 20 Hz to 12.5 kHz; Thermal noise: < 25 dB(A)
Display Single LCD, MAX reading 999999
Display refresh rate 1 Hz
Internal memory Data logger: 10,000 NDM surveys; 1,000,000 SLM readings
Starting time Less than 10 sec
Battery life 24 hours (9V Alkaline battery x1)
Dimensions 107 (L) x 65 (W) x 33 (H) mm
Features
▪ Evaluation of environmental noise and logging
▪ Measurements of occupational noise at workplaces
▪ Compliance with noise at Work Regulations and occupational noise exposure guidelines
▪ Monitoring and recording of long term noise exposure
▪ Noise exposure measurements in hazardous environments such as oil fields, petrochemical plants and underground mines
▪ Measurement of noise exposure in the entertainment and music industries
Package List
▪ Noise dosimeter
▪ USB-C cable
▪ Microphone cable
▪ User guide
  • The ST-130 supports A, C, and Z frequency weightings, and Fast, Slow, or Impulse time weightings for accurate noise measurement.

  • Yes, sampling intervals can be set from 1 second to nearly 24 hours in the ‘Sampling Rate & Auto Record’ setup menu.

  • The screen will show ‘FULL.’ Connect to a PC, download the data, then erase it using the software to free up space.

  • The ST-130 supports OSHA, MSHA, DOD, ACGIH, ISO85, ISO90, and user-defined standards for compliance with occupational safety regulations.

  • Turn on the device and make sure it’s in NDM (Noise Dose Meter) mode. Press the START/PAUSE button to begin measurement. Press STOP when you’re done.

  • It can log up to 1,000,000 readings in SLM mode, and all readings can be saved, reviewed, and downloaded for analysis.

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Datasheet
User Guide

ST-12D Class 1 Sound Analyzer

ST-12D is professional Class 1 sound level meter with measurement range from 25 to 140 dB. It delivers comprehensive noise measurements, including Leq, Lpeak, Lmax, Ln, L10, DOSE, and more. For in-depth frequency analysis, the ST-12D also offers optional 1/1 and 1/3 octave band measurements, making it the perfect tool for detailed acoustic monitoring.

Learn More
ST-12D Class 1 Sound Analyzer

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