Advanced Occupational Noise Measurements
It is fitted with one-third octave band filters for detailed sound analysis. Precisely measure sound level and detect noise source with one-device.
Class 1 GPS Sound Analyzer
Best Practice of International Standards
Sound Analyzer
ST-15D meets the most up-to-date IEC and ANSI certifications.
These certifications represent the only and the highest globally standardized approach to testing, inspection, and conformity assessment.
Best Practice of International Standards Analyzer
ST-15D meets the most up-to-date IEC and ANSI certifications.
These certifications represent the only and the highest globally standardized approach to testing, inspection, and conformity assessment.
Real-Time
1/3 Octave Band
Analysis
Analyzing a sound source by frequency basis is really time-consuming, this is where one-third of octave bands make the difference.
ST15D applies 1/3 octave band analysis.
The 1/3 octave analysis is carried out using real-time band-pass filtering with decimation technique. This allows complex sound to be split into smaller sections or bands which then produce detailed filter shapes to accurately specify noise source.
Locate
Noise Source
with GPS
Measure sound level, detect sound frequency spectrum in real time, and locate the source of sound from one device.
The integrated GPS shows start and end-point of sound location details.
Smart Software
for Sound Data Management
Monitor real-time noise measurement data and export historical data for further analysis on your computer using Scarlet Sound software.
ScarletSound software is Windows PC-compatible. Install software on the computer and connect ST-15D to computer via USB cable.
Optional Add-On
Where does Scarlet Class 1 Sound Level Meter Apply
Specifications
| Model | ST-15D 1/3 OCT sound analyzer meter | ST-15D sound analyzer meter |
| Fulfils Standard | IEC 61260-1:2014 Class 1 | IEC 61260-1:2014 Class 1 |
| Dimensions | 260 x 80 x 30 mm | 260 x 80 x 30 mm |
| Display | 240×320 color screen, adjustable brightness, backlight can be closed | 240×320 color screen, adjustable brightness, backlight can be closed |
| Display Resolution | 0.1 dB | 0.1 dB |
| Frequency Range | 10 Hz ~ 20 kHz ± 1 dB (not including microphone) | 10 Hz ~ 20 kHz ± 1 dB (not including microphone) |
| Measurement range | 20dB-142dB (145dB Peak) | 20dB-142dB (145dB Peak) |
| Main Parameters of Measurement | LFp, LSp, LIp, Leq1, Lpeak, Leq,T, LFmax, LFmin, LSmax, LSmin, LImax, LImin, SEL,Ts, Tm, Volt, E. | LFp, LSp, LIp, Leq1, Lpeak, Leq,T, LFmax, LFmin, LSmax, LSmin, LImax, LImin, SEL,Ts, Tm, Volt, E. |
| Accuracy | ±0.7 dB | ±0.7 dB |
| Weight | 0.35 kg (include batteries) | 0.35 kg (include batteries) |
| Application | Noise integrating measurement | Noise integrating measurement |
| Power Supply | battery 4×AA or external power supply | battery 4×AA or external power supply |
| Environment | Working Temperature: -10 ~ 50°C Storing Temperature: -20 ~ 70°C Relative Humidity: 25 ~ 90 % | Working Temperature: -10 ~ 50°C Storing Temperature: -20 ~ 70°C |
| GPS | Longitude, latitude, wind velocity, distance, direction and time calibration | Longitude, latitude, wind velocity, distance, direction and time calibration |
| Statistical Analysis Function | Measure Index: Lxyp, Lxeq,0.5s, Lxeq,T, Lxymax, Lxymin, LxyeqT , SEL, Ln as minimum: 1, 5, 10, 50, 90 with 0.1 dB resolution, SD Note: x is A,C,Z y is F,S,I n is 1~99 24h measures index: Ld, Ln, Ldn. | Measure Index: Lxyp, Lxeq,0.5s, Lxeq,T, Lxymax, Lxymin, LxyeqT , SEL, Ln as minimum: 1, 5, 10, 50, 90 with 0.1 dB resolution, SD Note: x is A,C,Z y is F,S,I n is 1~99 24h measures index: Ld, Ln, Ldn. |
| Audio Recording | Optional Upgrade | Record sound data and save it into “WAVE” format |
| SD card | Optional | Included |
| Integrating Function | Optional Upgrade | Lxyi, Lxyp, Lxeq,t, Lxeq,T, Lxmax, Lxmin, Lxpeak LAE, LC-A, SEL Note: x is A,C,Z, y is F,S,I |
| 1/3 OCT | Measuring Parameters: Lxyp, Lxeq,0.5s, Lxeq,T, , Lxymax, Lxymin, Tm Note: x is A,C,Z,B,D, F0i y is F,S 1/3 octave band filter, G =103/10 | Optional Upgrade |
| 1/1 OCT | Optional Upgrade | Optional Upgrade |
| Dosimeter Function | LAsp,LASMAX,LASMIN,TWA,LEX 8h, LCpeak, LZpeak, LAeq,T, LAVG, DOSE (Optional Upgrade) | LAsp,LASMAX,LASMIN,TWA,LEX 8h, LCpeak, LZpeak, LAeq,T, LAVG, DOSE (Optional Upgrade) |
| FFT Analysis | Sampling Freq: 48 kHz, 24 kHz, 12 kHz, 6 kHz, 3 kHz Measuring Parameters: MAX, MIN, LeqT (Optional Upgrade) | Sampling Freq: 48 kHz, 24 kHz, 12 kHz, 6 kHz, 3 kHz Measuring Parameters: MAX, MIN, LeqT (Optional Upgrade) |
| Printer | Thermal or dot-matrix bluetooth printer (optional) | Thermal or dot-matrix bluetooth printer (optional) |
