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Details
Specification

• Wide frequency range: 10Hz~20KHz.
• Wide measurement range: 20dB~142dB
• A / C / Z / B frequency weighting
• Working Temperature: -10 ~ 50°C
• Remote control through connected PC
• GPS function
• Data logging function
• Audio recording (optional)
• 1/3 OCT analyze (optional)

ST-15D - Advanced Occupational Noise Measurements

Scarlet ST-15D integrates professional class-1 sound level monitoring with a GPS analyzer that meets IEC and ANSI international standards. It is fitted with one-third octave band filters for detailed sound analysis. Precisely measure sound level and detect noise source with one-device.

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.

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.

Additional Features

• Audio Recording - Record Sound Data and Save it into “WAVE” format
• Instant Data Printout - Directly print data reports with portable high speed printer
• Class 1 Calibration - Calibrate device accurately on your own using ST-120 calibrator

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)