TSI SoundPro™ SE/DL Series Sound Level Meter

Overview

The TSI SoundPro™ SE/DL Series Sound Level Meter is a precision-engineered Class 1 and Class 2 compliant instrument designed for occupational health, environmental noise monitoring, regulatory enforcement, and acoustic research applications. It operates on the fundamental principle of condenser microphone-based sound pressure measurement, converting acoustic pressure fluctuations into proportional electrical signals via pre-polarized electret or externally polarized microphones. The system adheres strictly to the electroacoustic performance requirements defined in IEC 61672-1:2013 (Sound Level Meters), ANSI S1.4-2014 (Type 1/2), and IEC 61260-1:2014 (Octave-Band Filters), ensuring metrological traceability and international comparability of measurements. Its dual-channel architecture supports simultaneous A-, C-, and Z-frequency weighting with selectable time weightings (Fast, Slow, Impulse), enabling comprehensive assessment of both steady-state and impulsive noise sources across industrial, urban, and indoor environments.

Key Features

• Dual virtual sound level meter functionality—enables concurrent measurement of two independent metrics (e.g., LAeq and LCpeak) on a single device
• Real-time 1/1-octave (11 bands, 16 Hz–16 kHz) and 1/3-octave (33 bands, 12.5 Hz–20 kHz) spectral analysis, compliant with IEC 61260-1:2014
• Full suite of frequency weightings: A, C, Z (flat), and F (free-field correction option)
• Time-weighting options: Fast (125 ms), Slow (1 s), and IEC-defined Impulse (35 ms rise, 1.5 s decay)
• Configurable exchange rates: 3 dB, 4 dB, 5 dB, and 6 dB for noise dose calculation
• L_EQ, L_MAX, L_MIN, L_PEAK, SEL, L_N (L₁–L₉₉), TWA, Dose, PDose, LDN, CNEL, and exposure metrics (Pa²·h/Pa²·s)
• Backlit 128 × 64 LCD display with analog bar graph and digital SPL readout; multilingual UI (English, French, Spanish, German, Italian, Portuguese)
• Integrated SD card slot (32 MB–32 GB) supporting programmable logging intervals from 1 second to 60 minutes
• USB 2.0 (mini-B) and RS-232 interfaces for data transfer and remote control; 3.5 mm audio output for real-time monitoring
• Robust ABS housing with stainless-steel fiber shielding for EMI/RFI immunity; IP54-rated ingress protection (with optional outdoor enclosure)

Sample Compatibility & Compliance

The SoundPro™ SE/DL series accommodates interchangeable microphones ranging from ¼″ to 1″ diameter—including TSI’s Class 1 BK4936 and Class 2 QE7052 pre-polarized units—with selectable polarization voltage (0 V or 200 V) and sensitivity calibration referenced to 1 V/Pa. All configurations maintain compliance with IEC 61672-1:2013 (Class 1 or Class 2), ANSI S1.4-2014, ANSI S1.43-2007 (for noise dose), and IEC 60268-16:2013 (STI-PA speech intelligibility). Electromagnetic compatibility meets EN/IEC 61326-1:2013 (Group 1, Class B) and FCC Part 15 Subpart B. Safety certification includes IEC 61010-1:2010, CE marking, RoHS, and WEEE directives. For long-term unattended deployment, the optional SP-OMS Outdoor Monitoring System provides weatherproofing, anti-vandalism protection, and extended battery operation (up to 7 days standard, 14 days with dual-battery configuration).

Software & Data Management

Data acquisition, configuration, and reporting are managed through TSI’s DMS (Detection Management Software), a validated platform supporting GLP/GMP-aligned workflows. DMS enables secure instrument setup, firmware updates, and preset library management; retrieval and synchronization of logged datasets from SD cards; generation of annotated time-history plots, octave-band spectra, and regulatory-compliant reports (e.g., OSHA 29 CFR 1910.95, EU Directive 2003/10/EC). Export formats include CSV, XML, and Excel-compatible spreadsheets. Audit trail functionality records user actions, parameter changes, and calibration events—supporting FDA 21 CFR Part 11 compliance when deployed with electronic signature modules. All stored data retain full metadata: timestamp, GPS coordinates (when paired with compatible GNSS receiver), microphone serial number, calibration history, and operator ID.

Applications

• Occupational noise exposure assessment per ISO 9612, OSHA PEL/Action Levels, and EU Physical Agents (Noise) Directive
• Environmental noise mapping and statutory compliance monitoring (e.g., WHO guidelines, national noise ordinances)
• Industrial machinery qualification, HVAC system evaluation, and building acoustics (RT60, NC/NR curves)
• Transportation noise studies (road, rail, aircraft) and community impact assessments
• Public address and emergency alarm system verification using STI-PA methodology (IEC 60268-16)
• Legal metrology and court-admissible noise evidence collection with full traceable calibration logs
• Research-grade spectral analysis for psychoacoustic modeling and noise source identification

FAQ

What standards does the SoundPro™ SE/DL comply with?
It conforms to IEC 61672-1:2013 (Class 1/2), ANSI S1.4-2014, IEC 61260-1:2014, ANSI S1.43-2007, IEC 60268-16:2013, and EN/IEC 61326-1:2013.
Can it measure peak sound pressure levels above 140 dB?
Yes—when equipped with high-range microphones (e.g., BK4936 with optional preamplifier), peak SPL up to 143 dB is achievable.
Is GPS integration supported?
Yes, via external GNSS receivers connected through the 10-pin auxiliary port; geotagged measurements are embedded in DMS reports.
How is data security enforced?
Four-digit password protection governs both operational access and configuration changes; DMS supports role-based permissions and encrypted data export.
What is the operating temperature range?
–10 °C to +50 °C (operational), with <±0.5 dB thermal drift; storage range extends to –25 °C to +70 °C.
Does it support third-party calibration services?
Yes—calibration certificates issued by ISO/IEC 17025-accredited laboratories are fully recognized and importable into DMS for audit-ready traceability.