HS5633T Portable Sound Level Meter
| Origin | Jiangsu, China |
|---|---|
| Manufacturer Type | Distributor |
| Origin Category | Domestic |
| Model | HS5633T |
| Pricing | Upon Request |
Overview
The HS5633T Portable Sound Level Meter is a compact, hand-held acoustic measurement instrument engineered for precision and field reliability in occupational health, environmental noise assessment, and industrial machinery monitoring. It operates on the principle of electret condenser transduction combined with logarithmic true-RMS detection—ensuring high linearity, low distortion, and stable response across its full dynamic range. Designed to meet international metrological standards, the HS5633T conforms to IEC 61672-1:2013 Class 2 and GB/T 3785.2–2010 Type 2 specifications for sound level meters, making it suitable for routine compliance measurements where traceable accuracy and repeatability are required under non-laboratory conditions.
Key Features
- True RMS detector with crest factor ≥3, enabling accurate measurement of impulsive and non-sinusoidal noise sources including impact tools, compressors, and transportation noise.
- Dual frequency weighting networks: A-weighting (for human hearing sensitivity simulation) and C-weighting (for peak-level evaluation and low-frequency energy assessment).
- Fast (F) time weighting per IEC 61672, optimized for real-time monitoring of fluctuating sound pressure levels.
- Auto-ranging measurement from 35 dB to 130 dB re 20 µPa, eliminating manual scale selection and reducing operator error.
- Large backlit LCD display with simultaneous digital readout and analog bar-graph simulation—supporting rapid visual interpretation of instantaneous SPL.
- Integrated AC output (±1.5 V peak, 600 Ω impedance) for oscilloscope waveform analysis or external signal conditioning; RS-232C serial interface (9600 baud, 8N1) for remote data logging and synchronized multi-instrument networked acquisition.
- Lightweight ABS polymer housing (230 × 72 × 30 mm, 300 g with batteries), rated for operation between –10 °C and +50 °C—ideal for extended outdoor surveys and mobile industrial audits.
- Low-power design: powered by two AA alkaline cells (LR6), delivering up to 24 hours of continuous operation; optional 6 V DC external supply support.
Sample Compatibility & Compliance
The HS5633T is compatible with standard 1/2″ electret condenser microphones (e.g., Ø12.7 mm capsule), and supports calibration using Type 1 acoustic calibrators (e.g., 1 kHz, 94 dB or 114 dB reference tone) or pistonphone sources per IEC 60942. Its mechanical and electrical design complies with electromagnetic compatibility (EMC) requirements outlined in IEC 61326-1 for measurement equipment used in industrial environments. While not certified for regulatory enforcement-grade reporting (e.g., ISO 1996-2 or EU Environmental Noise Directive Annex II), it fulfills preliminary screening, internal audit, and engineering control verification tasks aligned with OSHA 1910.95, NIOSH RELs, and WHO community noise guidelines.
Software & Data Management
The RS-232C interface enables integration with third-party data acquisition platforms—including custom LabVIEW applications, Python-based serial loggers, or Excel-linked macros—supporting timestamped streaming of instantaneous LF values at 1 Hz resolution. No proprietary software is bundled; however, ASCII-formatted output is fully parseable and compatible with GLP-compliant audit trails when paired with validated host systems. For regulated environments requiring electronic record integrity, users may implement 21 CFR Part 11–compliant data capture solutions via middleware that enforces user authentication, audit logging, and electronic signatures.
Applications
- Workplace noise mapping and hearing conservation program support per ANSI S1.25 and ISO 9612.
- Environmental noise baseline studies near roads, railways, airports, and construction sites.
- Machinery noise diagnostics—including motors, HVAC systems, pumps, and gearboxes—during commissioning, maintenance, or retrofit validation.
- Educational laboratory instruction on acoustics fundamentals, frequency analysis, and decibel mathematics.
- Pre-compliance testing prior to formal certification using Class 1 instrumentation (e.g., before ISO 3744 or ISO 7779 measurements).
FAQ
What calibration standards does the HS5633T support?
It is designed for use with Type 1 sound calibrators (94 dB or 114 dB at 1 kHz) compliant with IEC 60942, and pistonphone calibrators meeting IEC 61094-4 requirements.
Can the HS5633T measure Leq or other integrated metrics?
No—the HS5633T provides only instantaneous LF readings with A- or C-weighting; it does not compute time-averaged, percentile, or statistical metrics such as Leq, L10, or L90.
Is the RS-232 output compatible with modern USB-to-serial adapters?
Yes—standard FTDI or CP2102-based adapters are functionally interoperable; ensure driver installation and correct COM port configuration in the host application.
Does the instrument include internal memory for data storage?
No—the HS5633T lacks onboard memory; all data must be captured externally via real-time serial streaming.
What is the recommended recalibration interval?
Annual calibration is advised for routine use; more frequent verification (e.g., pre- and post-measurement) is required when operating in harsh thermal or humid conditions or after physical shock.
