Views: 1 Author: Site Editor Publish Time: 2026-08-27 Origin: Site
Key Technical Specifications
Product Name: Class 1 Sound Level Meter
Standard Compliance: Class 1 IEC 61672-1:2013 standard
Measurement Range: 25 dB to 140 dB wide range
Measurement Parameters: Integral and statistical calculations including Leq (A/C/Z frequency), Lpeak, Lmax, and Ln
Frequency Analysis: Spectrum analyzer with optional 1/1 & 1/3 octave band filters
Data Storage: Data logging and audio recording in MP3/WAV format with a 64 GB SD card
Frequently Asked Questions (FAQ)
Q1: Why is Class 1 precision necessary for tower cranes and hoists?
A: Construction sites require high accuracy to track noise limits. The ST-12D meets the Class 1 IEC 61672-1:2013 standard, offering a wide 25–140 dB measurement range for harsh job sites.
Q2: How does the ST-12D protect crane operators' health?
A: It features built-in dosimeter and integral functions to track noise exposure. This helps prevent operator fatigue, hearing loss, and miscommunication caused by high cabin noise.
Q3: Can the ST-12D help diagnose machinery faults early?
A: Yes. With optional 1/1 and 1/3 octave band filters, operators can conduct real-time frequency analysis to detect abnormal noise from gearboxes, reducers, or slewing mechanisms before failure occurs.
Q4: How does the device handle long-term noise logging and reporting?
A: The ST-12D logs measurement data and records MP3/WAV audio on a 64 GB SD card. Paired with PC software, it generates environmental compliance reports effortlessly.
