Noise Measurement Solutions

The Castle dBAir Series represents the new benchmark in occupational and environmental noise measurement, combining precision instrumentation with wireless cloud connectivity. Designed for Noise at Work assessments, environmental compliance, construction noise monitoring, and consultancy applications, dBAir sound level meters are available in Class 1 and Class 2 configurations with options for 1/1 and 1/3 octave band analysis. The system’s seamless integration with TheCastleCloud.com allows instant data transfer, storage, and reporting – enabling users to manage results anywhere, on any device, without complex software. With handheld portability and long-term outdoor monitoring kits, the dBAir family delivers a complete solution for both short-term and unattended noise assessments.

Key Features:

Wireless data transfer via Castle Cloud – no software required
Compliant with IEC 61672-1:2013 Class 1 & 2 standards
Simultaneous dual measurements with independent time/frequency weightings
Wide frequency range: 1 Hz – 20 kHz
Measurement Parameters:

Safety: LEQ, LMAX, LMIN, Peak, Dose, LEP’d, Exposure Points, Hearing Protector Calculator
Environmental: LEQ, Lday, Lnight, Ldn, Lden, NA, Ln (L1–L99) + BS 4142 assessments

Octave Band Analysis (1/1 and 1/3 octave available) for tonal noise assessments & PPE selection
Audio recording capability
Rugged, weatherproof outdoor systems with optional 40-day power supply
Multi-language support (English, French, German, Spanish, Chinese, Russian, etc.)
Cloud features: secure backup, instant CSV downloads, customized reporting

Available Models:

dBAir Safety (Class 1 / Class 2)
dBAir Environment (Class 1 with environmental parameters)
dBAir Safety & Environment (multi-purpose, Class 1 with 1/1 and 1/3 octave options)
Handheld Systems for short-term assessments
Outdoor Systems with weatherproof casing, tripod, and extended battery

Parameter	Details
Microphone	Class 1: ½” Pre-Polarised, Free Field, Sensitivity -26 dB (±2 dB re 1V/Pa) Class 2: ½” Pre-Polarised, Free Field, Sensitivity -32 dB (±2 dB re 1V/Pa)
Measurement Range	Linear Operating Range: 95 dB Noise Floor: <18 dB(A) rms (A-weighting)
Frequency Range	Electrical: 1 Hz – 20 kHz Class 1: 12.5 Hz – 20 kHz Class 2: 16 Hz – 16 kHz
Weightings	Frequency: A, C, Z Time: Slow, Fast, Impulse
Display	2.4” full-colour TFT, 240×320 pixels
Data Logging & Memory	Time history: 10 ms to 24 h (short/long intervals) Smart Timer, Duration Timer, Interval Timer Memory: 16 GB, 32 GB, or 64 GB
Connectivity	Wireless data transfer via Castle Cloud Micro USB Type-B for PC connection
Power	4 × AA batteries (up to 8 h operation) USB external power option
Dimensions & Weight	210 × 70 × 30 mm (incl. pre-amplifier) 305 g (meter only); up to 1.5 kg (system with accessories)