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Castle GA116I SONUS Class 1 Integrating Sound Level Meter

Castle Group
SKU: CASTGA116I
  • Sound meter and dosemeter measuring average, peak and personal exposure
  • Class 1 level accuracy between 35dB and 140dB with 65dB linear range
  • Performs risk assessments in accordance with Noise at Work Regulations 1989
More Info
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Castle GA116I SONUS Class 1 Integrating Sound Level Meter

The Castle GA116I SONUS Class 1 Integrating Sound Level Meter is a compact, portable combination of a sound level meter and a personal dosemeter. It measures sound levels between 35dB and 140dB over three different measurement ranges with a maximum linear range of 65dB. The 7146A microphone provides Class I level accuracy and measurement resolution of 0.1dB. Leq (rms average), LEpd (personal exposure) and peak measurement allow the user to comply with the Noise at Work Regulations 1989 when performing risk assessments.

The user can select either A or C frequency weighting and the Castle GA116I detects sound between 20Hz and 20kHz. There is also the choice between fast and slow response time and multiple other measurement options can provide the operator with a comprehensive picture of the audible environment. The meter complies with standards including IEC 61672-1:2002 Class 1, IEC 60651: 1979 Type 1, IEC 60804: 2001 Type 1 and IEC61252: 1993.

Readings (in dB or Pa2h) are shown on the Castle GA116I’s clear digital screen alongside other values such as time elapsed, overload and under range indication and battery life (>12 hours). The meter is operated via simple push buttons and intuitive menus and is encased in hardwearing plastic in order to withstand the challenges of industrial environments.

Castle part number: GA116I

Key Features

  • Maximum measurement: 140dB
  • Minimum measurement: 35dB
  • Linearity range: 65dB
  • Measurement ranges: 35dB to 100dB, 55dB to 120dB, 75dB to 140dB
  • Leq (average), LEpd (personal exposure), peak
  • Class I level accuracy
  • Measurement resolution: 0.1dB
  • Frequency range: 20Hz to 20kHz
  • A and C weighting 
  • Slow and fast response time
  • 12-hour battery life
Specification
  • Applicable Standards: IEC 61672-1:2013 (Integrating, Sound Exposure and Sound Level Meters); IEC 60651:2001 (Sound Level Meters); IEC 60804:2000 (Integrating Function)
  • Microphone and Preamplifier: Type 7146A Pre-Polarised ½” (13.2 mm) Free-Field, Electret Condenser Microphone: 20Hz – 20KHz ± 2dB –32 dB ± 3 dB re 1V/Pa Custom pre-amplifier design. Typical actuator to free-field correction factor (based on 500Hz=0) is shown below.
  • Display: Back-lit LCD panel (8x1 Characters) Alpha-Numeric display for measured results
  • Measuring Range: 35dB-140dB 
  • Linear operating range (IEC61672-1): 65dB 3
  • Measurement Ranges (IEC61672-1): 35dB-100dB; 55dB-120dB; (Reference Range) 75dB-140dB
  • Noise Floor: Typical ’A’ Weighting <32 dB(A) rms; ’C’ Weighting <38 dB(C) rms
  • Frequency Weighting: ‘A’ and ’C’ to IEC 61672-1:2002 and IEC 60651:2001
  • Frequency Range: 12.5 Hz - 20 kHz (including microphone); 1 Hz - 20 kHz (electrical characteristics)
  • Time Weighting: Slow and Fast
  • Instrument Response: Simultaneous rms. and Peak
  • Measurement Response: Lp (Sound Pressure Level), Leq (Equivalent Sound Level), Lmax (maximum Level), Cpeak (Max. Peak Level), LEpd (Sound Exposure Level), LAE (Single Event Sound Exposure Level) 
  • Other Displays: Elapsed time, Overload, Battery Life
  • Calibration: Software controlled 91.0 to 120.0 dB (1kHz) in 0.1 dB steps
  • Processing: A to D Converter, 12-bit Controller, 8MHz, micro-controller
  • Output: AC Output = 16.4mVrms at 94dB (un-weighted and not affected by range) DC Output = 40mV/dB (weighted and ranged)
  • Power Requirement: Batteries: 1 x 6LR61 (size PP3), Life: >12 hours (alkaline batteries, continuous operation)
  • Size: 60mm (width) x 30mm (depth excluding pocket clip) x 135mm (height without microphone) or 210mm (height with microphone)
  • Weight: 200g (without battery)