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Castle GA116B Class 1 SONUS Digital Sound Pressure Level Meter

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  • Pocket-sized sound level meter with measurement from 35dB to 140dB
  • Capable of measuring any two of Lp, Lmax and Cpeak simultaneously
  • Choice between A and C weighting and between fast and slow response times
(Ex. VAT) £669.00 (Inc. VAT) £802.80

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  • Description

    Castle GA116B Class 1 SONUS Digital Sound Pressure Level Meter

    The Castle GA116B Class 1 SONUS Digital Sound Pressure Level Meter is a pocket-sized sound level meter that can measure sound pressure from 35dB to 140dB using three different measurement ranges. It has Class I accuracy - thus making it compliant with IEC 61672-1:2002 - and gives readings to a precision of 0.1dB.

    Simultaneous readings for sound pressure (Lp), maximum sound pressure (Lmax) and peak (Cpeak) allow the user to perform various duties including fire alarm testing and spot checking in accordance with the Noise at Work Regulations 1989. The user can toggle between A and C weighting and between fast and slow responses in addition to choosing between one of so the Castle GA116B is very versatile as an instrument.

    The Castle GA116B has a backlit digital display that shows all readings plus elapsed time, overload and battery level. The hard ABS casing can withstand the rigours of the majority of industrial environments and the battery lasts for roughly 12 hours. Intuitive push button operation makes the meter very easy to use.

    Castle part number: GA116B

    Key Features

    • Measurement ranges: 35dB to 100dB; 55dB to 120dB; 75dB to 140dB
    • Linear operating range: 65dB
    • Class I accuracy
    • A or C weighting
    • Fast/slow response choice
    • 0.1dB measurement resolution
    • Lp (sound level measurement), Lmax, and Cpeak
    • Time elapsed shown
    • Tough plastic casing
    • 12-hour battery life
    • Digital screen
  • Specification


    • IEC 61672-1:2002 (Integrating, Sound Exposure and Sound Level Meters)


    • Type 2 Pre-Polarised ½” (13.2 mm) Electret Free-Field, Electret Condenser Microphone: 20Hz – 8KHz ± 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


    • Back-lit LCD panel (8x1 Characters)
    • Alpha-Numeric display for measured results


    • Measuring Range: 35-140
    • Linear operating range (IEC61672-1): 65dB
    • 3 Measurement Ranges (IEC61672-1): 35-100; 55-120 - Reference Range; 75-140


    • Typical ’A’ Weighting <32 dB(A) rms.
    • ‘C’ Weighting <38 dB(C) rms.


    • ‘A’ and ’C’ to IEC 61672-1:2002 and IEC 60651:1979+A1+A2


    • 20 Hz - 8 kHz (including microphone)
    • 1 Hz - 20 kHz (electrical characteristics)


    • Slow and Fast


    • Simultaneous rms. and Peak


    • Lp (Sound Pressure Level), Lmax (maximum Level), Cpeak (Max. Peak Level)
    • Other Displays: Elapsed time, Overload, Battery Life


    • Software controlled 91.0 to 120.0 dB (1kHz) in 0.1 dB steps


    • A to D Converter: 12-bit
    • Controller: 8MHz, micro-controller


    • Batteries: 1 x 6LR61 (size PP3), Life: >12 hours (alkaline batteries, continuous operation).


    • Dimensions: 60mm (width) x 35mm (depth excluding pocket clip) x 135mm (height without microphone) or 210mm (height with microphone)
    • Weight: 220g (including battery)
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    We use DPD/Interlink for all larger items and Royal Mail for smaller items and accessories. With DPD/Interlink you will receive a 1 hour delivery window on the day of delivery via e-mail/text and a notification 15 minutes before arrival so you will not have to wait around all day. You can even manage your booking online and re-arrange delivery for another date or arrange the goods to be left with a neighbour of your choice.

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    • Saturday Pre-Noon Delivery (on select products only) at £14.50*
    • Sunday Pre-Noon Delivery (on select products only) at £14.50*

    *UK mainland only

    NOTE! For next working day or Saturday/Sunday delivery options the order MUST be placed no later than 3pm on the working day before delivery is required. After 3pm, please arrange with our staff before selecting a priority delivery service. Priority services are available to UK mainland residents only (this might exclude certain areas in the north of Scotland).

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