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Castle Personal Noise Dosemeter Kit

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  • Allows employees to measure their personal exposure to noise
  • Simultaneous measurement of personal exposure and peak noise
  • Calibrator ensures ongoing accuracy of dosemeter
(Ex. VAT) £855.00 (Inc. VAT) £1,026.00

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  • Description

    Castle Personal Noise Dosemeter Kit

    The Castle Personal Noise Dosemeter Kit contains a Castle GA257B Industrial Dosemeter, a Class 2 sound level calibrator and a carry case. Its main purpose is to allow employees to measure their personal noise exposure dose throughout the day in order to safeguard themselves from noise-related ill health. Two different versions of the kit - containing either one or five dosemeters - are available, thus allowing noise exposure measurement for a single or multiple employees.

    The Castle GA257B Industrial Dosemeter can measure sound between 75dB and 140dB at frequencies between 20Hz and 8kHz, thus covering the sound range most damaging to human hearing. Simultaneous measurement of personal sound exposure (LEpd) and peak noise (Zpeak) give the two most important aspects of noise when it comes to safety and the meter can even offer a projected LEpd figure for an eight-hour period. Readings are given in % dose, dose per hour, dB or Pa2h on the one-line display.

    A Castle GA601 Class 2 Sound Level Calibrator produces a single 94dB tone at 1kHz which enables the user to assess the accuracy of the dosemeter. The half-inch microphone cavity allows the tone to be accurately transferred to the microphone without any outside interference.

    Everything in the Castle Personal Dosemeter Kit is supplied in a handy attaché case which varies in size depending on whether the user selects the kit with a single dosemeter or multiple dosemeters.

    Castle part number: NK003 / NK003B

    Key Instruments

    • Measure personal exposure
    • Decibel range: 75dB to 140dB
    • Frequency range: 20Hz to 8kHz
    • Units: % dose, dose per hour, dB or Pa2h
    • Class 2 calibrator included\
    • Useful attaché case
  • Specification


    • IEC 61252-1:1993 (Personal Sound Exposure 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.


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


    • Measuring Range: 75-140
    • Linear operating range (IEC61672-1): 67dB


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


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


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


    • Simultaneous Peak and rms


    • LEpd (Sound Exposure Level), PLEpd (Projected LEpd over 8 hours), DOSE% (LEpd compared to criterion level as %) PDOSE% (Projected DOSE% over 8 hours, DOHR (DOSE% per hour), Pa2h (LEpd displayed in Pascal units), Dose per hour, Zpeak (Max. Peak Level). 
    • Other Displays: Elapsed time, Overload, Battery Life


    • The level at which the 8 hour DOSE% = 100%. User selectable between: 80dB, 85dB and 90dB


    • The rate at which the DOSE% doubles. User selectable between: 3dB and 5dB


    • 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)
    • Microphone cable length: 800mm (including rubber sleeve and microphone)
    • Weight: 220gms (including battery)
  • Supplied Accessories


    • Castle GA257B Industrial Noise Dosemeter
    • Castle GA601 Class 2 Sound Level Calibrator
    • Small attaché case 


    • 5 x Castle GA257B Industrial Dosemeter
    • Castle GA601 Class 2 Sound Level Calibrator
    • Large dosemeter kit case
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  • Delivery Information

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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.

    We also offer delivery options for goods required urgently on certain products, all which are sent by DPD/Interlink.

    Our charges for UK deliveries:

    • FREE Delivery (on select products only): typically 3-5 working days*
    • Standard Delivery at £4.95: 2-3 working days
    • Next Working Day Delivery (on select products only) at £7.50
    • Pre-Noon Next Working Day Delivery (on select products only) at £9.50*
    • Pre-10.30am Next Working Day Delivery (on select products only) at £18.50*
    • 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).

    Customers outside the UK:

    Test-Meter.co.uk exports to many countries all over the world. Prices for shipping vary on location and weight/dimensions. Costs are calculated for certain countries at the checkout. If your country is not included in this list please e-mail admin@test-meter.co.uk with your name, address and the items you would like to order for an accurate shipping quote or go to http://www.test-meter.co.uk/test-equipment-export for more information.

    For more information on delivery, please see our terms and conditions.