About Noise Dosimeter

Noise dosimeter NB-14 that can be used to measure personal exposure.

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Features

１．Easy Operation

NB-14 was developed so that anyone can easily perform measurements, even those with no measurement experience. Our hope is to make measurement easy, allowing our customers to focus on higher value-added tasks.

 

2．Compact, lightweight and wearable

Lightest in the industry：72g
The most compact size in the industry：85 × 43 × 22 mm

Light and compact enough to forget you're wearing a noise dosimeter. 


3．Simple report generation

Reports are automatically output using the software AS-05 Viewer. Customization is also available.

 Read more information about the software AS-05 Viewer
About free software AS-05 Viewer

 

4．Good balance (Price × Quality × Function)

 NB-14 is reasonably priced. RION's strength over other products is that it combines high quality, reliability, sufficient measurement functions, and ease of use, all at a low price.

     

    How to use the Noise Dosimeter NB-14

    The operation is very easy and only required 4 steps in total.

    Noise dosimeter is required to be attached near the neck or shoulder in order to measure the equivalent noise level close to the worker's ears. The area within a 30cm radius from your ear is called "hearing zone." Please attach the NB-14 within the zone.

    diagram of hearing zone

    Attach the noise dosimeter on your dominant arm. If the shoulder width is narrow, please attach it vertically.

    Thanks to the crocodile clip, the device will not fall out even during vigorous movements.

     

    Specification

    Applicable standards  
    • IEC 61252:1993+AMD1:2000+AMD2:2017
    • IEC 61672-1: 2013 class 2
    • JIS C 1509-1: 2017 class 2
    • VCCI class B
    • CE Marking
    • EMC Directive 2014/30/EU
    • RoHS Directive 2011/65/EU
    • UKCA Marking
    • China RoHS　

    Measurement functions

    (simultaneous measurement and processing)
    • Equivalent continuous A-weighted sound pressure level
    • Equivalent continuous C-weighted sound pressure level
    • C-weighted peak sound level
    • Percentage of the legal limit of a physical quantity of exposure DOSE
    Microphone
    • UC-52
    Store cycle
    • 1 sec.
    Measurement level range
    • Equivalent continuous A-weighted sound level 58 dB to 143 dB
    • Equivalent continuous C-weighted sound level 58 dB to 143 dB
    • C-weighted peak sound level 75 dB to 146 dB
    Frequency range of measurement
    • 20 Hz to 8 kHz
    Display Power supply status, measurement status, overload/under-range bar graph (Percentage of the legal limit of a physical quantity of exposure DOSE)
    Internal memory
    • Stores approximately 48 hours’ worth of measurement data
    Power
    • Built-in lithium-ion rechargeable battery (secondary battery)
    • Continuous operating time: 12 hours or more from a fully charged state (within the operating temperature range)
    Operating temperature/ humidity range
    • Temperature: -10°C to 50°C
    • Humidity: 10% to 90% RH (no condensation)
    Size and weight
    • 85(H)×43(W)×22(D)mm
    • Approx. 72 g (excluding attachment holder)
    Dustproof and waterproof performance
    • IP54 (expect microphone)
    Accessories
    • USB Cradle for Battery Charging and Communication for NB-14 *1, *2
    • Dedicated windscreen
    • Alligator clip holder

     

    *1 Allows setting for the NB-14 to be made from a computer and transfers the measurement data to the computer. NB-14 is attached to the charging part, and the USB Type-C to Type-A cable（computer side）is connected to the charging part.

    *2 A separate charger (commercially available) is required for charging. Voltage and current required for charging: 5 V, 185 mA
    Options Sound Calibrator(NC-75)

     

    Further information on calibration

     Read more information about the calibrator NC-75.