Norsonic nor103 User manual
nor103
SOUND LEVEL METER
INSTRUCTION
MANUAL
Nor103 is a small and versatile IEC Class 1 sound level meter. The
combination of a big graphical display and only three function buttons
makes this sound level meter easy to operate, even by non-acousticians.
It displays the current sound pressure level and calculates both sound exposure
level and the equivalent continuous sound level. After the measurement you it
gives you also the Fmax or Cpeak reported and stored. These are basic acoustic
figures that are widely used for general noise measurements and reporting.
Nor103 User Guide – January 2018
Im103_1Ed1R0En
Norsonic is a registered trademark of Norsonic AS. All other
brand or product names are trademarks or registered trade-
marks of their respective companies. Every effort has been
made to supply complete and accurate information. However,
Norsonic AS assumes no responsibility for the use of – nor
for the consequential damages of the use of – this informa-
tion and/or the instrumentation described herein. Furthermore
Norsonic AS assumes no responsibility for any infringement
of the intellectual property rights of third parties, wherever
applicable, which would result from such use. Norsonic AS
reserves the right to amend any of the information given in
this manual in order to take account of new developments.
If you wish to communicate with us, please feel welcome.
Our address is:
Norsonic AS, P.O. Box 24, N-3421 Lierskogen, Norway
Find us on the web: www.norsonic.com
Tel: +47 32 85 89 00,
Fax: +47 32 85 22 08
E-mail: [email protected]
Copyright © Norsonic AS 2017 All rights reserved
Finding the information you need
Thank you for choosing Norsonic! The sound level meter Nor103 have been
designed to give you many years of safe, reliable operation.
The User Guide has been divided into 7 chapters.
Depending on your requirements and your familiarity with sound measurements as
such, you may find that you use some parts of this manual often and others not at all.
The very first chapter acquaints you with the Nor103 and describes its features and
possibilities.
The next section provides a closer look at the instrument with a presentation of all major
parts and the keys of the keyboard.
Calibration is a vital point ensuring that your measurements are sufficiently correct for
the purpose. Therefore, a separate chapter has been devoted to this.
How to measure with the sound level meter is described in the following and outlines
the use of the instrument as a proper sound level meter.
Detailed specifications about the instrument is found in the chapter covering Technical
specifications.
Note that the instruction manual describes a fully equipped instrument. Your Nor103
may not have the additional cables and hence information related to this is not
relevant.
Our objective with this manual has been to address your goals and needs. Please let
us know how well we succeeded!
Overview
Precautions
• Operate the unit only as described in this manual.
• Do not drop the unit. Protect it from shocks and vibration.
• The permissible environmental temperature range for operation of the unit is -10 to
+50°C. Relative humidity must be between 10% and 90%.
• Do not use or store the unit in locations which may be subject to water, direct sun-
light, high temperatures or humidity. Also protect the unit from air with high salt or
sulphur content, gases or the influence of chemicals.
• Do not forget to turn the unit off after use. Remove the batteries if the unit is not to
be used for some time.
• When disconnecting cables, always hold the plug and do not pull the cable.
• To clean the unit, use only a dry cloth or a cloth lightly moistened with water. Do not
use chemical cleaning cloths, solvents or alcohol-based cleaners to prevent the
possibility of deformation and discoloring.
• Do not insert any objects such as pins, metal scraps, conducting plastic etc. into
any opening on the unit.
• Do not disassemble the unit or attempt internal alterations.
• In case of malfunction, do not attempt any repairs. Note the condition of the unit
clearly and contact the supplier.
• When disposing of the unit or the batteries, follow national and local regulations
regarding waste disposal.
Safety
In this manual, important safety instructions are specially marked as shown below.
To prevent the risk of death or injury to persons and severe damage to the unit or pe-
ripheral equipment, make sure that all instructions are fully understood and observed.
Important! Disregarding instructions printed here incurs the risk of damage to the
product.
NOTE! Mentioned about the tips to use this unit properly.
(This messages do not have to do with safety.)
This product can be used in any non hazardous areas
within the environmental conditions given in the technical
specification.
To conform to the EU requirement of the Directive
on Waste Electrical and Electronic Equipment, the
symbol mark on the right is shown on the instrument.
Contents
Chapter 1 Introducing the sound level meter Nor103 ............................1
Chapter 2 Taking a closer look at the instrument...................................3
Chapter 3 Calibrating the instrument......................................................9
Chapter 5 Making a measurement.......................................................11
Chapter 6 Memory handling.................................................................15
Chapter 7 Batteries...............................................................................17
Chapter 8 Technical specifications ......................................................19
1
Norsonic Nor103
Instruction Manual
Introducing the
sound level meter Nor103
The sound level meter Nor103 is a class 1 sound level meter and complies with
IEC61672-1 and is able to measure a number of acoustic parameters. The microphone
is a 1/2-inch electret condenser microphone. It has a wide 107 dB linearity range,
measuring sound levels between 30 and 137 dB, with no need to select the range.
The unit has an LCD panel and 4 operation keys. Optional AC output and DC output
connector is available on request.
It measures the following values:>
• SPL The Instantaneous Sound Pressure Level
• LMAX The Maximum Sound Pressure Level
• Leq The Integrated Equivalent SPL
• LEThe Sound Exposure Level
• LCPEAK The Maximum Peak Level (Peak range only)
The time-weighting can be Fast or Slow. While the measurement is running the
instantaneous SPL is available for inspection, but as soon as the measurement is
terminated the SPL becomes meaningless and therefore not listed in the result tables.
This unit has the following two level ranges.
Wide range: This measures the range between 30 and 137 dB and allows simultaneous
measurement of Lp, Leq, Lmax, and LE.
Peak range: Along with the processing results for wide range, this range also measures
LCpeak, but the lower limit for measurement becomes 65 dB.
No range setting. Only one level range with a dynamic range of 107 dB makes the
setup easy and ensures reliable measurements in all situations – especially
useful for unattended measurements. With its normal microphone this means a meas-
urement range covering levels from the self-noise of the microphone (typically less
than 30 dB A-weighted) to sound with peak values up to 137 dB.
2Chapter 1
Introducing the sound level meter Nor103
Storing and retrieving of results. The results from a measurement is automatically
stored in the non-volatile memory of the instrument. The information may later be dis-
played on the instrument screen or transferred to a PC via an optional special cable
and a software.
The main unit and preamplifier is one single unit so it is not possible to extend the
microphone.
Battery operation. The instrument is powered from two size AAA internal batteries
which typically last for eight hours.
Setting up is easy to do. After you’ve defined wide or peak range, the time constant
and duration of the measurement, you are ready to press the start key. The selection
last used is automatically selected when you power the instrument up again. During
the measurement you have instant access to all measurement values.
With the Nor103 you are able to do all basic noise measurements – community noise,
industrial hygiene, product control and more.
The Norsonic product range contains a wide range of equipment and accessories
for use with acoustic measurements and noise monitoring. We supply enclosures for
permanent monitoring installations, environmental cases for semi-permanent installa-
tions, microphones for applications in tough environments, cables, modems, weather
stations and post-processing software. A detailed presentation of this is available on
the Norsonic home page: www.norsonic.com.
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