The document details the technical specifications and applications of various sound level meters (SLMs) and analyzers compliant with international standards for measuring occupational and environmental noise. Key features include data logging capabilities, integration of sound parameters, and compliance with directives on noise monitoring and assessment across different environments. Specific models mentioned include the HD 2010UC, HD 2010UC/A, and HD 2110L, each suited for different measurement needs such as occupational safety and sound insulation evaluation.

1. Machines Directive 2006/42/CE – ISO 3741,3743, 3744, 3746
Occupational noise – ISO 9612/2011– UNI 9432/2008 - D.Lgs.Occupational noise – ISO 9612/2011– UNI 9432/2008 - D.Lgs.
81/2008
Environmental noise – Directive 2002/49/CE – Italian D.M.
16/3/1998
Sound insulation – ISO 140x - ISO 717 - UNI 11367/2010

2. HD 2010UC integrating sound level meter Type 1 or 2
HD 2010UC/A integrating SLM/analyser Type 1 or 2
HD 2110L integrating SLM/analyser Type 1

3. Integrating sound level meter HD 2010UCIntegrating sound level meter HD 2010UC
Occupational noiseOccupational noise –– MachinesMachines –– MonitoringMonitoring –– VehicleVehicle
noisenoise
Technical Specifications
IntegratingIntegrating soundsound levellevel metermeter withwith ½”½” freefree fieldfield
electretelectret condensercondenser microphone,microphone, detachabledetachable
preamplifier,preamplifier, forfor freefree fieldfield andand diffusediffuse fieldfield
measurementsmeasurements (software(software correction)correction);;
According to IEC 61672 type 1 or 2 (I.N.RI.M.
type approved).
Corrections for random field measurements andCorrections for random field measurements and
for windshield or all weather environmental
protection use.
Dynamic range: 30dB – 140dB
Linearity domain: 80dB
Options:
– Data Logger
– Advanced analyser

4. Dynamic range HD 2010UCDynamic range HD 2010UC
Noise source Subjective evaluation dB
Jet fighter Takeoff at 30m 140
Gunnery at 3m 130
Clenching machine Deafening (pain) 120
Motorycle accelerating (few meters) 110
Clacson 100
Noisy urban road Very strong 90
60-140
50-130
40-120
30-110
HD 2010UCHD 2010UC SafetySafety –– MachinesMachines –– MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Noisy urban road Very strong 90
Noisy pub strong 80
Train at 30m 70
Road traffic noise (fluid) moderate 60
Normal conversation 50
TV low volume light 40
Residential area 30
burring of bug at 1m 20
Rustle of a leaf Very light
20µPa
10
Udibility threshold 0

5. Integrating SLM HD 2010UCIntegrating SLM HD 2010UC
Measures 3 parameters with parallel time
constants F, S, I and frequency weighting
A, C and Z
Descriptors: Lpk, Leq, LI,eq, Lp, Lpmax, Lpmin,
Ln, LE
Fast time profile acquisition 1/8s of LAFp
HD 2010UCHD 2010UC SafetySafety –– MachinesMachines –– MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Recording of 500 single measurements
Data logging:
– Single integration:
• LAFp 125ms + 3 parameters 0.5s
– Multiple integration from 1s to 1 hour:
• 3 parameters from 1s to 1 hour
– Reports:
• 5 parameters from 1s to 1 hour
• LN statistic (percentiles)

6. Integrating SLM HD 2010UCIntegrating SLM HD 2010UC
Complete statistic analysis:
– Probability distribution
– LN Percentile calculation from L1 to L99.
Noise events identification:
– Activation and de-activation thresholds
– Duration filter
– Pre and post trigger intervals
HD 2010UCHD 2010UC SafetySafety –– MachinesMachines –– MonitoringMonitoring –– Vehicle NoiseVehicle Noise

7. Integrating SLM HD 2010UCIntegrating SLM HD 2010UC
APPLICATIONS
Machine Sound Power measurements:
– ISO 3741, 3743, 3744, 3746
Occupational noise measurements:
– D.Lgs. 81/2008 and UNI 9432
– Impulsivity index evaluation
USE Limitations
– Only global measurements (no
spectra)
– Evaluation of PPE efficiency with
SNR or HML methods
HD 2010UCHD 2010UC SafetySafety –– MachinesMachines –– MonitoringMonitoring –– Vehicle NoiseVehicle Noise
– Impulsivity index evaluation
Environmental noise (Monitoring)
– Noise mapping, European
Directive 2002/49/CE and D.Lgs.
194/2005
– Road traffic noise, railway and
Airport noise,
– D.M. 16/03/1998 (partial
conformity)
– Impulsive noise identification
– No spectrum analysis > NO tonal
components identifications

8. Integrating SLM/Analyser HD 2010UC/AIntegrating SLM/Analyser HD 2010UC/A
TECHNICAL SPECIFICATIONS
Integrating Sound Level Meter with
same specs than HD 2010UC
conforms IEC 61672 type 1 or 2
I.N.RI.M type approved
HD 2010UC/AHD 2010UC/A SafetySafety –– Building acousticBuilding acoustic –– Sound insulationSound insulation ––
MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
1/1 and 1/3 Octave Spectrum
Analyser according to IEC 61260
type 1
– Octave bands 32Hz-8 kHz
– Third Octave bands 25Hz-
12.5kHz.
Options:
– 1/3 octave bands
– Reverberation time
measurement
– Advanced Analyser

9. Data logging:
– Single integration:
• LAFp 125ms + 3 parameters at
0.5s sampling
– Multiple integration from1s to 1 hour:
• 3 descriptors
• 1/1 and 1/3 octave bands
HD 2010UC/AHD 2010UC/A SafetySafety –– Building acousticBuilding acoustic –– Sound insulationSound insulation ––
MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Integrating SLM/Analyser HD 2010UC/AIntegrating SLM/Analyser HD 2010UC/A
– Reports from 1s to 1 hour:
• 5 parameters
• 1/1 and 1/3 octave bands
• LN percentile statistics
Reverberation Time measurements from
100Hz to 10kHz (from 125Hz to 8kHz in
1/1 octave bands):
– Interrupted noise method
– Impulse response method with
Schroeder’s back integration
calculation

10. APPLICATIONS
Machine’s Sound power measurements:
– ISO 3741, 3743, 3744, 3746
Sound insulations
Occupational noise measurements:
– ISO 9612 - D.Lgs. 81/2008 - UNI 9432
– Impulsivity index
LIMITATIONS OF USE
– 1/3 octave Spectral anlysis limited from 25
Hz to 12.5 kHz
HD 2010UC/AHD 2010UC/A SafetySafety –– Building acousticBuilding acoustic –– Sound insulationSound insulation ––
MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Integrating SLM/Analyser HD 2010UC/AIntegrating SLM/Analyser HD 2010UC/A
– Impulsivity index
Environmental noise measurements
– Noise Mapping, Directive 2002/49/CE
– Road traffic noise, railway and airport noise
– D.M. 16/03/1998 (partial conformity)
– Community noise
Building acoustics
– ISO 140 measurements
Architectural acoustic
– UNI 33821 and UNI 3382-2
– Identification of tonal components with
standard 1/3 octave bands (no shifted 1/3
octave bands).
– Clarity, Definition and Lateral Energy
calculation not possible (ISO 3382-1)

11. Integrating SLM/AnalyserIntegrating SLM/Analyser HD 2110LHD 2110L
TECHNICAL SPECIFICATIONS
Integrating Sound Level Meter with ½” free field
polarized 200V microphone, detachable preamplifier,
for free field and random field measurements (software
correction);
Conforms to IEC 61672 type 1 (I.N.RI.M type approval)
1/1 and 1/3 octave Spectrum analyser;
Conforms IEC 61260 type 1
– Octave bands from 16Hz to 16kHz
HD 2110LHD 2110L SafetySafety –– Building acousticBuilding acoustic –– Environmental AcousticsEnvironmental Acoustics --
Sound insulationSound insulation –– MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
– Octave bands from 16Hz to 16kHz
– Third octave bands from 16Hz to 20kHz or from 14Hz to
18kHz (shifted band)..
FFT analyser
– FFT from 12.5Hz to 22kHz with resolutions 1.5Hz up to 95Hz
Random field corrections and for windshield or all-
weather environmental protection.
Measurement range: 20dB – 140dB
Linearity range: 110dB
Options:
– 1/3 octave spectral anlysis (including shifted 1/3oct filters)
– Reverberation time measurement
– FFT analyser

12. Dynamic range HD 2110LDynamic range HD 2110L
30-140
20-130
HD 2110LHD 2110L SafetySafety –– Building acousticBuilding acoustic –– Environmental AcousticsEnvironmental Acoustics --
Sound insulationSound insulation –– MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Noise source Subjective evaluation dB
Jet fighter Takeoff at 30m 140
Gunnery at 3m 130
Clenching machine Deafening (pain) 120
Motorycle accelerating (few meters) 110
Clacson 100
Noisy urban road Very strong 90Noisy urban road Very strong 90
Noisy pub strong 80
Train at 30m 70
Road traffic noise (fluid) moderate 60
Normal conversation 50
TV low volume light 40
Residential area 30
burring of bug at 1m 20
Rustle of a leaf Very light
20µPa
10
Udibility threshold 0

13. APPLICATIONS
Machine Sound Power measurements:
– ISO 3741, 3743, 3744, 3746
Sound insulations
Occupational noise measurement:
– D.Lgs. 81/2008 ed UNI 9432
USE LIMITATIONS
HD 2110LHD 2110L SafetySafety –– Building acousticBuilding acoustic –– Environmental AcousticsEnvironmental Acoustics --
Sound insulationSound insulation –– MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Integrating SLM/Analyser HD 2110LIntegrating SLM/Analyser HD 2110L
– D.Lgs. 81/2008 ed UNI 9432
– Misura dell’indice di impulsività
Environmental noise measurement – automatic
identification of events
– Noise Mapping, Directive 2002/49/CE
– Road traffic noise, railway and airport noise
– D.M. 16/03/1998
– Community noise
Building acoustics
– ISO 140 measurements
Architectural acoustic
– UNI 33821 and UNI 3382-2
– Clarity, Definition and Lateral Energy
calculation not possible (ISO 3382-1)

14. HD 2110LHD 2110L SafetySafety –– Building acousticBuilding acoustic –– Environmental AcousticsEnvironmental Acoustics --
Sound insulationSound insulation –– MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Integrating SLM/Analyser HD 2110LIntegrating SLM/Analyser HD 2110L
SLM/Analyser screens
• SLM
• FFT• FFT
• 1/3octave
• 1/3octave +
Eq.Loudness curves

15. Spectral analysis:
– Average spectrum
– Multispectrum from 0.5s
– Min and Max spectrum
analysis
Profilo Leq Short
40
50
60
70
80
90
100
livello[dB]
1ms
p[t]
HD 2110LHD 2110L SafetySafety –– Building acousticBuilding acoustic –– Environmental AcousticsEnvironmental Acoustics --
Sound insulationSound insulation –– MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Integrating SLM/Analyser HD 2110LIntegrating SLM/Analyser HD 2110L
analysis
Measurement of Short-Leq profile in
1/32s periods.
Udibility evaluation due to real time
superimposition of isophonic
(Eq.Loudness) curves over the
measured 1/3 octave spectrum (ISO
226:2003).
30
34 35 36 37 38 39 40
tempo [s]

16. SCHEME
• ½” , 200V polarized, detachable microphone, free
field response or random field with electronic
correction
• Detachable preamplifier with variable gain and
cable driver
HD 2110LHD 2110L SafetySafety –– Building acousticBuilding acoustic –– Environmental AcousticsEnvironmental Acoustics --
Sound insulationSound insulation –– MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Integrating SLM/Analyser HD 2110LIntegrating SLM/Analyser HD 2110L
• A/D converter with hi-resolution and 48Ksps
sampling
• I/O digital audio with S/PDIF interface
• DSP for parallel calculation of acoustic filters and
octave band and FFT spectral analysis
• uP (micro) for I/O periferals management (display,
ports, memory, kayboard) and data record on
internal Flash memory

17. SLM screen of HD 2110LSLM screen of HD 2110L
• 5 descriptors (3 for HD2010UC) without any limit on weightings selections
are displayed in numerical format and updated 2 time per second
• Instantaneous parameters are displayed as maximum value every 0.5s
• A pseudo-analogic band indicates the istantaneous noise level
Integration
time
Measurement
time
HD 2110LHD 2110L SafetySafety –– Building acousticBuilding acoustic –– Environmental AcousticsEnvironmental Acoustics --
Sound insulationSound insulation –– MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
State
indicator
Descriptors
Integration
time
Measurement
time
Battery
autonomy
Weightings
Analog band and
measurement
range 20
Leq
RUN
indicatore di sovraccarico
in corso
memoria
PAUSE
REC
STOP
WarmUpW
PrintP
HOLDH
M Monitor
R Replay
OVERLOAD INDICATOR
OL REAL TIME
OL MEMORY

18. PROFILE screen of HD 2110LPROFILE screen of HD 2110L
• Displays the first 100 samples of an acoustic descriptor (selectable)
• Sampling intervall programmable from 1/8s to 1 hour
• Pseudo-analog bar indicates the noise instantaneous level
• In black it is displayed the noise event when detected
HD 2110LHD 2110L SafetySafety –– Building acousticBuilding acoustic –– Environmental AcousticsEnvironmental Acoustics --
Sound insulationSound insulation –– MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Descriptor
Overall Level
Measurement
time
f. Weighting
Sampling period
Scale dB/div
Scale Min-Max

19. OCTAVE screen of HD 2110LOCTAVE screen of HD 2110L
• Octave and Third octave bands with wide band indicator (Overall)
• Average spectrum or multispectrum from 0.5s to 1 hour
• Min and Max spectrum identification
• Udibility analysis with isophonic curves identification (ISO 226)
Profile N. Spectra
HD 2110LHD 2110L SafetySafety –– Building acousticBuilding acoustic –– Environmental AcousticsEnvironmental Acoustics --
Sound insulationSound insulation –– MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Acquisition
mode
Overall
level
Measurement
time
Auxliary
weighting
Time constant
Scale dB/div
Scale reference
time

20. FFT screen of HD 2110LFFT screen of HD 2110L
• FFT spectrum in 3 bands from 12Hz to 22kHz with resolution 1.5 Hz
(12Hz - 300Hz), 12Hz (300Hz - 3kHz) and 100Hz (3kHz – 22kHz)
• Multispectrum analysis from 0.5s
FFT band
HD 2110LHD 2110L SafetySafety –– Building acousticBuilding acoustic –– Environmental AcousticsEnvironmental Acoustics --
Sound insulationSound insulation –– MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Ist.Level
Measurement
time
Frequency
Linear axis
Spectral
resolution
Scale dB/div
FFT band
Scale reference
Acquisition
mode

21. STATISTIC screen of HD 2110LSTATISTIC screen of HD 2110L
• One descriptor statistic (LFp, Leq o Lpk) in class of 0.5dB
• Sampling from 1/8s to 1 hour
• Probability distribution and percentile levels graph
HD 2110LHD 2110L SafetySafety –– Building acousticBuilding acoustic –– Environmental AcousticsEnvironmental Acoustics --
Sound insulationSound insulation –– MachinesMachines -- MonitoringMonitoring –– Vehicle NoiseVehicle Noise
Istant.level
Measurement
time
Probability
axes %
Sampling interval
Scale dB/div
Descriptor
Scale reference
Acquisition
mode

22. IdentificationIdentification ofof tonaltonal componentcomponent
accordingaccording toto DD..MM.. 1616//0303//19981998
• Only time and frequency stationary Tonal
Components
• 1/3 octave band spectral analysis form 20 Hz
to 20 kHz
Tonal component identification with HD 2110LTonal component identification with HD 2110L
• Minimum spectrum with Fast time constant
• Difference > 5dB beetween the tonal band and
adjacent bands
• For Tonal Components placed beetween two
central 1/3oct standard frequencies, it’s
possible to use higher resolution filters or
alternative central frequencies.
• Udibility comparing tonal component with
eq.loudness curves (ISO 226)

23. Hidden Tonal Components identification HD 2110LHidden Tonal Components identification HD 2110L
Identification of hidden tonalIdentification of hidden tonal
componentscomponents
• 1/3 octave band spectral analysis
from 14Hz to 18kHz with shifted
bands.
70Hz component with
standard 1/3 bands
• Spectral analysis with capture of
the minimum overall A of Fast
spectrum in user defined period from
1s to 1 hour.
• Evaluation of udibility of the tonal
component using real time
superimposition of isophonic curves
(ISO 226).
70Hz component
with shifted bands

24. Reverberation Time measurementReverberation Time measurement
with SLM/Analysers HD 2010UC/A and HD 2110Lwith SLM/Analysers HD 2010UC/A and HD 2110L
• Guided procedure on the Sound Level Meter display
• Interrupted noise method or impulse response method
• Impulse response: back integration calculation (Schroeder) with
background noise correction
• Reverberation time calculation EDT, T10 , T20 e T30 for each band
Linear
correlation
coefficient
Descriptors:
Max level
Background level
EDT
T60 on 10dB
T60 on 20dB
T60 on 30dB

25. • Decay profiles acquired at 1/32s (profiles with Schroeder integration
for impulse response) for all octave and third octave bands from
100Hz to 10kHz
• Possibility to check profile directly on the screen and calculate T60
on selected user interval
Reverberation Time measurementReverberation Time measurement
with SLM/Analysers HD 2010UC/A and HD 2110Lwith SLM/Analysers HD 2010UC/A and HD 2110L
Freq.Band
T60 calculation on
user defined interval
beetween cursors
Sampling
period
Descriptor

26. • Reverberation time calculation EDT, T10, T20 and T30 for all
frequency bands
• Automatic filtering on linear correlation coefficient (>0.95) and on
S/N ratio
Reverberation Time measurementReverberation Time measurement
with SLM/Analysers HD 2010UC/A and HD 2110Lwith SLM/Analysers HD 2010UC/A and HD 2110L

27. Acoustic calibratorAcoustic calibrator
HD 2020HD 2020
SoundSound calibratorcalibrator conformingconforming toto typetype 11
requirementsrequirements (IEC(IEC 6094260942))
•• ForFor standardstandard ½”½” microphonesmicrophones
•• LevelsLevels 9494 andand 114114 dBdB @@11 kHzkHz
•• CompatibleCompatible withwith everyevery ½”½” standardstandard
microphonemicrophone:: nono correctioncorrection forfor equivalentequivalent
loadload volumevolume
•• NoNo correctioncorrection forfor staticstatic pressurepressure
•• InternalInternal clockclock withwith automaticautomatic checkcheck ofof
certification/calibrationcertification/calibration expiryexpiry datedate
•• VeryVery smallsmall dimensiondimension