Gracey & Associates Hire

Environmental Noise Pollution Monitoring

We hire environmental noise meters supplied by the leading manufacturers and we have the most comprehensive range in the UK.

All our meters, microphones, accelerometers etc., are delivered with current calibration certificates, traceable to UKAS. Our ISO 9001 laboratory is audited by British Standards and we are Sponsor Members of the Institute of Acoustics.

Gracey & Associates are an independent organization with over 30 years experience of sound and vibration solutions.

Hire is the cost effective solution with overnight access to the latest and best instrumentation.

Gracey & Associates   01933 624212

BSI accreditation for instrument hire and calibration

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Environmental Noise Pollution Measurement

We have dozens of environmental noise pollution measurement meters available for background noise, noise nuisance and general noise monitoring equipment in accordance with BS 4142, BS 7445 and ISO 1996 British & International Standards. The most popular noise meters, for routine environmental noise surveys, are the Norsonic 116 and the B&K 2236.

Where octave and 1/3 octave band surveys are required, the B&K 2250, B&K 2260, CEL 593, Nor 118, Nor 140 and Nor 121 real time analysers are available. The B&K 2250 is becoming the meter of choice especially now the FFT and Tone Analysis options are available.

For outdoor measurements and longer term surveys, we have environmental noise kits, complete with class 1 outdoor microphones and meter enclosures with rechargeable batteries.

For noise nuisance measurements inside a complainants property we have both the B&K Matron II and Matron III systems as well as the Norsonic 121 Annoyance Recorder.

The instruments in this section are listed alphabetically by manufacturer, click a blue link for more details, calibrators and other accessories.

Relevant Environmental Noise Measurement Standards: BS 4142, BS 7445 and ISO 1996.

B&K 2236B   Environmental Noise Meter

£ 18 a day *

♦  Bruel & Kjaer precision meter with both A and C weightings plus Fast, Slow and Impulse time constants.
♦  Measures Peak, Lmax, Lmin, Leq, SEL and 3 Ln values.
♦  Levels may be logged from 1 second up to hourly intervals.
♦  Large memory.
♦  Short term and long term noise nuisance monitoring.
♦  Low battery consumption make it an ideal noise survey tool.
♦  Delivered with a 4188 microphone and windshield in a carrying case

B&K 2236 details, environmental noise kits and accessories

B&K 2238E   Noise Pollution Monitor

£ 20 a day *

♦  Top of the range B&K Mediator for more detailed noise nuisance measurements - includes
♦  BZ 7123 - Frequency Analysis Software
♦  BZ 7124 - Logging SLM Software
♦  BZ 7125 - Enhanced SLM Software
♦  BZ 7126 - Basic SLM software.
♦  Delivered with a 4188 microphone and windshield in a carrying case

B&K 2238 details + environmental noise monitoring kits

B&K 2238   Matron II   Noise Recording Equipment

£ 38 a day *

Investigating noise nuisance complaints can be a lengthy job often involving many 'out of hours' visits.

Install a B&K Matron-II system, which comprises a B&K 2238 + Sony DAT Recorder, in the complainants property and most of the time consuming work will be done for you and provide irrefutable evidence for mediation or prosecution.

Matron II details

B&K 2250   Hand-held Multi-function Noise Analyser - with audio recording

£ 24 a day *

Bruel & Kjaer's state-of-the-art real time analyser with many features -
♦  120 dB dynamic range - no need to change range.
♦  Simultaneous A, C and Z weighted levels with F, S and I Time Constants
♦  Octave and 1/3 octave band measurements from 6.3 Hz to 20 kHz
♦  Logging - level vs time histories, background noise etc.,
♦  Noise Nuisance Statistics - Lns
♦  Sound Recording of the measured sound levels to identify the individual sound sources.
♦  Audio data is recorded to a SD or CF card for archiving and inclusion in your report.
♦  Voice and text annotation of measurements, pre-set time start/stop, back-erase, context-sensitive
    help, data storage internal and plug-in cards, USB computer interface, free-field & diffuse correction,
    display optimised for day, night indoor and outdoor use .... etc..,

Other options available = Enhanced Logging, FFT (Narrow Band Analysis) and Tonal Analysis options.

B&K 2250 details, options and environmental noise kits

For measurements up to 165 dB add a GRAS 40BF 1/4" microphone

B&K 2250   Matron III   DAT-less Noise Recorder

£ 34 a day *

♦  Investigating noise nuisance complaints can be a lengthy job often involving many 'out of hours' visits.
♦  Install a B&K Matron III system in the complainants property for high quality noise recording and
    simultaneous measurements without being there.
♦  The 2250 includes the usual frequency analysis and logging software plus the BZ 7226 Sound
    Recording option which enables recording of the measured sound levels, to identify the individual
    sound sources.
♦  The audio data is recorded to a removable 1 GB SD memory card for subsequent archiving and
    inclusion in your noise abatement reports.
♦  Delivered in a secure case with remote control so system cannot be 'tampered' with.

Matron III details

B&K 2260B   Noise Nuisance Investigator

£ 26 a day *

Hand-held real time analyser with the BZ 7210 Sound Analysis software, PC compatible filing system and large memory.

The 2260 Investigator is a Class 1 sound level meter with real-time displays of frequency analysis, 1/3-octave spectra and statistical distributions.

Ideal for environmental noise surveys and gathering field data for further analysis

B&K 2260B environmental options and details

B&K 2260F   Environmental Noise Nuisance Investigator - enhanced

£ 33 a day *

Modular real time sound analyser with all the features of the 2260B above :-

but includes the BZ 7206 Enhanced Sound Analysis Software

B&K 2260F details and environmental noise monitoring kits

B&K UA 1404   Outdoor Microphone Kit

£ 7 a day *

For use with the B&K 2236, 2238, 2250 and 2260 analysers.

Weather protection system which fits over the standard microphone and uses an incidence corrector to compensate for the vertically mounted microphone and weather

See also the environmental noise kits linked to each meter description.

B&K UA 1404 details

CEL 593   Real Time Sound Analyser

£ 29 a day *

Hand held, battery operated, real time octave and third octave sound analyser - 12 Hz to 20 kHz.
Measures and calculates the commonly required, time averaged parameters and statistical data.
Large memory.

Three modes of operation -
♦  Real time sound analyser mode:- with snapshot storage - broad band measurement of SPL, Max, Min,
    Leq, ILeq, Lavg, Lin Peak, C Peak plus 1/3 or octave spectra of SPL, Max and Leq.
♦  Event analyser mode:- either timed or by threshold with delays up to 30 seconds - broad band and
    spectra measurements of Max, Duration, SEL, Event Leq, Lin Peak, C Peak and 1 sec Max.
♦  Environmental noise mode:- with 5 Lns and measurement periods selectable in steps from 0.5 s to
    60 min - broad band Max, Min, period SEL, Leq, ILeq, Lavg, Lin Peak, C Peak plus 1/3 or octave
    spectra Max and Leq as well as the 5 Ln values.

CEL 593 details

GA 91E1-00

Outdoor Meter Enclosure + rechargeable batteries etc.,

£ 3 a day *

For use with the B&K 2236, 2238, 2250, 2260 or the Nor 110, 116, 118 and 140 analysers.

Includes two 12 V, 12 Ah batteries, charger and microphone tripod etc., all in a "weather proof" case.

GA 91E1-00 details

GRAS 41AL   Outdoor Microphone System

£ 8 a day *

The 41AL outdoor microphone is designed to maintain a microphone's specifications when fitted with a rain cover and windshield.

The kit includes a 3 m preamplifier cable with a Lemo 1B connector, a desiccator unit and a coupler with correction values for a range of calibrators.

GRAS 41AL details

Kestrel 2000   Pocket Weather Meter

£ 1 a day *

♦  Small battery operated field unit - measures environmental conditions quickly and accurately.
♦  Three button control with clear digital display
♦  Wind Speed
♦  Temperature
♦  Wind Chill

more details

Nor 116   Precision Environmental Noise Meter

£ 12 a day *

♦  This meter is our most popular environmental noise and background noise meters with superb time domain
    analysis functions.
♦  Fast, Slow and Impulsive measurements of Leq, Lmax, Lmin, SEL, Peak plus Ln values.
♦  Large memory, parallel A and C measurements with graphical and numerical displays.
♦  Measurement periods selectable from a second up to several days and in the level recorder
    - time mode.
♦  The records may be annotated to highlight individual events during the measurement


Nor 116 details, options and environmental noise kits

Nor 118   Precision Environmental Noise Analyser

£ 22 a day *

♦  Norsonic Real Time Noise Analyser with parallel A and C (or Z) networks.
♦  Measurement periods from a second up to several days with level recorder - time mode option.
♦  Filters - 1/1 and 1/3 octave
♦  Statistics - Ln values, all bands, all networks
♦  Level v time - electronic level recorder
♦  Memory
♦  Trigger

Nor 118 details, options, kits and accessories

Nor 118 +   Multi-function Noise Pollution Meter Analyser

£ 32 a day *

Norsonic 118 Real Time Precision Sound Analyser - as above
+
Multi-spectra
Noise generator
Reverberation calculations
Sound power and other additional options

Nor 118 + details

Nor 140   Environmental Noise Meter with filters, statistics and logging

£ 25 a day *

Features.
♦  Fast, Slow and Impulsive measurements of Leq, Lmax, Lmin, SEL, Peak plus Ln values.
♦  Parallel A and C measurements with graphical and numerical displays.
♦  Filters - 1/1 and 1/3 octave
♦  Statistics - Ln values, all bands, all networks
♦  Level v time - electronic level recorder
♦  Measurement periods from a second up to several days noise monitoring with level recorder
    time mode option.
♦  Memory - internal 'flash' and SD card

more 140 details, options and environmental noise kits

Relevant Environmental Noise Measurement Standards: BS 4142, BS 7445 and ISO 1996.

* Our standard hire charges are based on a 4-day minimum period, other options.

Gracey & Associates   01933 624212

BSI accreditation for instrument hire and calibration

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over 500 pages of information plus a glossary, see also our calibration service.