Campbell NOR 140 Setup Manual

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USER SET UP GUIDE FOR BUILDING ACOUSTICS

1. Setting up Nor 140

1.1 Measurment Standard

The BS ISO 140-4 is superseded by BS EN ISO 16283-1:2014. The BS ISO 140-4 is no longer current

but is cited in the Building Regulations for England and Wales, Northern Ireland and Scotland. The

Irish regs (SITRI) use ISO 16238 universally.

Applies to sound insulation within a pair of rooms. Determines the steady state 1/3 octave band

filtered white noise level difference and the receiving room equivalent absorption area from which

the standardised level difference is derived. The results can be used to determine whether building

elements have met acoustic specifications, e.g. Building Regulations.

The Norsonic building acoustic kit meets both the BS ISO 140-4 and BS EN 16283-1:2014 standard.

1.2 Nor 140 field calibration

The field calibration of the Nor 140 for building acoustic testing takes place in the normal mode and

will occur as a standard calibration via the orange 'CAL' key. Note: Used calibrator - Nor 1251 Class 1

calibrator – 114 db at 1kH

1.3 Set up Nor 140 for Airborne Testing

To start a measurement for airborne testing you need to select the building acoustic mode – press

#7 on the key pad to choose your mode. You will find Building acoustic mode under #4 – see fig 1.1.

Select airborne testing via #3 – see fig 1.2

Fig 1.1 #7 Mode Options

Registered Office: 12 Alma Square, Scarborough, North Yorks YO11 1JU Registered Company No 3700715

SET UP NOR 140 FOR AIRBORNE TESTING

Fig 1.2 #3 Airborne Testing

Campbell Associates Ltd

Sonitus House,

5b Chelmsford Road Industrial Estate

Great Dunmow, Essex CM6 1HD

T . +44 (01) 1371 871030

F. +44 (01) 1371 879106

hotline@campbell-associates.co.uk

www.campbell-associates.co.uk

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Page 1 1.2 Nor 140 field calibration The field calibration of the Nor 140 for building acoustic testing takes place in the normal mode and will occur as a standard calibration via the orange ‘CAL’ key. Note: Used calibrator - Nor 1251 Class 1 calibrator –...
Page 2 Mainly for RTs usually in larger rooms as its affective by the preformance of the room. 4) Reverberation: Max RT 4s – Ex. Type NOS – Ex.time 5. See fig 1.6 Campbell Associates Ltd Sonitus House, 5b Chelmsford Road Industrial Estate Great Dunmow, Essex CM6 1HD T .
Page 3 NOR 280 AMPLIFIER & NOR 276 DODEC SPEAKER & MEASURMENTS 2. The Equipment 2.1 Setting up the Equipment The full kit contains: Nor 140 EXP Sound level meter Nor 280 Amplifier Nor 276 Full dodec speaker Nor 4514A RT cable...
Page 4 Move the speaker to the receiver room; Select LINE on the amplifier; Plug cable Nor 4514a into the amplifier and conect it to the Nor 140; Do a minimum of 4 (6 recommended) measurements at different representative positions. When all the measurements are done to your satisfaction press the ‘store record’ key to save the file as a full BA file.