Gracey & Associates Hire

Sound Insulation and Building Acoustics Instruments

Bruel & Kjaer 2260 Investigator with BZ 7204 building acoustics module including a noise generator and all the necessary software for one person to make measurements in accordance with the BS and ISO Standards various options include:- Hire a meter with the BZ 7204 software Hire the BZ 7204 software for use with your own 2260 meter Hire a 2260D plus amplifiers, speakers and other accessories to 'tailor' a kit Hire one of our airborne and/or impact building acoustics kits more details + building acoustics kits

Hand-held 2260 meter with the BZ 7205 intensity software. The combination of 2260E and the 3595 Sound Intensity Probe Kit enables sound intensity measurements of Sound Reduction Index to ISO 717-1 and flanking investigations more details + sound intensity kits

An impact sound generator, for impact sound measurements to national and international standards BS EN ISO 140 and BS EN ISO 717 For hire as stand alone instrument or part of a Building Acoustics Kit more details.

The Bruel & Kjaer 3361 measures RASTI and related parameters directly. RASTI - Rapid Speech Transmission Index is a method for measuring speech intelligibility - for example in a lecture hall or over any public address system. The 3361 has two components:- 4225 - Transmitter - sends out a special test signal, either directly or over the PA system 4419 - Receiver - analyses the signal and calculate the RASTI and other values. more details

Manufactured in accordance with the requirements of BS EN ISO 11546 to enable the B&K 3207 or Nor 211 tapping machine to be used as a noise source for testing the acoustic properties of small enclosures details

Norsonic single channel real time analyser with internal noise generator and RT calculator - ideal for survey work. We supply complete kits, or just order a noise output cable so you can use your own amplifiers, speakers etc., add a tapping machine if required. Sound Insulation Ratings are made using the tables in the Standard(s). For fully automated methods see the B&K 2260D or the Nor 121 systems more details + building acoustics kits

Real time, dual channel analyser with extensive building acoustics features and settings for a wide range of BSI ISO insulation measurements. Built-in noise generator, reverberation time meter and insulation rating tables. The standard 121 includes the same software, but this version is delivered with an additional microphone, preamplifier and 2 m cable so it's a fully functional dual channel analyser Airborne and impact kits available including 60 m of microphone extension cables and under-door tape cables, noise sources etc., more details + building acoustics kits

The sound power levels stated are when used with a Nor 260 or Nor 280 power amplifiers which also include a white and pink noise generator. Nor 213 spherical noise source with sound power output of up to 115 dB Specification - 100 W : 12 Ω : 450 mm Ø. Nor 223 spherical noise source with sound power output of up to 118 dB Specification - 200 W : 6 Ω : 500 mm Ø more details

Portable 200 W, 120 dB SWL noise radiator with omni-directional characteristics in accordance with BS EN ISO 140, when mounted on a hard reflecting surface. Matched for continuous sound power levels up to 120 dB in the range 50 Hz to 5000 Hz when used with a Nor 260 or Nor 280 power amplifier / noise generator more details

Power amplifier with internal noise generator. Ideal for use with a Nor 250 hemi-dodecahedron or the Nor 213 and 223 full dodecahedron speakers and output sound power levels of up to 120 dB. Mains operated. Output - 250 W continuous or 1 kW peak into 4 Ω load more details

Power amplifier with internal noise generator. Ideal for use with a Nor 250 hemi-dodecahedron or the Nor 213 and 223 dodecahedron speakers for output sound power levels of up to 120 dB. Mains operated. Output - 500 WRMS into 4 Ω load more details

Type 0 real time analyser - combines the advantages of a full performance laboratory analyser with the flexibility of battery power for field applications. Single and multi spectra measurements Octave, 1/3, 1/12 and 1/24-octave + FFT A : B : C, Linear, human vibration plus user defined networks. 0.1 Hz to 20 kHz frequency range in both channels Time constants selectable from 1/16 seconds Building Acoustics software built-in more details Sound Intensity software also built in - see the GRAS 50AI intensity probe