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Gracey & Associates Hire

Sound and Vibration Calibrators



We hire noise and vibration 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 NPL. 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.
 

Gracey & Associates   01933 624212
BSI approved for the hire of noise & vibration instruments
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This site has over 400 pages of information on noise and vibration measurements.  


Athough all our meters are delivered with a calibration certificates it is good practice to apply a calibrator, just before and after the measurements to check the instrument is OK and hasn't been damaged in transit. Not only do we recommend this but it standard practice to include these tests noting the type and serial number of the calibrator in reports.

Here is a list of our sound and vibration calibrators.

Acoustic Calibrators - general purpose Daily Hire   *
B&K 4230   94 dB 1 kHz class 2 1/2" & 1" couplers   ** £     2
B&K 4231   94 & 114 dB 1 kHzclass 1 1/2" & 1" couplers   ** £     3
CEL 282 114 dB 1 kHzclass 2 1/2" & 1/4 couplers £     2
CEL 284 114 dB 1 kHzclass 1L 1/2" & 1/4 couplers £     3
Nor 1251 114 dB 1 kHzclass 1 1/2" & 1" couplers   ** £     3
Nor 1252 114 dB 1 kHzclass 2 1/2" coupler £     2

For more details click the relevant blue hyperlink.

** 1/4 inch couplers available for these calibrators - add to order if required.




B&K 4226   Multi-function Acoustic Calibrator - class 1 £ 25 a day *
Bruel and Kjaer 2260 shim
Laboratory working standard - acoustic or electrical tones.

Multi-level and multi-frequency

An ideal calibration system for in house testing of both your microphones and meters

more details





GRAS 42AA   Pistonphone Calibrator - class 1 £ 6 a day *
Bruel and Kjaer 2260 shim
Battery operated for field checks of complete systems and laboratory calibration of measurements microphones

114 dB at 250 Hz or 105.4 dBA - Certification traceable to NPL

more details



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Nor 1253   Precision Sound Calibrator - class 0 £ 15 a day *
Bruel and Kjaer 2260 shim Laboratory reference standard

NPL UKAS [NAMAS] Certification

124 dB at 250 Hz nominal values, the precise values are supplied with the NPL certification

manufacturer's specifications



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B&K 4297   Sound Intensity Calibrator £ 11 a day *
Bruel and Kjaer 2260 shim
Designed for use with the type 2260E Sound Intensity Meter and the type 3595 Sound Intensity Probe Kit

For on-site
squaresound-pressure calibration
squarepressure-residual intensity index verification

B&K sound intensity calibrator details




GRAS 51AB   Sound Intensity Calibrator £ 8 a day *
Bruel and Kjaer 2260 shim For phase and level calibration of both 1/2" and 1/4" sound intensity microphone pairs.

The 51AB may be used for residual intensity testing, level and the particle velocity calibration as specified in BS EN 61043

GRAS sound intensity calibrator details



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B&K 4294   Bruel & Kjaer Vibration calibrator - hand held £ 9 a day *
Bruel and Kjaer 4294 shim
Battery operated for calibration of vibration systems - accelerometers up to 70 grams in weight.

The rms acceleration level of 10 ms-2 = a velocity of 10 mm/s and a displacement level of 10 µm at 159.15 Hz, accuracy ± 3 %

more details


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* Our standard hire charges are based on a 7-day minimum period. Click here for details and other options.

Gracey & Associates   01933 624212
BSI approved for the hire of noise & vibration instruments
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