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Sound and Vibration Instrument Hire and Calibration

Sound Intensity Meters, Measurement and Probes


Sound intensity probes are directional, so you can isolate and measure individual noise sources in reverberant sound fields, i.e. factories, plant rooms etc. For example you could analyse the noise from a pump driven by a noisy electric motor and gearbox.


Using Sound Intensity techniques you can make building acoustics measurements, look for Flanking Transmission Paths and Leak Detection.

Sound level meter microphones are omnidirectional, by design, so the measurement of sound power requires anechoic or fully reverberant rooms. Sound intensity probes, on the other hand, enable you to derive the sound power from the measured sound intensity of a noise source in the work place.

Sound intensity measurements generally fall into two categories, the survey and the precision method, as specified in BS EN ISO 9614

B&K 2260E : Bruel & Kjaer Sound Intensity Meter - hand held  
Bruel & Kjaer Sound Intensity Meter

The Bruel & Kjaer 2260E has been withdrawn, the following details are for information.

Bruel & Kjaer hand-held 2260 meter with the BZ 7205 intensity software.

The combination of B&K 2260E and the B&K 3595 Sound Intensity Probe Kit enables sound intensity measurements of Sound Reduction Index to BS EN ISO 717-1 and flanking investigations

B&K 2260 Sound Intensity Meter - details

B&K 3595 : Bruel & Kjaer Sound Intensity Probe Kit  
Bruel & Kjaer Sound Intensity Probe

The Bruel & Kjaer 3595 has been withdrawn, the following details are for information

The 3595 is a two-microphone probe kit for measuring sound intensity.

Designed for use with 2260E Hand-held Sound Intensity System, the probe set includes the 1/2" Sound Intensity Microphone Pair Type 4197 enabling 1/3-octave centre frequency measurements.

B&K 3595 Sound Intensity Probe details
B&K 4297 : Bruel & Kjaer Sound Intensity Calibrator  
Sound Intensity Calibrator

The Bruel & Kjaer 4297 has been withdrawn, the following details are for information

The B&K 4297 is used for on-site sound pressure and pressure residual intensity index verification.

It's most important and unique feature is that there is no need to dismantle the sound intensity probe for calibration

The 4297 is a complete sound-intensity calibrator in one compact, portable unit with built-in sound sources. The acoustic feedback system automatically adjusts for variations in atmospheric pressure and fulfils the requirements of the BS EN 61043 standard.

B&K 4297 Sound Intensity Calibrator details
GRAS 50AI : GRAS Sound Intensity Probe  
GRAS Sound Intensity Probe

GRAS 50AI has been withdrawn, the following information is for reference purposes only.

The GRAS 50AI is durable and easy to use probe that fully complies with the requirements of IEC 1043 for Class 1 sound intensity probes.

The sound intensity probe includes a set of 1/2" sound intensity microphones type 40AI, with spacers, adaptors, preamplifiers and a remote control handle to control the complete data acquisition process from the probe handle, when used with the Nor 840 analyser.

GRAS Sound Intensity Probe details

GRAS 51AB : GRAS Sound Intensity Calibrator £ 8 a day *

GRAS Sound Intensity Calibrator

For phase and level calibration of both 1/2" and 1/4" sound intensity microphone pairs.

The GRAS 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
GRAS 40AK : GRAS Sound Intensity Microphone Pair £ 12 a day *

GRAS Sound Intensity Microphones

The GRAS 40AK set includes two phase matched 1/2" intensity microphones, spacers and 1/4" preamplifier adaptors.

The microphones have a free field response optimised for use in face to face configuration intensity probes and have high sensitivity to enable low level measurements.

GRAS Sound Intensity Microphone Set details

GRAS 12AA : GRAS Microphone Power Supply - dual channel £ 5 a day *

GRAS Microphone Power Supply

GRAS dual channel, battery operated power supply for GRAS, Norsonic and other compatible preamplifiers with Lemo 1B 7-pin connectors.

Ideal for use with GRAS 41AL outdoor microphone systems when the sound level meter to be used does not have Lemo preamplifier inputs and / or polarisation voltage supplies.

GRAS 12AA Microphone Supply details
* Our standard hire charges are based on a 4-day minimum period, details other options

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