Produkt-Neuheit

The localization of sound sources with the aid of three-dimensional sound intensity probes has been gaining in importance for some years now.

For this reason, MTG places particular emphasis on the development and manufacture of a comprehensive range of sound intensity probes.

SIS play a crucial role in various applications related to sound measurement and analysis.

A common application of SIS is the determination of the sound power emitted by an object or noise source.

By measuring the sound intensity at various points in the vicinity of the sound source, the total sound power emitted by the object can be calculated.

This is essential for analyzing and understanding the acoustic behavior of technical systems such as machines, vehicles and other devices.

SIS are essential for locating noise sources in complex environments.

The analysis of the intensity distribution enables precise localization of noise emissions, e.g. in troubleshooting or quality control, and is also important in the optimization of noise reduction strategies, noise abatement and environmental assessments.

Other important fields of application include fault diagnosis and determining the cause and location of faults in a wide range of technical systems.

In the areas of R&D or product design, SIS enable product optimization and the development of quieter, more efficient systems.

For this reason, MTG places particular emphasis on the development and manufacture of an extensive range of sound intensity probes.

The highlight s include the SIS 194 3D 1/2" and SIS 194 3D 1/4"

SIS 194 3D 1/2”
• 35 Hz to 1.5 kHz
• 12-pin Lemo®
• Microphone power supply: IEPE

SIS 194 3D 1/4”
• 1 Hz to 10 kHz
• 12-pin Lemo®
• Microphone power supply: IEPE

The sound intensity probe SIS 194 3D allows a simultaneous sound intensity measurement at one point of a room in all three dimensions. For this purpose an arrangement of three one-dimensional sound intensity probes is formed, thus all three axes of the microphone pairs cross in one point and are in a plane perpendicular in each case.

Each of those microphone pairs constitutes a one-dimensional sound intensity probe in conventional design.
In addition to measurement of sound pressure, each individual sound intensity probe -by its two-microphone-technology - enables the acquisition of the sound pressure gradient and thus the sound intensity computation.

The quality of conformity of both measurement capsules, relating to their transfer function, is measured in accordance with DIN EN 61043 and IEC 1043 respectively
and documented as pressure-intensity-distance/residual-intensity-distance for probes.
To each measurement-capsule pair of the SIS 194 3D a measurement report is enclosed. On the basis of this report the compliance with tolerance limits for class 1.
probes is apparent.

SIS 194 3D 1/2”

The SIS 194 3D 1/2" consists of three Measuring Microphone Capsules Pairs MK 290 E (2x MK 222 E) with matched phase response and frequency response. Due to the use of the 1/4” Measuring Microphone Preamplifiers MV 310, sound field distortions (shadowing and diffractions) are minimal. The distance between the microphone pairs is defined by spacers (50 mm). These enable measurements in a frequency range between 35 Hz and 1,5 kHz.

SIS 194 3D 1/4”

The probe consists of two in phase- and frequency response matched measurement-microphone capsules MK 222 E (order drawing MK 290 E) and MK 301 E (order drawing MK 390 E). By the use of the constant current powered 1/4 ‘’ measurement-preamplifier MV 310 the sound field distortions (shading and diffraction) are minimal. The distance between the three microphone capsules is accurately defined by means of a spacer. Thereby measurements are possible in a frequency range from 35 Hz to 10 kHz.

The sound intensity probe SIS 190 double - Measurements without Interruption

The sound intensity probe SIS 190 double allows a simultaneous sound intensity measurement in a very large frequency range.

• 35 Hz to 12 kHz
• 10-pin Lemo®
• Microphone power supply: IEPE

For this purpose an arrangement of one one-dimensional 1/2" sound intensity probe and one one-dimensional 1/4" sound intensity probe is formed.

Due to its two-channel technology each individual Sound Intensity Probe makes it possible not only to measure sound pressure levels but also to record the sound pressure gradient which is needed to calculate the sound intensity.

The SIS 190 double consists of the Measuring Microphone Capsules Pairs MK 290 E (2x MK 222 E) and MK 390 E (2x MK 301 E) with matched phase response and frequency response.

Due to the use of the 1/4” Measuring Microphone Preamplifiers MV 310, sound field distortions (shadowing and diffractions) are minimal.

The distance between the microphone pairs is defined by spacers (6 mm, 50 mm). These enable measurements in a frequency range between 35 Hz and 12 kHz.

The quality of conformance between the microphone pairs with regard to their transforming functions is measured in compliance with DIN EN 61043 and documented as Minimum pressure-residual intensity index for probes.

Each microphone capsule pair comes with a measuring protocol. It shows the tolerance limits for class 1 probes.

Product contents

SIS 190 double, IEPE*/ICP®, Measuring microphone preamplifiers 1/4" MV 310, Measuring microphone capsule pair 1/2" MK 290 E, Measuring microphone capsule pair 1/4" MK 390 E, 2 Adapter A 69.1 1/2"-1/4", Spacer 1/2" 50 mm, Spacer 1/4" 6 mm, Output 10-pin LEMO, connects to a handle, case in aluminium.