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NEW - The sound intensity probe SIS 190 double - Measurements without Interruption
2020-06-17 10:21:10, Microtech Gefell GmbH
Sound intensity measurements enable e.g. the determination of the sound power of sources without the use of expensive special equipment, such as anechoic and reverberant rooms. This opened up new, extremely cost-saving applications in acoustic measurement technology in industry and R&D to determine the sound power of machines, aggregates, equipment and other noise sources directly on site. Important applications are, the identification and ranking of partial sound sources, the determination of the radiated power of vibrating surfaces, the visualization of sound fields or the determination of the transmission losses of partitions, etc. MTG traditionally offers a wide range of selected precision microphone pairs, that are integrated in different mechanical constructions and now, the new SIS 190 double for ½“ or ¼“capsules., The SIS 190 double allows a simultaneous sound intensity measurement in a very large frequency range. Customer Benefit - Measurements without Interruption. Due to its two-channel technology each SIS makes it possible to measure sound pressure levels and to record the sound pressure gradient which are needed to calculate the sound intensity. The SIS 190 double consists of the Measuring Capsules Pairs MK 290 E (2x MK 222E) + MK 390 E (2x MK 301 E) with matched phase response and frequency response. Due to the use of the 1/4” Measuring 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 35Hz and 12kHz. The quality of conformance between the microphone pairs with regard to their transforming functions is measured in compliance with IEC 1043 and documented as Minimum pressure-residual intensity index for probes. Each capsule pair comes with a measuring protocol, what shows the tolerance limits for class 1 probes.