Posted to News on 26th Mar 2014, 13:33
Surface microphone for R&D testing from PCB Piezotronics
PCB Piezotronics is launching a new surface microphone which was developed for research and test engineers or acoustic consultants taking measurements in spaces where traditional microphones will not fit or outdoor environments and wind tunnels, where the effects of wind noise on measurements is a concern. Designed using computational fluid dynamics (CFD) modelling, the new model is a low-profile microphone and surface mount pad that reduces the impact of undesired air pressure on the microphone during the measurement process.
Model 130B40 is an all-in-one, water and dust resistant prepolarised (0V) unit that runs off ICP power or equivalent constant current power supply and connects via a 10-32 microdot connector. A key feature of the 130B40 microphone is its maximum dynamic range of 142dB at 3 per cent distortion (150dB before clipping). The sensitivity is 8.5mV/Pa with a low noise floor rating of 32dBA. TEDS (Transducer Electronic Data Sheets) v1.0 is an included feature, which enables the test engineer to locate a specific microphone within a large group. TEDS also stores useful calibration and manufacturer data.
Typical applications include sound pressure measurements in space-constrained cavities, environmental testing or Clear Air Turbulence (CAT), tornado research, wind tunnel testing or general sound analysis where wind noise may be an issue. The surface microphone can be used in any flush-mount application and can be embedded into a wall or mounted with adhesive on a flat surface. The height is 3mm, making it a good choice for applications that require the microphone to have a low profile.
Model 130B40 is described as a quality acoustic measurement sensor with a small footprint and a very competitive price. The new surface microphone is in stock and available for immediate shipment. For additional information please visit www.pcb.com/surfacemictest.
