Posted to News on 16th Nov 2015, 15:14
Low-frequency ICP microphone and preamplifier for infrasound
PCB Piezotronics is launching a new ½in (12mm) microphone and preamplifier system, model 378A07, designed for use in low-frequency testing and suitable for studies ranging from wind turbines to natural events like tornadoes.
Low-frequency measurements are commonly required for wind turbines, sonic booms, diesel engines and specialised loudspeaker systems to name a few. Natural events such as tornadoes and earthquakes emit very low-frequency pressure waves which can travel long distances without being blocked. Model 378A07 microphones can detect these low-frequency signatures as potential danger.
This free-field prepolarised microphone has a frequency range of 0.13Hz to 20kHz (+/-2dB) which meets the IEC 61094-4 standard for test and measurement microphones. This covers infrasound, which is below the normal hearing range for adults.
PCB carries a full complement of prepolarised and externally polarised condenser microphones and preamplifiers. Prepolarised microphones use standard coaxial cables and are ICP compliant, allowing power supplies to be shared with other ICP-compliant products such as accelerometers. This interchangeability can result in significant per-channel cost savings as well as reducing test set-up time. The 378A07 microphone is supplied with an A2LA and ILAC accredited initial calibration. Like all PCB products, it comes with a "Total Customer Satisfaction" guarantee.
Please visit www.pcbpiezotronics.co.uk for further information about the new model 378A07 microphone and preamplifier system.
