New 1/2” Low Frequency Microphone for Infrasound Measurements from PCB Piezotronics

June 1 2015, 03:00
PCB Piezotronics introduced the new 1/2” microphone and preamplifier system, model 378A07, which is able to measure a range of low frequencies extending below the human audible range. The new solution from PCB Piezotronics, aids in low frequency testing, ideal 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 specialized 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 prepolarized microphone has a frequency range of 0.13 Hz to 20 kHz (+/- 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 prepolarized and externally polarized condenser microphones and preamplifiers. Prepolarized 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 a significant per-channel cost savings as well as reduce test set-up time. The 378A07 microphone is A2LA and ILAC accredited. 
Microphone model 378A07 is in stock and available for immediate shipment. Like all PCB products, it comes with a “Total Customer Satisfaction” guarantee.
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