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11 new products for your test and measurement needs

02 Oct 2015  | Martin Rowe

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377A06 free-field microphone, PCB Piezotronics

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The Model 377A06 &frec122;-in. free-field microphone from PCB Piezotronics provides an accurate (flat) response for measuring frequencies up to 40kHz. With a sensitivity of 12.5mV/Pa, the 377A06 avoids an overload that can be experienced when a standard high-sensitivity (50mV/Pa) microphone measures over 136dB or above 20kHz. According to the manufacturer, the 377A06 is a cost-effective alternative to a &fred14;-in. microphone and preamplifier combination, and it has lower inherent noise.

The high-amplitude, high-frequency microphone can be used for such applications as environmental monitoring, railway testing for horns above 140dB, and sonic boom measurements. In addition to being able to measure to 40kHz (3dB), the Model 377A06 provides a 3 per cent distortion rating to 160dB and maintains a 21dBa noise floor.

PCB Piezotronics' prepolarised microphones use standard coaxial cables and are ICP-compatible, allowing power supplies to be shared with other ICP-compatible products, such as accelerometers, pressure sensors and force sensors. The Model 377A06 costs $750 and is available from stock.

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