New probe microphone gets into the tiniest of spaces

摘要

The new 377B26 probe microphone from PCB Piezotronics has been designed for R&D engineers needing to measure sound pressure in confined spaces. The probe tip diameter measures 1.3mm, which enables white goods, telephone, loudspeaker and musical instrument manufacturers to make measurements in small, confined and difficult-to-access spaces that cannot be accessed using traditional microphones. The microphone comprises four components: pre-polarised microphone, preamplifier, housing and several probe tips of different lengths. The components work together to provide a maximum operating temperature of 800° Centigrade, much greater than traditional test and measurement microphones.