Flush-mount Microphone Set 1/8″ GRAS 47DX (10Hz-100kHz)

Introduction

• As the only 100% focused developer and manufacturer of measurement microphones, our goal is to provide you with the right sensor for the right application. Whether this is realized through a standard, special or customized sensor solution, our concern and priority is always to help you achieve the best possible measurement results – every time.
• The 47DX 1/8” Flush-mount Microphone Set is the newest member of our range of low profile CCP microphone sets. With a height to the diaphragm of only 9 mm and a housing with a diameter of only 12 mm you can use the 47DX in applications with size constraints.
• The 47DX has a prepolarized pressure microphone with a wide dynamic and frequency range. The built-in preamplifier is a low-noise constant current power (CCP) type  with a built-in TEDS circuit for automatic transducer identification. The set has an integrated 1.5 m cable (customized length optional) with Microdot connector and BNC adapter.
• It is based on the IEC 61094 standard for measurement microphones.

Applications and use

• The 47DX’s low profile makes it ideal for flush mounting in confined spaces, for example in clay models and scale models for wind tunnel tests.
• Its wide frequency range and low sensitivity makes it ideal for high-level impulsive noise measurements and for investigation of air flow and turbulence in scale models or in full scale testing.

System verification

• For proper sensitivity calibration, we recommend using a pistonphone like GRAS 42AP Intelligent Pistonphone.

Quality and warranty

• All GRAS microphone sets are made of high-quality materials that will ensure life-long stability and robustness. The microphone sets are all assembled in verified clean-room environments by skilled and dedicated operators with many years of expertise in this field. The microphone diaphragm, body, and improved protection grid are made of high-grade stainless steel, which makes the microphone resistant to physical damage, as well as corrosion caused by aggressive air or gasses. This, combined with the reinforced gold-plated microphone terminal which guarantees a highly reliable connection, enables GRAS to offer 5 years warranty against defective materials and workmanship.