UTP microphones

The GRAS UTP microphones - Ultra Thin Precision microphones - unite the advantages of the classical measurement microphone with an ultra-small form factor. They combine wide frequency and dynamic range with accuracy and repeatability. They are designed for easy mounting and fast in-situ verification. The LX-versions have TEDS.

They are available as single sensors that are only 1 mm in height, and as line-arrays with 4 or 8 microphones, only 1.35 mm in height. Therefore, they are ideal for measurements in boundary layers and turbulence. The single sensor versions are also ideal for confined spaces and small cavities.

GRAS 48LA UTP Microphone, High Pressure

Freq range:  20 Hz to 20 kHz (±1 dB)
                       16 Hz to 31.5 kHz (±3 dB)
Dyn range: 64 dB(A) to 184 dB
Sensitivity: 0.12 mV/Pa (±2 dB)
Use: For aeroacoustic measurements

GRAS 48LA UTP Microphone, High Pressure

48LA is an Ultra-Thin Precision (UTP) surface microphone for aeroacoustic testing. It is a low-profile 1/4" CCP high-pressure condenser microphone. The microphone is only 1 mm high and can, therefore, be mounted in air-flow without disturbing the sound field...

GRAS 48LX-1 UTP Microphone, Medium Pressure

Freq range: 20 Hz to 40 kHz (±1 dB)
                      10 Hz to 70 kHz (±3 dB)
Dyn range: 54 dB(A) to 170 dB
Sensitivity: 0.6 mV/Pa (±3 dB)
Use: For aeroacoustic measurements

GRAS 48LX-1 UTP Microphone, Medium Pressure

48LX-1 is an Ultra-Thin Precision (UTP) surface microphone for aeroacoustic testing. It is a low-profile 1/4" CCP medium-pressure condenser microphone. The microphone is only 1 mm high and can, therefore, be mounted in air-flow without disturbing the sound field.  ..

GRAS 48LX-4 UTP Line-Array, 4 Channel, Medium Pressure

Freq range: 20 Hz to 20 kHz (±1 dB)
                      10 Hz to 70 kHz  (±3 dB)
Dyn range: 54 dB(A) to 170 dB
Sensitivity: 0.6 mV/Pa (±3 dB)
Channels: 4
Use: For aeroacoustic measurements

GRAS 48LX-4 UTP Line-Array, 4 Channel, Medium Pressure

48LX-4 is an Ultra-Thin Precision (UTP) surface microphone line-array for aeroacoustic testing. It consists of four low-profile 1/4" CCP medium-pressure condenser microphones. They are mounted with rubber fairings in a line array configuration on a flexible PCB. 48LX-4 is only 1.35 mm high and can, ..

GRAS 48LX-8 UTP Line-Array, 8 Channel, Medium Pressure

Freq range: 20 Hz to 20 kHz (±1 dB)
                      10 Hz to 70 kHz  (±3 dB)
Dyn range: 54 dB(A) to 170 dB
Sensitivity: 0.6 mV/Pa (±3 dB)
Use: For aeroacoustic measurements

GRAS 48LX-8 UTP Line-Array, 8 Channel, Medium Pressure

48LX-8 is an Ultra-Thin Precision (UTP) surface microphone line array for wind tunnel testing. It consists of 8 low-profile 1/4" CCP medium-pressure condenser microphones. They are mounted with rubber fairings in a line array configuration on a flexible PCB. 48LX-8 is only 1.35 mm high and can, ther..