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Measuring Microphone for IEPE Power Supply


Measuring Microphone MI17

Ideal Applications include the measurement of:

Product noise

Environmental noise

Acoustic modes

Sound power

Identical MI17 models





Free Field Class 1

Mic.Type: Electret prepolarised

WS3F according to IEC 61094-5

Mic.Size: 1/4″

Response: Free-field

Frequency response:

20 Hz – 4 kHz: ± 0.5 dB

4 kHz – 20 kHz: ± 1.5 dB

Polar pattern: omnidirectional

Sensitivity 50 mV/Pa

Measuring range 26 dB (A) to 130 dB SPL peak (5% dist.)

Constant current supply 2 – 6 mA

Bias: 12.5 Volt

Temperature range -10 to +80 °C

Heat resistant up to 110 °C

Dimension: ø12 x 93 mm

Connector: BNC female (male, TNC or female on request)

WS-RG-40 Windscreen 40 mm diameter

MI17SW Splash Proof IP55

The MI17SW microphone is designed with splash water protection so that it can be used for measurement campaigns in wet or humid weather.

A water-repellent sealing of the membrane at the sound inlet, prevents the damage of the electret capsule by water.

The IEPE microphones with splash water protection, also MI21 and RG-50SW, have proven themselves, among others, at brake manufacturers, who mount the microphone in the wheel housing to record disturbing brake noises.

MI17 & MI17SW Dimensions

Dimensions of MI17 and RG-50