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IEPE Microphone Water & Dust Resistant

High Sensitivity 1/4" Measurement Microphones IP55 Rated

The MI21 microphone is designed to be splash-proof so that it can be used for measurement campaigns in wet or damp weather. A water-repellent seal on the membrane at the sound inlet prevents the electret capsule from being damaged by water.
 
The IEPE microphones with splash water protection, including MI17SW and RG-50SW, have proven their worth with brake manufacturers, among others, who mount the measurement microphone in the wheel arch in order to record disruptive brake noises.
 
IEPE microphone for all applications in standard industrial environments. Suitable for all noise measurements above 26 dB(A) up to 130 dB.

MI21

Measurement Microphone
Technical data:
Transducer type
Electrete pressure transducer
Class 1
WS3F according to IEC 61094-5
Polar pattern
Omni
Frequency range
20 Hz – 20 kHz (meets Type 1 free field limits)
Sensitivity @ 1 kHz
50 mV/Pa ± 0.5 dB
Max. SPL for
1% THD at 1 kHz
130 dB Peak
Inherent noise
26 dB(A)
Output impedance
<50 Ohm
Current consumption
2-6 mA
Power supply
18 V DC to 30 V DC
Bias:
12.5 Volt
Temperature range, operation
-20°C to +80°C
Heat resistant
up to 110 °C
Diameter
7 mm ± 0.05 mm
Length
83 mm
Weight
19 g
Connector
BNC (fem.)

1/4″ sleeve diameter over the entire length

MI19SW

IP55 Microphone Water resistant microphone dust resistant microphone IEPE microphone

IP55 splash water resistant

The 19SW microphone has been designed to be IP55 splash water resistant.

The microphone is therefore suitable for use in measurement campaigns in wet and damp weather conditions.

An IP55 water-repellent seal on the membrane at the sound inlet prevents potential damage to the electret capsule caused by water.

The IEPE microphone is suitable for use in standard industrial environments and for all noise measurements with a sound pressure level of up to 130 dB.

Calibration is possible with a commercially available microphone calibrator and a 1/2″ to 1/4″ adapter.

The MI19 microphones are equipped with a BNC socket so that standard BNC cables can be used.

A TNC plug version is also available on request.

MR10

Outdoor Measurement Microphone

Weatherproof IEPE Microphone

MR10 is a weatherproof microphone unit consisting of a 1/4″ IEPE measurement microphone MI19SW and the rain protection unit for outdoor use.

It is suitable for continuous use on rainy days or in an environment with very high or very low temperatures.

MR10 uses a WS3F and IEC 61672 Class 1 MI19 microphone, which is characterized by its stability.

It is a favorable choice for long-term outdoor use, e.g. for noise monitoring.

Reference direction of sound incidence 90° to the microphone axis

  • Sensitivity 50 mV/Pa
  • IEPE supply 2-20mA BNC
  • Frequency response: 20 Hz – 20 kHz
  • Class 1 WS3F – DIN IEC 61672
  • Acoustic noise floor 30 dB(A)
  • Measuring range SPL peak 130 dB
  • Temperature range -20 to + 80 °C

Microphone Rain protection Cross-section

Rain cover for microphone

Two MR10 outdoor microphones connected to Plug.n.DAQ Lite in the control cabinet

Plug.n.DAQ Lite is mounted in the switch cabinet on a DIN Rail

Two MR10 systems with MI19SW microphones are installed in the camera bridge area

Two MR10 systems with MI19SW microphones are installed in the camera bridge area