The calibrated MI19 microphone is suitable for all technical acoustic measurements, such as recording machine noise, sound measurements on test benches, in production, end-of-line testing, use in impedance tubes, noise measurements, and use as an acoustic camera.
The IEPE microphones MI19 and MI19SW belong to the category of free-field microphones with integrated electronics and are widely used in industrial acoustics and scientific research.
The MI19SW version is splash-proof according to IP55 and is suitable for temporary outdoor use. Coaxial cables are used for connection, and the microphone is equipped with BNC connectors as standard; TNC versions are also available. The microphone can be used with any device that has a power supply compatible with the IEPE standard.
Class 1 free-field | in accordance with IEC 61672 |
|---|---|
Transducer type | Capacitive pressure transducer |
Diameter | 1/4″ |
Polar pattern | Omni |
Frequency range | 20 Hz – 20 kHz |
Sensitivity @ 1 kHz | 12 mV/Pa |
Max. SPL for 1% THD at 1 kHz | 146 dB Peak |
Inherent noise | 39 dB(A) |
Output impedance | <50 Ohm |
Current consumption | 2-20 mA |
Power supply | 18 V DC to 30 V DC |
Bias: | 12.5 Volt |
Temperature range, operation | -20°C to +150°C |
Heat resistant | up to 180 °C |
Diameter | 7 mm ± 0.05 mm |
Length | 84 mm 1/4″ sleeve diameter over the entire length |
Weight | 18.6 g |
Connector | BNC (fem.) |
Class 1 free-field | in accordance with IEC 61672 |
|---|---|
Transducer type | Electrete pressure transducer |
Diameter | 1/4″ |
Polar pattern | Omni |
Frequency range | 20 Hz – 30 kHz |
Sensitivity @ 1 kHz | 50 mV/Pa ± 0.5 dB |
Max. SPL for 1% THD at 1 kHz | 130 dB Peak |
Inherent noise | 30 dB(A) |
Output impedance | <50 Ohm |
Current consumption | 2 – 20 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 1/4″ sleeve diameter over the entire length |
Weight | 19 g |
Connector | BNC (fem.) |
MI19SW
The SW version has a dust- and water-repellent stainless steel acoustic mesh at the sound inlet, which is resistant to dust particles larger than 20 µm.
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.
MI19-HS
Class 1 free-field | in accordance with IEC 61672 |
|---|---|
Transducer type | Electrete pressure transducer |
Diameter | 1/4″ |
Polar pattern | Omni |
Frequency range | 20 Hz – 30 kHz |
Sensitivity @ 1 kHz | 100 mV/Pa ± 1 dB |
Max. SPL for 1% THD at 1 kHz | 130 dB Peak |
Inherent noise | 22 dB(A) |
Output impedance | <50 Ohm |
Current consumption | 2 – 20 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 1/4″ sleeve diameter over the entire length |
Weight | 19 g |
Connector | BNC (fem.) |
serves as a dust, water and EMC barrier.
Class 1 free-field | in accordance with IEC 61672 |
|---|---|
Transducer type | Electrete pressure transducer |
Diameter | 1/4″ |
Polar pattern | Omni |
Frequency range | 20 Hz – 30 kHz |
Sensitivity @ 1 kHz | 100 mV/Pa ± 1 dB |
Max. SPL for 1% THD at 1 kHz | 130 dB Peak |
Inherent noise | 22 dB(A) |
Output impedance | <50 Ohm |
Current consumption | 2 – 20 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 1/4″ sleeve diameter over the entire length |
Weight | 19 g |
Connector | BNC (fem.) |
Class 1 free-field | in accordance with IEC 61672 |
|---|---|
Transducer type | Capacitive pressure transducer |
Diameter | 1/4″ |
Polar pattern | Omni |
Frequency range | 20 Hz – 30 kHz |
Sensitivity @ 1 kHz | 0.35 mV/Pa ± 0.5 dB |
Max. SPL for 1% THD at 1 kHz | 179 dB(C) Peak |
Inherent noise | 54 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 1/4″ sleeve diameter over the entire length |
Weight | 19 g |
Connector | BNC (fem.) |
