The calibrated MI19 microphone is suitable for all measurements in technical acoustics, for example for recording machine noise, sound measurements on test benches, use in impedance tubes, sound tests and use as an acoustic camera.
The IEPE microphones MI15, MI17, MI19, RG-50 and MI21 belong to the category of free-field microphones with integrated electronics and are frequently used in scientific research.
Of course, these microphones can also be supplied with tight tolerances of ±0.5 dB. The transmission factors are between 14 mV/Pa and 100 mV/Pa.
Coaxial cables are used as feed lines and the standard microphone configuration includes BNC connectors, which are also optionally available as TNC variants. The microphone can be used with any device that has an IEPE standard compatible supply.
MI19SW
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Price: 455 $
38 $ Shipping Price - MI19SW Datasheet
- MI19 - MI21 STP - DWG - PDF Technical Drawing
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.
Class 1 | in accordance with IEC 61672 |
|---|---|
Transducer type | Electrete pressure transducer |
Diameter | 1/4″ |
Polar pattern | Omni |
Frequency range | 20 Hz – 20 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 | 2-6 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.) |
In the following, I would like to present the self-noise of four microphone models, including two 1/2‘ microphones and two 1/4’ microphones.
Following microphones were used for the measurements:
Model | Description | Price |
|---|---|---|
 | ROGA Instruments products are free from planned obsolescence, technically accessible, durable and repairable. | |
POM-MI1921 | MI19 and MI21 microphone sleeve adapter from 1/4″ inner diameter to 1/2″ outer diameter. POM material to ensure galvanic isolation to prevent ground and earth loops | 24 $ |
POM-MI17RG50 | MI17 and RG-50 microphone sleeve adapter to 1/2″ outer diameter. POM material to ensure galvanic isolation to prevent ground and ground loops | 24 $ |
MicCAL | Microphone Calibration Fee for ROGA Instruments microphones MI15 | MI17 | MI18 | MI19 | MI21| RG-50 | MP30| MP40 After successful factory calibration, the microphone is returned to the customer with our factory calibration certificate. | 155 $ |
MicREP | Microphone Repair Fee for ROGA Instruments microphones MI15 | MI17 | MI18 | MI19 | MI21| RG-50 After successful repair and factory calibration, the microphone is returned to the customer with our factory calibration certificate. | 225 $ |
WS-RG-40 | 1/4″ microphone windscreen Ø 40 mm | 38 $ |
MI19 | MI19; ¼” electret microphone for industrial applications Sensitivity 50 mV/Pa Constant current supply 2-8 mA BNC connector Polar pattern: omnidirectional Class 1 frequency response in accordance with IEC 61672 20 Hz – 20 kHz calibration sheet included Sensitivity & Frequency Response Inherent noise 27 dBA SPL Max 130 dB HS Code 85181000 | 385 $ |
MI19SW | IP55 splash water resistant ¼” electret microphone for industrial applications Sensitivity 50 mV/Pa Constant current supply 2-8 mA BNC connector Polar pattern: omnidirectional Class 1 frequency response in accordance with IEC 61672 20 Hz – 20 kHz calibration sheet included Sensitivity & Frequency Response Inherent noise 27 dBA SPL Max 130 dB HS Code 85181000 | 455 $ |
RG-50HL | High SPL Microphone e.g. shooting noise WS3F Free-field IEC 61094-5 Total length: 95 mm Sensitivity 10 mV/Pa constant current Supply 2-20 mA BNC connection Polar pattern: omnidirectional Frequency response: 5 Hz – 4 kHz: ± 1 dB 4 kHz – 30 kHz: ± 1.5 dB factory calibration certificate included measuring range up to SPL 144 dBRMS / 150 dB peak HS Code 85181000 | 1275 $ |
MK342 E + MV310 Set | 1/4″ microphone with constant pressure frequency response WS3P according to IEC 61094-4 Pressure 3.5Hz to 70kHz 60dB(A) to 186dB pre-polarized HS Code 85181000 | 1480 $ |
MI21 | MI21; ¼” electret condenser microphone Splash Water Proof IP55 Sensitivity 50 mV/Pa / ± 1.0 dB CCP IEPE supply 2-6 mA BNC connector Polar pattern: omnidirectional Frequency response IEC 61094-5 20 Hz – 4 kHz: ± 0.5 dB 4 kHz – 20 kHz: ± 1.5 dB corresponds to class 1 Calibration sheet included Sensitivity & Frequency Response Inherent noise 26 dB(A) SPL Max 130 dB HS Code 85181000 | 588 $ |
MI17 | MI17; 1/4″ IEPE microphone, Sensitivity 50 mV/Pa, constant current supply 2-8 mA BNC connection Frequency response: Class 1 – IEC 61094-5 20 Hz – 4 kHz: ± 0.5 dB 4 kHz – 20 kHz: ± 1.5 dB free field, corresponds to class 1 including individual Calibration sheet (sensitivity & frequency response) Inherent Noise 26 dB (A) Download MI17 PDF HS Code 85181000 | 543 $
|
MI17SW | MI 17SW; 1/4″ IEPE microphone Splash Water Proof IP55 Sensitivity 50 mV/Pa, constant current supply 2-8 mA BNC connection Frequency response: 20 Hz – 4 kHz: ± 0.5 dB 4 kHz – 20 kHz: ± 1.5 dB free field, corresponds to class 1 IEC 61094-5 including individual Calibration sheet (sensitivity & frequency response) Inherent Noise 26 dB (A) HS Code 85181000 | 588 $
|
RG-50 | RG-50; 1/4″ IEPE free field microphone Sensitivity 50 mV/Pa constant current supply 2- 20mA BNC connection Frequency response 5 Hz – 4 kHz: ± 0.5 dB 4 kHz – 30 kHz: ± 1.5 dB free field, corresponds to class 1 IEC 61094-5 including individual Calibration sheet (sensitivity & frequency response) Inherent Noise 26 dB (A) HS Code 85181000 | 543 $ |
RG-50SW | RG-50SW; 1/4″ IEPE Free-field microphone Sensitivity 50 mV / Pa constant current supply 2- 20mA BNC connection Splash Water Proof IP55 Frequency response 5 Hz – 4 kHz: ± 0.5 dB 4 kHz – 30 kHz: ± 1.5 dB free field, corresponds to class 1 IEC 61094-5 including individual Calibration sheet (sensitivity & frequency response) Inherent Noise 26 dB (A) HS Code 85181000 | 588 $ |
