Free-field | Class 1 acc. to 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.) |
Scope of delivery:
- MI19 IEPE Microphone
- MI-MH Microphone Holder
- WS-RG-40 Wind Shield
- RogaBNC2 BNC to BNC Sensor Cable 2 Meter
MP30 Series
IEPE microphone set MP30 consisting of a ½” microphone capsule with preamplifier can be connected to all measuring devices with IEPE sensor supply.
MP30 is a class 1 measurement microphone according to the WS2F frequency response industry standard.
The low noise floor of less than 16 dB(A) and the linear frequency response of 4 Hz to 20 kHz is ideally suited for almost any precision measurement.
MP30 Set
- Price: 854 $
½” Free Field Microphone
- Class 1 and WS2F according to IEC 61094-4
- Sensitivity 40mV/Pa
- IEPE constant current supply 2-20 mA | Bias: 12.5 Volt
- Polar Pattern: Omnidirectional
- Frequency Response: 4 Hz – 20 kHz
- Acoustic noise floor 16 dB A-weighted
- Measuring range 16 dB(A) to SPL Peak (3% Dist.) 135 dB
Scope of delivery:
- ½” microphone capsule pre-polarized
- ½” IEPE microphone preamplifier
MP30 Microphone Capsule | IEC 61094-4 Type WS2F |
|---|---|
Diameter | 1/2″ |
Frequency Range | 4 Hz ~ 10 Hz ± 1.5 dB 10 Hz ~ 4 kHz ± 0.5 dB 4 kHz ~ 20 kHz ± 2.5 dB |
Responce Type | Free field |
Electrode Forming Voltage | 0 V |
Sensitivity (dB re 20 μPa) | 40 mV/Pa (± 1.5 dB) |
Capacitance at 250 Hz | 18 pF |
SPL Max. at 250 Hz Distortion <3% | 135 dB |
Intrinsinc Noise Level | 16 dB (A) |
Operating Temperature Range | -20 °C ～ +60 °C |
Operating Humidity Range | 25 % ～ 90 %(RH) |
Temperature Characteristics | 0.01 dB/C° Maximum |
Humidity Characteristics | 0.001 %(RH) |
Aging Drift | 0.2 dB/Year |
Storage Temperature Range | -20 °C ～ +60 °C |
Storage Humidity Range | 25 % ～ 90 %(RH) |
Venting | Rear |
Outer Dimensions | Ф 13.2 mm x 16.0 mm |
Weight | 8.3 gram |
MP30 | Preamplifier |
|---|---|
Frequency Response
(re. 250 Hz) | 0.1 Hz ~ 10 Hz ± 3 dB 10 Hz ~ 20 kHz ± 0.1 dB 10 Hz ~ 200 kHz ± 0.2 dB |
Gain | 0.04 dB |
Intrinsic Noise (20Hz ~ 20kHz) | < 5 μV A-weighting |
Distortion (THD) @1kHz
1 V | < 0.1% |
Output Impedance | ＜50Ω |
Max. Output Voltage | 6.5 Volt RMS @ 21 Volt IEPE DC Offset |
IEPE Power Voltage | 18 V ~ 30 V | Bias : 12.5 Volt |
IEPE Current | 2 mA ~ 20 mA |
Polarization Voltage | 0 V |
Dimensions | Ф 12.7mm × 70 mm |
Weight | < 20 g (cable not included) |
Operating Temperature | – 20°C ~ + 60°C |
Humidity | 25 %～ 90 %(RH) |
Atmospheric Pressure | 65 kPa～108 kPa |
Connector Type | BNC |
Thread for Microphone Capsule Mounting | 11.7 mm-60 UNS |
MP30-50 Set
- Price: 954 $
Class 1 ½” Free Field Microphone
- Class 1 and WS2F according to IEC 61094-4
- Sensitivity 50 mV/Pa
- IEPE constant current supply 2-20 mA | Bias: 12.5 Volt
- Polar Pattern: Omnidirectional
- Frequency Response: 4 Hz – 20 kHz
- Acoustic noise floor 16 dB A-weighted
- Measuring range 16 dB(A) to SPL Peak (3% Dist.) 135 dB
Scope of delivery:
- ½” microphone capsule pre-polarized
- ½” IEPE microphone preamplifier
MP30-50 Microphone Capsule | IEC 61094-4 Type WS2F |
|---|---|
Diameter | 1/2″ |
Frequency Range | 4 Hz ~ 10 Hz ± 1.5 dB 10 Hz ~ 4 kHz ± 0.5 dB 4 kHz ~ 20 kHz ± 2.5 dB |
Responce Type | Free field |
Electrode Forming Voltage | 0 V |
Sensitivity (dB re 20 μPa) | 50 mV/Pa (± 1.5 dB) |
Capacitance at 250 Hz | 18 pF |
SPL Max. at 250 Hz Distortion <3% | 135 dB |
Intrinsinc Noise Level | 16 dB (A) |
Operating Temperature Range | -20 °C ～ +60 °C |
Operating Humidity Range | 25 % ～ 90 %(RH) |
Temperature Characteristics | 0.01 dB/C° Maximum |
Humidity Characteristics | 0.001 %(RH) |
Aging Drift | 0.2 dB/Year |
Storage Temperature Range | -20 °C ～ +60 °C |
Storage Humidity Range | 25 % ～ 90 %(RH) |
Venting | Rear |
Outer Dimensions | Ф 13.2 mm x 16.0 mm |
Weight | 8.3 gram |
MP30 | Preamplifier |
|---|---|
Frequency Response
(re. 250 Hz) | 0.1 Hz ~ 10 Hz ± 3 dB 10 Hz ~ 20 kHz ± 0.1 dB 10 Hz ~ 200 kHz ± 0.2 dB |
Gain | 0.04 dB |
Intrinsic Noise (20Hz ~ 20kHz) | < 5 μV A-weighting |
Distortion (THD) @1kHz
1 V | < 0.1% |
Output Impedance | ＜50Ω |
Max. Output Voltage | 6.5 Volt RMS @ 21 Volt IEPE DC Offset |
IEPE Power Voltage | 18 V ~ 30 V | Bias : 12.5 Volt |
IEPE Current | 2 mA ~ 20 mA |
Polarization Voltage | 0 V |
Dimensions | Ф 12.7mm × 70 mm |
Weight | < 20 g (cable not included) |
Operating Temperature | – 20°C ~ + 60°C |
Humidity | 25 %～ 90 %(RH) |
Atmospheric Pressure | 65 kPa～108 kPa |
Connector Type | BNC |
Thread for Microphone Capsule Mounting | 11.7 mm-60 UNS |
Class 1 – WS2F – DIN IEC 61094-4
The 1/2″ measurement microphone MP30-Infra makes it possible to use a high-quality, pre-polarized measurement microphone capsule MK 222 E on measurement systems with IEPE supply. Typical applications include low-frequency measurements.
The MP30 preamplifier is designed with a frequency response of 0.1 Hz to 200 kHz and can be fitted with a microphone capsule suitable for the application.
The MI-MKAL microphone holder is recommended for mounting the microphone. The use of 1/2″ measuring microphone capsule accessories, such as windscreens etc., is possible without any problems.
The measuring microphone can be calibrated with the sound calibrator 4010, CA 111 or with other suitable sound pressure calibrators.
- Sensitivity 50 mv/Pa
- IEPE constant current supply 2-20 mA
- Directional characteristic: omnidirectional
- Frequency response: 0.5 Hz – 20 kHz (± 2 dB)
- 0.5 Hz – 3.5 Hz: ± 2 dB
- 3.5 Hz – 4 kHz: ± 0.5 dB
- 4 kHz – 20 kHz: ± 2 dB
- Acoustic noise floor 15 dB A-weighted
- Measuring range 15 dB(A) to SPL peak (5% dist.) 135 dB
MP30-Ultra
Ultrasound Microphone Set
The 1/4” measuring microphone capsule MK 301 E is designed for acoustic measurements in research, development and industry and is also used in building acoustics and audiometry, among other things.
- WS3F according to IEC 61094-4
- Frequency response 5 Hz to 100 kHz with MP30 microphone amplifier
- Sensitivity 3,5 mV/ Pa
- IEPE Constant Current Power 4 – 20 mA / 18V – 30V
- Free Field
- Sound pressure level up to 168 dB
- Range 35dBA to 168dB
- Pre-polarized
The measuring microphone capsule MK 301 is suitable for class 1 sound level meters according to IEC 61672.
- Price: 1852 $
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:
