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Ultrasound Microphone 5 Hz to 100 kHz

Ultrasonic Microphone Set
MK301 E + A67 + MP30

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 4 mV/ Pa
  • IEPE 4 – 20 mA / 18V – 30V
  • free field
  • Sound pressure level up to 158 dB
  • 35dBA to 158dB
  • pre-polarized 

The measuring microphone capsule MK 301 is suitable for class 1 sound level meters according to IEC 61672.

MK 301 E
1/4" measuring microphone capsule

Model
WS3F according to IEC 61094-4
Diameter
1/4″
Frequency Range
5 Hz … 100 kHz (± 2 dB)
Responce Type
Capacitive pressure transducer
Electrode Forming Voltage
0 V
Sensitivity (dB re 20 μPa)
4 mV/Pa (± 3 dB)
Capacitance at 1 kHz
4.5 pF
Max. SPL for THD
≤ 3 % at 1 kHz
158 dB peak
Intrinsinc Noise Level
36 dB (A)
Operating Temperature Range
-20 °C ~ +100 °C
Operating Humidity Range
25 % ~ 90 %(RH)
Storage Humidity Range
25 % ~ 90 %(RH)
Venting
Rear
Outer Dimensions
with protection grid
Ф 7 mm x 9.7 mm
± 0,02 mm
Weight
2 gram

MP30 Microphone Preamplier
Specifications

Model
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
-0.1 dB
Intrinsic Noise
(20Hz ~ 20kHz)
<5 μV A-weighting
Distortion(THD) @1kHz 1 V
<0.1%
Output Impedance
<50Ω
Max. Output Voltage
5 V RMS
IEPE Power Voltage
18 V ~ 30 V
IEPE Current
2 mA ~ 20 mA
Polarization Voltage
0 V
Dimensions
Ф12.7mm × 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
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