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Measurement microphone MM 210

The 1/2 ”measuring microphone MM 210 opens up the possibility of using a high quality, pre-polarized measuring microphone capsule MK 250 on measuring systems with IEPE supply. Array arrangements and envelope surface measurement methods, for example in motor vehicle acoustics, come into consideration as typical applications.



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The electrical connection is made via the permanently attached BNC connector with standard BNC cables. The preamplifier is equipped with built-in memory for microphone identification, with which microphone data can be written and read by the manufacturer/user (IEEE P1451.4 TEDS editor).

We recommend the MH 64 microphone holder with a 1/2 ”clamp to hold the microphone. The use of the 1/2 ”measuring microphone capsule accessories such as windshield, nose cone, dry adapter etc. is possible without any problems.

The measurement microphone can be calibrated with the Pistonfon Type 5002 or with other suitable sound pressure calibrators.

Converter typeCapacitive pressure receiver, according to WS2F (DIN EN IEC 61094-4)
Operating transfer coefficient50 mV / Pa
Operational transmission rate-26 dB ± 1.5 dB re 1V / Pa
Free field correction for 1 kHz0 dB
Diffuse field correction for 1 kHz0 dB
Reference directionMicrophone axis
Frequency range of the free field transmission factor3.5 Hz … 20 kHz, class 1 DIN EN 60 651
Polarization voltage0 V
Limit sound pressure level for 3% harmonic distortion at 1 kHz135 dB
Limit sound pressure levelwith reduced no-load supply voltage (UL = 18 V DC)130 dB
Output voltage≤ 6.5 Veff
Output impedance<100 ohms
Nominal terminating impedance100 kOhm
Operating current2 mA to 10 mA, nom. 4 mA
Recommended open circuit voltage of the power supply unitUL 24 V DC to 30 V DC
Start-up time1 min.
Equivalent noise level DIN EN 6065115 dBA
Magnetic field influence 80 A / m, 50 Hz<22 dB
Influence of mechanical vibrations 1 m / s²60 dB (20 Hz to 1 kHz)
Working temperature range ˂ ± 0.5 dB-25 ° C to +100 ° C
Temperature coefficient≤ 0.01 dB / K
Static pressure coefficient1×10-5 dB / Pa
Temperature limits-50 ° C to +100 ° C
Moisture limitsrH <100%, condensation not allowed
diameterwith protective cap13.2 + 0.05 mm
without protective cap12.7 + 0.05 mm
length97 mm (including connector)
Weight45 g
Thread for preamplifier11.7mm 60 US
Thread for protective cap12.7mm 60 US
Memory for microphone identification256-bit 1-WireTM EEPROM (DS 2430 AP)


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