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Measurement Microphone MM 310

The 1/4” Measuring Microphone MM 310 offers facilities for the use of a high-quality prepolarized measuring microphone capsule type MK 301 E on measuring systems with IEPE inputs. Typical applications like array arrangements and covered area measuring procedures, e.g. automotive acoustics, can be taken into account.

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The measuring microphone is connected to the measuring channels via a fixed microdot connector with microdot cables or usual BNC cables via a microdot-BNC adapter. The measuring microphone preamplifier has an integrated memory for microphone identification. Microphone data can be entered and read by the manufacturer/user by using the memory (IEEE P1451.4 TEDS editor).

The microphone holder MH 64 with 1/4” cone shaped adaptor is recommended for mounting. The 1/4” measuring microphone capsule accessories, e.g. windscreen etc., can be used additionally.

The measuring microphone can be calibrated with the Pistonphone type 5002 or other current sound pressure calibrators with an 1/4″ adapter.

Transducer type		Capacitive pressure transducer, acc. WS3F (DIN EN IEC 61094-4)
Sensitivity		3,5 mV/Pa
Sensitivity		-49 dB ±1,5 dB re 1V/Pa
Correction free-field at 1 kHz		0 dB
Random incidence at 1 kHz		0 dB
Principal axis		microphone axis
		5 Hz to 100 kHz (± 2 dB)
Polarization voltage		0 V
Max. SPL for 3% THD at 1 kHz		158 dB
Output voltage		≤ 8,2 Veff
Output impedance		< 100 Ohm
Nom. load impedance		100 kOhm
Current consumption		2 mA to 10 mA, nom. 4 mA
Transducer excitation voltage		UL 24 V DC to 30 V DC
Time for power up		1 min.
Equivalent loudness level DIN EN 60651		36 dBA
Influence of magnetic field 80 A/m, 50 Hz
Influence of vibration 1 m/s²
Operating temperature range ˂± 0,5 dB		-25 °C to +100 °C
Main ambient temperature coefficient		≤ 0,01 dB/K
Main ambient pressure coefficient		1×10-5 dB/Pa
Temperature limits		-50 °C to +100 °C
Humidity limits		r.H. < 100%, absence of condensation
Diameter	with protection grid	6,35 mm ± 0,02 mm
	without protection grid	7,0 mm ± 0,02 mm
Length
Weight
Protection grid thread		6,35 mm 60 UNS
Preamplifier thread		5,7 mm 60 UNS
Plug		Microdot UNF 10-32
Microphone identification memory		256-Bit 1-WireTM EEPROM (DS 2430 AP)