MMS 214
Low noise microphone MMS 214 has a particularly low inherent noise level and is designed for acoustic measurements of low sound pressure levels close to the threshold of human hearing.
The electrical connection is via a BNC cable to devices with IEPE supply.
The microphone preamplifier internally generates the polarization voltage for the externally polarized microphone capsule.
The measurement microphone is equipped with a build-in memory for microphone identification (TEDS acc. IEEE 1451).
- Sensitivity: 320 mV/Pa
- Free-field
- 2 Hz to 20 kHz
- 6.5 dBA to 104 dB
- IEPE (BNC)
- Microphone power supply: IEPE
- Class 1 – WS2F – IEC 61094-4
- TEDS acc IEEE 1451
MMS214 + Plug.n.DAQ Lite
Measuring Range 12 dbA to 100 dBA
Low-noise microphone set consisting of a 2-channel IEPE USB sensor interface and the MMS 214 measuring microphone.
The Plug.n.DAQ Lite USB measurement module is designed for high sensitivity with a measurement range of 12 dbA to 100 dBA.
- Price: 3172 €
- Scope of delivery:
- MMS 214 1/2” Low Noise Measurement Microphone
- Plug.n.DAQ Lite IEPE Sensor USB Interface
MMS214 + ZOOM UAC 232
Measuring range 6.5 dbA to 100 dBA
Low-noise microphone set consisting of a 2-channel IEPE USB sensor interface and the MMS 214 measuring microphone.The USB measurement module ZOOM UAC-232 offers extremely low self-noise of -9 dB in relation to a microphone sensitivity of 320 mV/Pa (Ref. 20 µPa).
- Price: 3537 €
- Scope of delivery:
- MMS 214 1/2” Low Noise Measurement Microphone
- ZOOM UAC 232
In today’s demonstration, we will illustrate the process of conducting calibrated acoustic measurements with the MMS 214 High Sensitivity Measurement Microphone, the Plug.n.DAQ Lite, and DASYLab.
To achieve optimal precision, we utilize a class 1 microphone calibrator 4010.
Transducer type | Capacitive pressure transducer |
|---|---|
Frequency range of the free field response | ±2 dB 2.5 Hz to 16 kHz ±3 dB 2.0 Hz to 20 kHz |
Sensitivity | 320 mV/Pa |
Sensitivity re 1 V/Pa | -10 dB ± 2.5 dB |
Max. SPL for 3% THD at 1 kHz | Peak, 20 Hz to 5 kHz 116 dB Peak, 20 Hz to 20 kHz 104 dB RMS, 20 Hz to 5 kHz 113 dB RMS, 20 Hz to 20 kHz 101 dB |
Inherent noise | 6.5 dBA |
Output impedance | <100 Ohm |
Current consumption | 4 mA to 20 mA |
Power supply voltage | 24 V DC to 30 V DC |
Temperature range, operation | -20 °C bis +60 °C |
Temperature range, storage | -40 °C to +80 °C |
Temperature coefficient at 250 Hz | ≤0.01 dB/K |
Static pressure coefficient at 250 Hz | -0.00001 dB/Pa |
Temperature limits | -50 °C to +100 °C |
Humidity limits | r.H. <100%, absence of condensation |
Diameter | without protection grid 12.7 mm ± 0.05 mm with protection grid 13.2 mm ± 0.05 mm |
Length | 135 mm |
Weight | 250 g |
Plug | BNC |
Microphone identification memory | 256-Bit 1-WireTM EEPROM (DS 2430 AP) |
