MK 222 E 1/2"
infrasound
measuring microphone capsule
Infrasonic USB measurement microphone MK 222 E + iSV1611
The 1/2” measuring microphone capsule MK 222 E is designed for acoustic measurements in research, development and industry and is also used in building acoustics and audiology, among other things.
- Frequency range 0.5 Hz to 20 kHz
- free field
- Sound pressure level up to 149 dB
- 15 dBA to 149 dB
- pre-polarized
The measurement microphone capsule has a fixed charge carrier layer (backelectret) to provide the polarization voltage.
The careful construction and the constructive concept of the microphone capsules guarantee a high temporal constancy of the electro-acoustic parameters.
The internationally common thread type (60 UNS) for connecting the microphone capsule allows interchangeability with other 1/2” microphone capsules and enables connection to all suitable calibration and measuring devices.
1/2" USB free field
microphone
class 1 WS2F
USB measurement microphone preamplifier infranoise application
The iSV1611 digital USB microphone preamplifier is suitable for all common pre-polarized 1/2” measurement microphone capsules.
The thread type 60 UNS allows the combination of different microphone capsule manufacturers depending on the application.
For infrasonic applications we offer the Microtech Gefell MK 222 E capsule.
Specifications of the
infrasonic microphone capsule
Model | MK 222 E IEC 61094-4 Type WS2 |
|---|---|
Diameter | 1/2″ |
Frequency Range | 0.5 Hz ~ 20 kHz (±2 dB) |
Responce Type | Free field |
Electrode Forming Voltage | 0 V |
Sensitivity (dB re 20 μPa) | 50mV/Pa (±1.5dB) |
Capacitance at 250 Hz | 19 pF |
Maximum Sound Pressure Level | 149 dB |
Intrinsinc Noise Level | 15 dB (A) |
Operating Temperature Range | 10℃～+ 50℃ |
Operating Humidity Range | up to 70 °C, 90 % |
Temperature Characteristics |
< 0.015 dB/°C |
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 vented |
Outer Dimensions | Ф 13.2 mm x 16.2 mm |
Weight | 8.3 gram |
Digital 1/2" USB Microphone Preamplier
Specifications
Model | USB Microphone Preamplifier |
|---|---|
Signal Amplitude ref. 50mV @ 1kHz Frequency Response Frequency Sampling 192 kHz |
1 Hz~20Hz, Error <3.0dB 20 Hz~20kHz, Error<0.3dB 20 kHz~80kHz, Error<3dB |
Electrical signal noise background | Ch.1 (<13dBA, <26dBZ) Ch.2 (<50dBA, <63dBZ) |
THD
Input 1kHz, 50mV, A weighting | <0.1%
|
Overload Indicator 1kHz (THD<3%) | Ch.1 (>101.9dB) Ch.2 (>140dB) |
Amplitude accuracy Input 31.6mV, 1kHz, 90.0dB | Error <0.2dB
|
Dimensions 1/2″ Outer diameter of protector cover | Ф 20 × 165 mm φ 13.2mm |
Weight | <96 g (cable not included) |
Operating Temperature | -20°C ~ + 60°C |
Humidity | 25 %～ 90 %(RH) |
Atmospheric Pressure | 65 kPa～108 kPa |
Connector Type | USB2.0, |
Microphone Thread | 11.7 mm-60 UNS |