Product Details
Ultrasonic USB measurement microphone
Ultrasonic USB measurement microphone
Ultrasonic USB measurement microphone MK 301 E + A67 + iSV1611
The 1/4” measuring microphone cartridge MK 301 E is designed for acoustical measurements in research and development and also for industrial use. Some applications include audiology, the measurement of building acoustics and noise levels.
The microphone cartridge has a fixed layer of backelectret to supply the polarization voltage.
It is designed and very carefully constructed to ensure excellent long-time stability of the electroacoustical parameters. All essential components including the diaphragm are made of nickel and the diaphragm is bonded by a special galvanic process. The rear electrode is insulated from the cartridge housing by a quartz glass plate. The diaphragm is protected against mechanical damage by a protection grid. The equalization of the static air pressure between the inside and outside of the cartridge is by means of a capillary tube rear-vented into the preamplifier.
The cartridge uses the international standard thread 60 UNS which ensures compatibility with a wide range of calibration equipment and measurement devices available from many manufactures.
The measuring microphone cartridge MK 301 is designed for sound level meters of IEC Type 1 according to IEC 61672.
- WS3F acc IEC 61094-4
- Frequency range 5 Hz to 80 kHz with iSV1611 USB Mic. Amp
- free field
- Sound pressure level up to 168 dB
- 35dBA to 168dB
- pre-polarized
USB measurement microphone preamplifier ultrasonic 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 ultrasonic applications we offer the MK 202 E from Microtech Gefell GmbH.
Specifications of the ultrasonic microphone capsule:
| Model | MK 202 E |
| Diameter | 1/2″ |
| Frequency Range | 10 ~ 40 kHz (- 3 dB) |
| Responce Type | Free field |
| Electrode Forming Voltage | 0 V |
| Sensitivity (dB re 20 μPa) | 14mV/Pa (±3dB) |
| Capacitance at 250 Hz | 18 pF |
| Maximum Sound Pressure Level | 158 dB |
| Intrinsinc Noise Level | 22 dB (A) |
| Operating Temperature Range | -50℃～+100℃ |
| Operating Humidity Range | up to 70 °C, 90 % |
| Temperature Characteristics | <0.01dB/K |
| 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 14.2 mm |
| Weight | 8.5 gram |
Description
Digital 1/2″ USB Microphone Preamplier Specifications:
| Model | USB Microphone Preamplifier |
| Signal Amplitude ref. 50mV @ 1kHz Frequency Response Frequency Sampling 192 kHz |
1Hz~20Hz, Error <3.0dB 20Hz~20kHz, Error<0.3dB 20kHz~80kHz, Error<3.0dB |
| 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 |
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