ROGA Instruments
Infrasound USB Microphone
Infrasound USB MicrophoneInfrasound USB Microphone
Infrasound USB MicrophoneInfrasound USB Microphone
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.
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 |
Ultrasonic USB measurement microphone
Ultrasonic USB measurement microphoneUltrasonic USB measurement microphone
Ultrasonic USB measurement microphoneUltrasonic 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 |