- Small, lightweight MEMS design
- Absolute EMI/RFI immunity
- Completely passive sensor with no metal or electrical parts
- Linear response up to 140 dB SPL
- Extended frequency response
- High reliability and environmental stability
- Optical fiber connection over extended lengths without signal loss
- Exceptionally low sensitivity to vibration
- Cost-effective, long-term solution
Miniature fiber optic microphone for indoor acoustic monitoring of signals with sound pressure levels (SPL) as high as 140 dB. Ideal where the microphone placement is severely limited or where the microphone is a sub-component in another device or system.
The SOM(3) SPL system comprises of an advanced fiber optic microphone & single-channel electro-optic unit (EOU100), for digital-to-analog conversion of optical microphone output signals. The Single Channel EOU 100 is extremely compact. It features a pair of ST- style fiber optic connectors; a 3.5 mm socket for analog output & green LED voltage indicator. Unit is powered by external DC power supply.
The SOM(3) SPL is supplied as standard with clear 1mm PVC fiber-optic cable. Where there is no benefit in the thin, transparent 1mm PVC cable, we recommend the more robust Kevlar reinforced black 3mm PVC cable.
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- MRI earmuff noise measurement
- fMRI headphone calibration
- Industrial and noisy environments
- Highly explosive areas
- High RF areas
- Severe electromagnetic fields
- Aerospace measurements
