We offer complete solutions from microphones to analysing and monitoring acoustic signals for industry, research and development.
We measure sound levels below 6.5 dBA, which are designed for measuring very quiet sound sources.
Noises with sound levels above 186 dB, such as those generated by rocket engines or firearms, can be measured without distortion using our 1/4″ microphones.
Our class 1 microphones are calibrated and traceable to national and international standards to ensure consistent and precise measurement results.
Sound level meters for extremely loud noises up to 186 dB as well as multi-channel data acquisition systems, e.g. for sound power measurement, and impedance tube systems round off our range.
10 volt measuring range, sound pressure level and microphone sensitivity.
A typical 1/2″ measuring microphone delivers a voltage of 50 mV at 1 Pascal.
1 Pascal corresponds to 94 dB sound pressure level. 94 dB is already very unpleasant for humans and is only tolerated in rare situations.
In a normal conversation, the sound pressure level is below 74 dB, i.e. 20 dB lower. 20 dB quieter is a factor of 10 quieter.
This means that at 74 dB, the microphone only delivers 5 mV.
Assuming that parts are acoustically tested in a soundproof measuring chamber during the end-of-line test, it can be assumed that the measuring microphone only delivers a few microvolts.
Therefore, the choice of the input measuring range of the measurement data acquisition is very important. Assuming that the measuring card has a measuring range of 10,000 mV and the measuring microphone is exposed to a sound pressure level of 74 dB, which delivers 5 mV, then the measuring range of 10 volts is far too coarse for this application.
Our solution for this application is the PnDL-100 with an input measuring range of 100 mV, which provides an acoustic measuring range of 13 to 97 dB(A).
1/4″ microphone
50 mV/Pa
Class 1 – IEC 61672
Free Field
20 Hz to 20 kHz
30 dBA to 130 dB
Price: 325 €
1/4″ microphone
50 mV/Pa
Class 1 – IEC 61094-5
Free Field
5 Hz to 30 kHz
27 dBA to 130 dB
Price: 588 €
1/2″ microphone
40 mV/Pa
Class 1 – WS2F – IEC 61094-4
Free Field
4 Hz to 20 kHz
16 dBA to 135 dB
Price: 854 €
1/2″ microphone
50 mV/Pa
Class 1 – WS2F – IEC 61094-4
Free Field
0.5 Hz to 20 kHz
16 dBA to 135 dB
1/2″ USB microphone
WS2F according to IEC 61094-4
Free Field
4 Hz to 20 kHz
16 dBA to 140 dB
pre-polarized
Price: 765 €
1/4″ USB microphone
WS3F according to IEC 61094-4
Free Field
10 Hz to 40 kHz
35 dBA to 155 dB
pre-polarized
1/2″ USB microphone
WS2F according to IEC 61094-4
Free Field
1 Hz to 20 kHz
15 dBA to 140 dB
pre-polarized
Price: 1625 €
1/4″ USB microphone
WS3F according to IEC 61094-4
Free field
5 Hz to 75 kHz
35 dBA to 158 dB
pre-polarized
