Measurement Microphone – Measuring Microphone – Infrasonic Microphone – Ultrasonic Microphone

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.

1/4″ measurement microphones with a pre-polarized capsule deliver a voltage of 3 to 5 mV/Pa and have a self-noise of around 35 dB(A).

With a sensitivity of 100 mV/Pa, the MI19-HS has a twenty times higher output voltage at 24 dB(A) self-noise.

The high signal-to-noise ratio and the high sensor sensitivity have an optimum effect on the resolution of the measurement data acquisition, which leads to better measurement results.

1/4″ microphone

100 mV/Pa

Class 1 – IEC 61672

Free Field

20 Hz to 30 kHz

24 dBA to 127 dB

Price: 425 €

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

Price: 1446 €

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

Price: 1670 €

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

Price: 1615 €

Measuring range, sound pressure level and microphone sensitivity.

A typical 1/2″ measurement microphone delivers a voltage of 50 mV at 1 Pascal. 1 Pascal corresponds to a sound pressure level of 94 dB. 94 dB is already very unpleasant for humans and is only tolerated in rare situations.

During 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 end-of-line testing involves acoustically testing parts in a soundproof test chamber, it can be assumed that the measurement microphone delivers only a few microvolts.

Low Noie IEPE Microphone USB DAQ

The choice of the input measurement range for the measurement data acquisition is therefore crucial. Assuming that the measurement card has a measurement range of 10,000 mV and the measurement microphone is exposed to a sound pressure level of 74 dB, which delivers 5 mV, the 10,000 mV measurement range is significantly too coarse for this application.

The difference becomes even more apparent when you consider that verbal interaction is reduced in the office. At a sound pressure level of 54 dB, the voltage detected by the measurement microphone is 0.5 mV.

The comparison scenario with a scale with a 10,000 kg measurement range illustrates that weighing a 0.5 kg object is associated with a high degree of inaccuracy.

Our solution for this application is the PnDL-100 with an input measurement range of 100 mV, which delivers an acoustic measurement range of 13 to 97 dB(A).

Measurement microphone systems from 0.5 Hz to 100 kHz

Industrial acoustic microphones in 1/2“ and 1/4” versions with USB or IEPE interface

Measurement Microphone - Measuring Microphone - Infrasonic Microphone - Ultrasonic Microphone

High Sensitivity 100 mV/Pa
Range 24 dB(A) to 130 dB^Peak

IEPE Measurement Microphones

USB Measurement Microphones Industrial Grade

Measurement microphone systems from 0.5 Hz to 100 kHz

Industrial acoustic microphones in 1/2“ and 1/4” versions with USB or IEPE interface

Measurement Microphone - Measuring Microphone - Infrasonic Microphone - Ultrasonic Microphone

High Sensitivity 100 mV/PaRange 24 dB(A) to 130 dBPeak

IEPE Measurement Microphones

USB Measurement Microphones Industrial Grade

High Sensitivity 100 mV/Pa
Range 24 dB(A) to 130 dB^Peak