Home


Click to enlargeThe Probe Microphone type 40SA is a small, compact unit for sound pressure measurements in small enclosures, in harsh environments and very close to sound sources. 

The high acoustic input impedance of the probe tip minimises the influence on the acoustic field, while the stainless steel probe tube (the 160 mm tip) can withstand temperatures of 800 ºC.

The probe is constructed with a detachable probe tip in stainless steel that guides the acoustic signal to a microphone inside the probe housing.

The Probe Microphone is internally compensated to equalise the static pressure at the probe tip with the internal microphone pressure.

Download Product Data: pd_40SA_ver_27_06_03.PDF

Related Products:

Type 40SC

Adobe Acrobat reader is required for viewing data sheets.

Download Acrobat Reader





Specifications Type 40SA

Sensitivity at 250 Hz:

3 mV/Pa nominal

Dynamic range (upper limit):

>174 dB re. 20µPa

Frequency range (with corrections):

2 Hz - 20 kHz

Electrical output impedance:

< 50 Ohm

Typical noise, A-weighted and:

6 µV or 40 dBA

Lin (20 Hz - 20 kHz):

3 µV or 54 dB

Weight:

40 g

Print | Back

Updated 8. december 2006

  US Office · 2285 East Enterprise Parkway · Twinsburg OH 44087 · Tel. 330 425 1201 · Fax 330 425 1235 · E-mail gras@gras.us