ETMC Technologies :: G.R.A.S. Sound & Vibration :: Type 40EU - a 1" laboratory-standard microphone for use in couplers. It fulfils the requirements as a replacement for WE 640 microphones. Capable of measuring sound pressure levels up to 146 dB re. 20µPa.

<H1>No Frames? No Problem!</H1> <p><br>Go to G.R.A.S. Sound & Vibration web site with <A HREF="http://www.gras.dk/00012/00013/00029/00216/">no-frames</A>.</p> <p>The Type 40EU is a 1-inch laboratory-standard microphone for use in couplers. It fulfils the requirements as a replacement for WE 640 microphones. <p>As a pressure microphone, it has a flat pressure-frequency response over its entire working frequency range, ideal for measuring both very high sound pressure levels and high frequencies. <p>This microphone is capable of measuring sound pressure levels up to 146 dB re. 20µPa. <p>Specifications Type 40EU (LS1P) <p>Sensitivity: 50 mV/Pa <p>Dynamic range: 9.6 - 146 dB re. 20µPa <p>Frequency range: 2.6 Hz - 8 kHz <p>Polarisation voltage: 200 V <p>Outside diameter (with protection grid): 23.77 mm <p>Length: (with and 19.0 mm <p>without protection grid): 17.1 mm