ETMC Technologies :: G.R.A.S. Sound & Vibration :: 45CB Acoustic Test Fixture and 67SB LEMO Blast Probe according to ANSI S12.42

<H1>No Frames? No Problem!</H1> <p><br>Go to G.R.A.S. Sound & Vibration web site with <A HREF="http://ansihead.com">no-frames</A>.</p> <dd>The G.R.A.S. 45CB Acoustic Test Fixture is specified and designed to comply with the newly released ANSI/ASA S12.42 standard. <p> <dd>This test fixture will enable you to test all types of hearing-protectors in the most realistic way - both in the acoustic lab and in the field.<p> <dd>The new standard is unique because it approaches testing of both ear-muffs and ear-plugs - all with the same fixture properties and testing parameters. This makes comparison straight forward, and no questions are asked when it comes to the reliability of your test data.<p> <dd><ul><li>silicone lined inner ear<p> <li>heated inner ear (to body temperature)<p> <li>choice of standard ½" artifical ear or a ¼" artificial ear for very high SPL testing<p> <li>can test 'double' protection - <i>i.e.</i> over-ear protectors on top of insert type protectors simultaneously<p> <li>robust unit, designed for testing with very high impulse sound (e.g. nearby explosions)<p> </ul> <dd>The G.R.A.S. 67SB LEMO Blast Probe is also designed to comply with the ANSI/ASA S12.42 standard, which states that you must monitor the noise source in tests.<p> <dd>The 67SB is equipped with a &frac18;" reference microphone that is designed to capture impulsive noises with a very short time resolution.