ETMC Technologies :: G.R.A.S. Sound & Vibration :: Type 45CA - Hearing-protector Test Fixture: for testing the performance of hearing-protection devices such as ear plugs and ear muffs (supra-aural as well as circum-aural). It conforms with ISO 4869-3 and can be used mono-aurally or binaurally: * WS1P or WS2P microphones respectively 1-inch or 1/2-inch (with adapter, e.g. RA0017) * IEC 60318 Ear Simulators (RA0039). It can also be fitted with IEC 60711 Ear Simulators (RA0045) and a range of moulded-rubber Ears for testing ear plugs.

<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/00012/00058/00353/">no-frames</A>.</p> <p>The G.R.A.S. Hearing-protector Test Fixture Type 45CA is for testing the performance of hearing-protection devices such as ear plugs and ear muffs (supra-aural as well as circum-aural). It conforms with ISO 4869-3 and can be used with one1 or two 2: <p> * WS1P or WS2P microphones respectively 1-inch or ½-inch (with adapter, e.g. RA0017) <p> * IEC 60318 Ear Simulators (RA0039) <p>It can also be fitted with IEC 60711 Ear Simulators (RA0045) and a range of moulded-rubber Ears for testing ear plugs. <p>The Test Fixture is mounted on a resilient base which reduces the noise floor to a minimum in a typical test situation. <p><p>1 For monaural measurements <p>2 For binaural measurements <p>3 minimum required as in Figure 1 of ISO/DIS 4869-3 <p><p>Specifications Type 45CA <p>Built in accordance with: ISO 4869-3 (can also be used with two microphones for binaural testing) <p>Accessories included: Acoustic cup GR0974, Acoustic plug GR1069 <p>Accessories available: See data sheet <p>Dimensions: <p>total height: 374 mm <p>width: 145 mm <p>base diameter: 215 mm <p>Weight: 11.6 kg