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Cjt�[� ressure level <br /> A re "ate b dB(A)re 20 Pa 101 <br /> 31,5 Hz dB 83 <br /> 63 Hz dB 90 <br /> 125 Hz dB 96 <br /> 250 Hz dB 98 <br /> 500 Hz dB 97 <br /> 1 1000 Hz dB 95 <br /> 2000 Hz dB 94 <br /> 4000 Hz dB 94 <br /> 8000 Hz dB 92 <br /> Exhaust gas a dB(A)re 20 Pa 119 <br /> 31,5 Hz dB 109 <br /> 63 Hz dB 119 <br /> 125 Hz dB 128 <br /> 250 Hz dB 117 <br /> 500 Hz dB 115 <br /> 1000 Hz dB 114 <br /> 2000 Hz dB 111 <br /> 4000 Hz dB 106 <br /> 8000 Hz dB 91 <br /> Sound power level <br /> Aggregate d6 A re 1 pW 122 <br /> Measurement surface ft2 1,464 <br /> Exhaust as dB(A)re 1 pw 127 <br /> Measurement surface ft2 67.60 <br /> a) average sound pressure level on measurement surface in a distance of 3.28ft according to DIN 45635,precision class 2. <br /> b) average sound pressure level on measurement surface in a distance of 3.28ft(converted to free field)according to DIN 45635, <br /> precision class 3. <br /> The spectra are valid for aggregates up to bmpe=290.07548 psi.(add savety margin of 1 dB to all values per increase of 15 PSI <br /> pressure). <br /> Operation with 1200 rpm see upper values,operation with 1800 rpm add 3 dB to upper values. <br /> Engine tolerance t 3 dB <br /> 19.04.2011/2 TS JGS616 E22 4160V April 19 2011 Ameresco Forward LFG-WES <br /> 7132 <br />