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Troxkr Road=&r-3440 Application Brief <br /> Summary <br /> The Troxler RoadreaderTM nuc4ear moisture/density gauge is used by many contractors, <br /> engineers,and highway departments for compaction control of soil,aggregate,concrete and NO <br /> depth asphalt.The ASTM standard numbers D 6938, D 2950,and C 1040 are met or exceeded <br /> by this gauge. Two test modes are available for density determination:direct transmission and <br /> backscatter. The operator selects the mode depending on the material type and thickness of <br /> the layer being tested. The Model 3440 provides 30 special functions,storage of up to 450 test <br /> records,an 18 month warranty and many more options that make it simple to operate and a <br /> necessity for all technicians. <br /> Measurement Precision <br /> Model 3440 Nuclear Moisture/Density Gauge <br /> Direct Transmission(6"/150mm) 15 sec. 1 min. 4 min. <br /> Precision at 125 pcf +/-0.42 +/-0.21 +/-0.11 pcf <br /> 2000kg/m' +/-6.8 +/-3.4 +/-1.7 kg/m- <br /> Composition error at 125pcf +/--1.25 +/--1.25 +/-1.25pcf <br /> 2000kg/m- +/-20 +/-20 +/-20kg/m' <br /> Surface error(0.05", 100% Void)pcf -1.1 -1.1 -1.1pcf <br /> (1.25mm,100%Void)kg/m- -17 -17 -17kg/m' <br /> Backscatter(98%)(4"/100mm) <br /> Precision at 125 pcf +/--1.00 +/--0.50 +/-0.25pcf <br /> 2000kg/m3 +/-16 +/-8 +/-4kg/m3 <br /> Composition error at 125 pcf +/--2.5 +/--2.5 +/-2.5pcf <br /> 2000kg/m- +/-40 +/-40 +/-40kg/m' <br /> Surface error(0.05, 100% Void)pcf -4.7 4.7 -4.7pcf <br /> (1.25mm,100%Void)kg/m- -75 -75 -75kg/m' <br /> Moisture <br /> Precision at 15 pcf +/--0.64 +/-0.32 +/-0.16pcf <br /> 250kg/m' +/-10.3 +/-5.1 +/-2.5kg/m3 <br /> Surface error(0.05", 100% Void)pcf -1.12 -1.12 -1.12pcf <br /> (1.25mm, 100%Void)kg/m3 -18 -18 -18kg/m' <br /> Depth of measurement at 15 pcf =8.5" <br /> 250 kg/m3=212.5 mm <br /> AB3440-0907 4 of 4 <br /> 15 <br />