Laserfiche WebLink
r <br /> Troxler RoadreaderTM 3440 Application Brief <br /> gauge. Above the keypad is a four line by sixteen character Liquid Crystal Display screen <br /> allowing for descriptive menus. <br /> Data Storage <br /> The Model 3440 gaud can store up to 450 test readings for later recall or downloading to a <br /> printer or computer. Measurements are stored under specific project numbers and station <br /> numbers. In addition to the measurement information, project number and station number,the <br /> gauge is capable of storing additional numeric notes. The gauge can also prompt for the <br /> information commonly required on U. S. Federal Highway Administration(FHWA)projects when <br /> the Special Rdwy option is enabled on the Special function menu. These prompts are specific <br /> to Soil,Stone or Asphalt and include categories such as: FHWA number,lane direction, <br /> distance from centerline,lift number,test type,etc. <br /> Batteries and Power Consumption <br /> The Model 3440 gauge runs on a rechargeable NiCad battery. Under normal conditions a fully <br /> charged battery will remain operational for approximately 8 weeks. When the"BATTERY LOW <br /> warning appears,there are a few hours remaining before the battery must be recharged. A full <br /> charge (16 hours) is recommended at that time,but a 30-minute recharge will provide several <br /> hours of use if necessary. Two adapters are included as standard accessories with this gauge: <br /> a 115/230 VAC(50/60 Hz)and a 12 VDC charger. Alkaline batteries(D size)can be used <br /> temporarily in the event that recharging is not an option. A separate battery case is supplied for <br /> this purpose. <br /> Additional Features <br /> A number of other features are offered by the Model 3440 gauge to provide ease of operation <br /> and to ensure that the gauge is performing properly. When in the automatic depth mode,the <br /> gauge automatically reads the depth strip on the index rod. The gauge determines the source <br /> depth;therefore the operator no longer is required to program in the depth of each test.This <br /> gauge also offers a calculator mode which,when enabled,allows the keypad to be used as a <br /> four function calculator. The"Auto Station"function will automatically increment the station <br /> number of each test by one after an initial station number is entered. The Model 3440 gauge <br /> can measure the density of thin layer asphalt or concrete provided the overlay thickness and the <br /> underlying material density is entered into the gauge. This feature,called the nomograph mode, <br /> is not as accurate as a true thin layer gauge but can produce satisfactory results under many <br /> conditions. The first 18 month limited warranty in the Industry is offered with the Troxier Model <br /> 3440 RoadreaderTM nuclear moisture/density gauge. In addition to those options Gated here, <br /> many more are included on the Model 3440 to assist the operator in the everyday testing of sods <br /> and asphalt. <br /> Correct gauge operation is promoted by a number of features. A STAT(statistical stability)test <br /> may be performed by the operator to validate the normal operation of the gauge. After a STAT <br /> test,a Drift test can check the long term drift of the gauge if a problem is suspected. Standard <br /> count comparison,validation and storage is also done by the Model 3440. The last 4 standard <br /> counts are stored in the gauge's memory and the average is compared to the new standard <br /> count to verify that it is within the specified limits. A precision option is offered in order to <br /> achieve a desired degree of precision under certain conditions. Special Calibration can be <br /> enabled to temporarily recalibrate the gauge constants for use in measuring particular materials <br /> that do not fad within the range of a normal calibration. <br /> AB3440-0907 3 of 4 <br /> 14 <br />