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Figure 8652.5
Figure 8654.0

TM-5-3895-374-10 Paving Machine Bituminous Material: Crawler Mounted Diesel Engine Driven Manual
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TM 5-3895-374-10 ....................................................................................................................................................... Meters by Average Value 6-MINUTE TIMED VERIFICATIONS The   6-minute   timed   scale   test   provides   a   convenient   method   for   verifying   belt   scale   calibrations   under   controlled conditions.    The  operator  controls  the  start  of  the  test.    During  the  following  6-minute  interval,  the  average  equivalent aggregate rate, accumulated tons and average belt speed is measured for each scale.  This data is automatically printed at the end of the interval. NOTE: Belt speed is printed because the equivalent rate and totals determined by test weights is directly proportional to belt speed.  On generator supplied plants, belt speed is proportional to generator frequency. 1) Start belt conveyors, run empty for at least 15 minutes and verify or establish a stable zero reading. 2) Select the METER CALIBRATION BY AVERAGE VALUE display (key strokes 8652).  See Figure 8652.5 3) Optional:  Restart the 6-minute Interval by selecting Option 6.  At the end of 6 minutes a record verifying zero will be printed. 4) Place the asphalt switch in DIVERT LOCKED position!  Lower the test weights on the scale. 5) Restart the 6-minute Interval by selecting Option 6.  At the end of 6 minutes a record of the equivalent aggregate rate  will  be  printed.    See  Figure  8652.6.    Verify  this  data  is  (within  allowable  tolerance)  equal  to  the  values recorded during scale certification. NOTE: Left unattended, the computer will continue to repeat these 6-minute tests and printouts. page F - 75 SYSTEMS Equipment Corp.  8/31/89  Page (40)







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