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Figure 86.0
Figure 862.0

TM-5-3895-374-10 Paving Machine Bituminous Material: Crawler Mounted Diesel Engine Driven Manual
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TM 5-3895-374-10 options . . utilities .................................................................................................................................. CALIBRATION display <8> <6> The  Calibration  menu  subscreen  is  shown  in  Figure  86.0.    Note  that  this  screen  overlays  the  previous  menu  with  the continuation options allowed for calibration and system configuration tasks. Some process control systems are calibrated with screwdriver, voltmeter, and  stopwatch  and  leave  the  operator  with  no certain knowledge of the exact settings for current or previous calibrations.  This computer is calibrated through the keypad so  that  all  calibrations  are  numeric  values  that  can  be  printed  and  kept  for  reference.    Consistency  of  values  from calibration  to  calibration  indicate  system  stability.    Unauthorized  changes  to  calibrations  can  quickly  and  certainly  be determined  by  comparison  with  the  printed  and  dated  calibration  record.    For  most  cases,  the  entire  computer  could  be replaced and after installing the ’old’ calibration values would be in tolerance. The Continuation Options are: OPTION KEY DESCRIPTION ESCape ESC Return to the previous display. Alarm Limits 2 Display the screen containing the user selected alarm  tolerances  and  the  time  for  a continuous out of tolerance condition to cause plant shutdown.    From  this  screen  all values can be edited. Time Delays 3 Display the screen containing the user measured process    timing    intervals.        Each time interval is the time required for a material to reach the point     of     liquid     asphalt addition as measured from the point at which the material is controlled.        From    this screen all values can be edited. Meters 5 Display the screen containing the zero and span calibration   values   for   all   ’meters’. From this screen all values can be edited.  From this screen various computer assisted calibration procedures can be selected. Feeder Rates 8 Display the screen containing the span calibration values for the feeders.  From this screen all values can be edited.  From this screen various computer assisted calibration procedures can be selected. page F - 54 SYSTEMS Equipment Corp.  8/31/89Page   (29)







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