13. Adjustment

     Adjusts the range. There are three
     functions.
      -- Set LRV: Sets the LRV at the input
         pressure.
      -- Set URV: Sets the URV at the input
         pressure.
      -- Set LRV at actual output: Sets the
         LRV so that the present output value
         is used as the preset value.
     
     The output changes according to the
     setting of dumping.