Program 
Code 
 
Function 
 
Code Description  Prod 1
 
Prod 2  Prod 3 Prod 4
 
Issue/Rev. 0.3 (8/97)  61
500  Product Pressure Directory 
 
 
501  Minimum Back  Enter:  Four digits to select 
  Pressure Flow     the minimum flow rate allowed 
  Rate Setting    during back pressure operation in 
      whole units per minute. (e.g., 0100) 
      "0000" disables the alarm  _____  _____  _____  _____ 
 
 
502  Differential Pressure  Enter:  Three digits of differential 
      pressure in units of psia, bars, or 
    kg/cm
2
 that is to be maintained above 
      the vapor pressure or back pressure 
      (e.g., 060). Unit selection is 
      made in code 541 of the Systems 
      Directory.  ____ ____ ____ ____ 
 
 
503  Minimum Back   Enter:  Two digits in seconds 
  Pressure Flow Rate    to achieve a desired flow rate 
  Timer Setting    (e.g., 20). 
      "00" disables this minimum flow rate 
      timer and the back pressure reduction 
      in code 504.  ___  ___  ___  ___ 
 
 
504  BP Reduction  Enter:  Two digits in % reduction of 
      flow rate for back pressure flow 
      control and AFO (e.g., 90)  ___  ___  ___  ___ 
 
 
505  Low Pressure Alarm  Enter:  Four digits indicating  
      the pressure reading that will 
      generate a low pressure alarm. 
      The range is from 0000 to 9999. 
      Pressure units are dependent 
      on entry made in code 541 
      of the Systems Directory. 
      An entry of 0000 will disable 
      this feature.  _____ _____ _____ _____ 
 
 
506  High Pressure Alarm  Enter:  Four digits indicating 
      the pressure reading that will 
      generate a high pressure alarm. 
      The range is from 0000 to 9999. 
      Pressure units are dependent 
      on entry made in code 541 
      of the Systems Directory. 
      An entry of 0000 will disable 
      this feature.  _____ _____ _____ _____