Page 378 - Reciprocating Compressors Operation Maintenance
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Preventive  Maintenance for  Reciprocating  Compressors  363


           Dual Vibration
             Monitor







































         FIGURE   6-5.  Modern  monitoring system  for reciprocating  compressors,
         (Source:  Bently-Nevada  Corporation, Minden,  Nevada).




         group. Two levels of alarms can  be programmed  for  any  combination  of
         over, under, or  differential  temperature  for  each  channel.  If  the  differen-
         tial  temperature alarm is selected,  an alarm occurs  when the channel  is a
         specified  number of degrees greater (or less) than the setpoint,  compared
         to the average  of the channels  in the  group. Actual temperatures  and  the
         average temperature of the jumper-programmed  group are also  available.
           A single cable design from  transducer interface modules to the monitor
         is used to minimize installation  wiring  costs and labor.
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