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FloBoss™ 503 Flow Manager (Discontinued)
The FloBoss 503 is a discontinued product as of October 1, 2017.
Please refer to the Documents and Drawings section below to locate important product information or visit our SupportNet customer portal by clicking on the 'Access Portal' button below. For information on alternative products, please click on the 'View Compatibility' button below.


  • AGA gas measurement for 1 meter run
  • PID loop control with override for 1 loop
  • Logic/sequencing control implemented through 2 function sequence tables (FSTs)
  • Archival of 15 history points
  • Logging of 240 alarms and 240 events
  • 16 log-on identifiers (IDs) may be stored for security
  • Sampler control for odorizers, etc.
  • One operator interface port is standard
  • One port is available for EIA-232, EIA-485, or dial-up modem
  • ROC and Modbus protocols are supplied