Our GPS Interface System combines a digital LCD Engine Hour Meter, Tachometer, Fuel Flowmeter, Fuel Totalizer and nautical Miles Per Gallon over the ground in a single 3-3/8" diameter instrument which fits the panel space of a standard tachometer.  The speed signal required to calculate the nMPG reading is obtained from GPS and Loran systems having a NMEA 0183 serial port output.

The direct display of nautical Miles Per Gallon over the ground gives the skipper a powerful new tool to set optimum fuel efficiency under all conditions and to determine precisely how far he can go with his remaining fuel.

Gas Model Features

• Fits most gas engines rated from 25 hp to 2000 hp. Twin gas models available.
• Microprocessor based electronics with 2-stage adjustable calibration of GPH & gallons used for superior accuracy.
• Simultaneous independent display of Engine Hour Time, RPM, GPH, gallons consumed, and nautical MPG.  Twin gas model displays the MPG rate for BOTH engines underway.
• RPM readout accurate to 10 RPM. Easily connects to existing tach signal wires. 
• GPH and Totalizer readings displayed in tenths of a gallon.  Totalizer capacity up to 99,999 gallons.
• Dual color (amber/green) backlighting of LCD provides for easy night viewing.
• Single engine models require 2 external SPST (on/off) panel switches for resetting fuel totalizer reading and GPH/MPG selection. 
• Twin gas models also incorporate an Engine Synchronizer Indicator and Port/Stbd GPH and RPM selection.  2 additional SPST panel switches are required for accessing these features.
• Meter fits 3-3/8" panel opening (standard tach size).  Can replace existing tachs in panel.
• Models available in black or white (bezel/dial face).
• Uses Model 20A, 2OB, 231, and 233 Series flow sensors designed for gas engines.