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Revision 1.2 Page 1
®®
1 General
1.1 Introduction
Congratulations on your purchase of the Maretron Fuel Flow Monitor (FFM100). Maretron has
designed and built your monitor to the highest standards for years of reliable, dependable, and
accurate service.
Maretron’s Fuel Flow Monitor (FFM100) is used to adapt up to two positive displacement fluid
flow sensors to the NMEA 2000
®
network (Fluid Flow sensors sold separately). This allows you
to observe engine fuel usage on a vessel where there are NMEA 2000
®
compatible displays.
With the appropriate sensor, the FFM100 reports flow rate for diesel engines or gasoline
engines.
The FFM100 can be used with the positive displacement sensors to detect flow rates of many
other types of fluid as well, including water, hydraulic oil, or other fluids.
The Maretron FFM100 is designed to operate within the harsh demands of the marine
environment. However, no piece of marine electronic equipment can function properly unless
installed, calibrated, and maintained in the correct manner. Please read carefully and follow
these instructions for installation, calibration, and usage of the Maretron FFM100 in order to
ensure optimal performance.
1.2 Firmware Revision
This manual corresponds to FFM100 firmware revision 1.0.1.
1.3 Features
The Maretron FFM100 has the following features:
• NMEA 2000
®
interface
• Adapts up to two fluid flow sensors to the NMEA 2000 network
• Each channel independently programmable to match fluid flow sensor characteristics
• The FFM100 can be programmed to measure a differential flow rate using two fluid flow
sensors (supply and return flow for diesel engines) or two completely independent flow
rates.
1.4 FFM100 Accessories
Maretron offers the following accessories for the FFM100:
• M1RSP-2R-E8 Fuel Flow Sensor 20 to 200 HP (0.53 to 26.4 GPH, 2 to 100 LPH)
• M2RSP-2R-E8 Fuel Flow Sensor 200 to 1000 HP (4 to 132 GPH, 15 To 500 LPH)
• M4ARP-2-E8 Fuel Flow Sensor 1000 to 3000 HP (48 to 396 GPH, 180 To 1500
LPH)
1.5 Quick Install
Installing the Maretron FFM100 involves the following steps. Please refer to the individual
sections for additional details.