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Revision 1.3 Page 1
®®
1 General
1.1 Introduction
Congratulations on your purchase of the Maretron Fluid Pressure Monitor (FPM100). Maretron
has designed and built your monitor to the highest standards for years of reliable, dependable,
and accurate service.
Maretron’s Fluid Pressure Monitor (FPM100) is used to adapt up to six pressure transducers to
the NMEA 2000
®
network (pressure transducers sold separately). This allows you to observe
fluid pressures and tank levels anywhere on the vessel where there are NMEA 2000
®
compatible displays. With the appropriate transducer, the FPM100 reports either pressure or
vacuum for a variety of applications including water pressures, oil pressures, hydraulic
pressures, or system vacuum for detecting clogged filters.
The FPM100 also has a tank level mode, so that fluid levels in a tank can be monitored via a
pressure transducer mounted at the bottom of the tank and transmitted over the NMEA 2000
®
network. This allows you to monitor the fluid levels in tanks that are extremely deep, have
internal structures, or are otherwise not suited for other tank level sensing technologies. In this
mode, the FPM100 can be calibrated for irregular tank shapes so that you know the true level
of the tanks.
The Maretron FPM100 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 FPM100 in order to
ensure optimal performance.
1.2 Firmware Revision
This manual corresponds to FPM100 firmware revision 1.0.1.
1.3 Features
The Maretron FPM100 has the following features:
• NMEA 2000
®
interface
• Adapts up to six pressure transducers to the NMEA 2000 network
• Each channel independently programmable to match pressure transducer
characteristics
• Each channel independently programmable to pressure/vacuum mode or tank level
mode
• In Pressure Mode:
o Can report programmable pressure sources including Water Pressure,
Atmospheric Pressure, Compressed Air Pressure, Hydraulic Pressure, Steam
Pressure, or User Defined pressure sources.
• In Tank Level Mode:
o Pressure transducer allows use in extremely deep or irregularly shaped tanks
that can’t be sensed using other technologies