®
FPM100
Fluid Pressure Monitor
User’s Manual
Revision 1.3
Copyright © 2012 Maretron, LLP All Rights Reserved
Maretron, LLP
9014 N. 23rd Ave #10
Phoenix, AZ 85021
Maretron Manual Part #: M002801
Revision 1.3
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Table of Contents
1.1 Introduction....................................................................................................................1
1.2 Firmware Revision.........................................................................................................1
1.4 FPM100 Accessories.....................................................................................................2
1.5 Quick Install ...................................................................................................................2
1.6 Theory of Operation.......................................................................................................3
1.6.2 Accuracy of Tank Level Measurement................................................................3
Installation............................................................................................................................4
2.4.1 Pressure Measurement Applications...................................................................5
2.4.2 Tank Level Measurement Applications ...............................................................6
2.5 Connecting the FPM100................................................................................................7
2.5.1 NMEA 2000® Connection....................................................................................7
2.5.2 Pressure Transducer Connections......................................................................8
3.1 Configuring Channel Mode............................................................................................9
3.2 Configuring a Channel in Pressure/Vacuum Mode........................................................9
3.2.1 Configuring Instance ...........................................................................................9
3.2.2 Configuring Label..............................................................................................10
3.2.3 Configuring Pressure at 4mA............................................................................10
3.2.4 Configuring Pressure at 20mA..........................................................................10
3.2.5 Configuring Source ...........................................................................................10
3.2.6 Configuring Data Damping Period ....................................................................10
3.3.1 Configuring Label..............................................................................................10
3.3.2 Configuring Pressure at 4mA............................................................................11
3.3.3 Configuring Pressure at 20mA..........................................................................11
3.3.4 Configuring Tank Capacity................................................................................11
3.3.5 Tank Levels Calibration.....................................................................................11
3.3.6 Configuring Tank Number.................................................................................12
3.3.7 Configuring Tank Type......................................................................................13
3.3.8 Configuring Data Damping Period ....................................................................13
Installation Template..........................................................................................................17
Maretron (2 Year) Limited Warranty...................................................................................18
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Table of Figures
Figure 4 – Fluid Level Measurement with Pressure Transducer................................................ 6
Figure 5 - Tank Mounting of the Pressure Transducer with Recommended Ball Value............. 7
Figure 6 – NMEA 2000® Connector Face Views ....................................................................... 8
Figure 8 – Empty Tank Depth and Full Tank Depth Parameters ............................................. 12
Table of Appendices
Appendix A – NMEA 2000® Interfacing.................................................................................... A1
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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
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o 16 programmable tank types including Fuel, Fresh Water, Waste Water
o Programmable tank number(s) up to 16 per tank type
o Programmable tank capacity
1.4 FPM100 Accessories
Maretron offers the following accessories for the FPM100:
• PT-V-0-1BAR-01 Pressure Transducer Vacuum to 1 Bar (14.5 PSI)
• PT-0-3PSI-01
• PT-0-5PSI-01
• PT-0-10PSI-01
• PT-0-50PSI-01
• PT-0-100PSI-01
• PT-0-300PSI-01
• PT-0-500PSI-01
Pressure Transducer 0 to 3 PSI (0.21 bar)
Pressure Transducer 0 to 5 PSI (0.34 bar)
Pressure Transducer 0 to 10 PSI (0.69 bar)
Pressure Transducer 0 to 50 PSI (3.45 bar)
Pressure Transducer 0 to 100 PSI (6.89 bar)
Pressure Transducer 0 to 300 PSI (20.68 bar)
Pressure Transducer 0 to 500 PSI (34.47 bar)
• PT-0-1000PSI-01 Pressure Transducer 0 to 1000 PSI (68.95 bar)
• PT-0-3000PSI-01 Pressure Transducer 0 to 3000 PSI (206.84 bar)
• PT-0-5000PSI-01 Pressure Transducer 0 to 5000 PSI (344.74 bar)
• PT-SNUB-01
Pressure Snubber
WARNING
Maretron pressure transducers are not approved for use with gasoline. If you
wish to use the FPM100 to monitor pressures or levels of gasoline, you must
obtain a pressure transducer that is approved for use with gasoline.
1.5 Quick Install
Installing the Maretron FPM100 involves the following steps. Please refer to the individual
sections for additional details.
6. For each channel in Pressure/Vacuum mode:
7. For each channel in Tank mode:
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o Configure for Tank Depth and Shape
1.6 Theory of Operation
The FPM100 operates by measuring the current transmitted by pressure transducers.
When you are using the FPM100 in conjunction with a pressure transducer to perform tank
level measurement, it is important to understand the relationship of tank depth, the range of
the pressure transducer, and the accuracy of the resulting tank level reading.
1.6.1 Choosing a Pressure Transducer Mounting Location for Tank Level
Measurement
Choosing a proper mounting location for pressure transducers is critical to obtaining accurate
tank level measurements. The pressure transducer should be mounted as close to the bottom
of the tank as possible, as the pressure transducer will not be able to measure fluid levels
below the pressure port on the transducer.
1.6.2 Accuracy of Tank Level Measurement
Maretron offers two pressure transducers that are suitable for indicating tank levels: a 0-3 PSI
transducer and a 0-5 PSI transducer. For maximum accuracy, you should always use the
transducer with the smallest range that is sufficient for your application.
The accuracy of these transducers is specified to be ±2% full scale. However, if you are using
a transducer to measure the level of a tank where you are using only a portion of that
transducer’s range, the accuracy will be less than this. For example, if you are using a 0-3 PSI
(0-0.21 bar) pressure transducer to measure a tank level of water in a 41.5” (1.05m) deep tank,
the pressure measurements will vary over a range of 0 to 1.5PSI (0 to 0.10 bar) – only half the
designed range of the pressure transducer. Therefore, the ±2% full scale accuracy
specification of the transducer means that the accuracy of the transducer in this example will
see the actual accuracy for either a 0-3 PSI (0-0.21 bar) transducer or a 0-5 PSI (0-0.34 bar)
transducer.
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Figure 1 - Graph of Transducer Accuracy vs. Tank Depth
The pressure transducer you select must have sufficient range to measure the full height of the
sensed by each pressure transducer type. This table assumes that water level is being
measured. The maximum depth of diesel fuel can that can be measured varies from these
figures slightly depending on the density of the diesel fuel.
Transducer
Maximum tank depth
PT-0-3PSI-01 (0-3 PSI)
PT-0-5PSI-01 (0-5 PSI)
83.04” (2.11m)
138.4” (3.52m)
Figure 2 - Pressure Transducer Selection Chart for Tank Level Applications
2 Installation
2.1 Unpacking the Box
When unpacking the box containing the Maretron FPM100, you should find the following items:
• 1 – FPM100 Fluid Pressure Monitor
• 1 – Parts Bag containing 4 Stainless Steel Mounting Screws
• 1 – FPM100 User’s Manual
• 1 – Warranty Registration Card
If any of these items are missing or damaged, please contact Maretron.
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2.2 Choosing a Mounting Location
Please consider the following when choosing a mounting location.
1. The FPM100 is waterproof, so it can be mounted in a damp or dry location.
2. The orientation is not important, so the FPM100 can be mounted on a horizontal deck,
vertical bulkhead, or upside down if desired.
3. The FPM100 is temperature-rated to 55°C (130°F), so it should be mounted away from
engines or engine rooms where the operating temperature exceeds the specified limit.
2.3 Mounting the FPM100
Attach the FPM100 securely to the vessel using the included stainless steel mounting screws
containing methacrylate ester, such as Loctite Red (271), as they will cause stress cracking of
the plastic enclosure.
Figure 3 – Mounting the FPM100
2.4 Mounting the Pressure Transducer
All pressure transducer accessories for the FPM100 are fitted with 1/4” NPT male threads.
Some pressure transducers measure gage pressure (pressure above atmospheric). These
transducers have a small plastic vent tube enclosed in the connecting cable. Special care must
be taken not to block or kink the vent tube, and not to expose the vent tube to moisture.
2.4.1 Pressure Measurement Applications
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Keep in mind that the rated burst pressure of the pressure transducer is 2.4 to 3 times the
maximum measurement pressure of the transducer. If the pressure transducer will experience
pressure spikes in excess of the transducer’s maximum measurement pressure, use of a
Pressure Snubber (PT-SNUB-01) accessory is highly recommended. The snubber will dampen
pressure spikes that will be seen by the pressure transducer.
Please refer to the installation instructions packaged with the pressure transducer accessory
for detailed installation instructions for the transducer itself.
2.4.2 Tank Level Measurement Applications
The pressure transducer should be mounted to a properly sized fitting on the side of the tank
as close as possible to the tank bottom. The pressure transducer cannot provide an accurate
measurement when the fluid level is below the level of the pressure port of the pressure
transducer. Please refer to Figure 4 below for an example of pressure transducer mounting on
the side of the tank.
Full Tank Depth
Below Sensor Port, so
Cannot be Measured
Pressure Transducer
Figure 4 – Fluid Level Measurement with Pressure Transducer
It is highly recommended that a ball valve be mounted between the pressure transducer and
the tank. This allows the pressure transducer to be serviced without draining the tank. Please
refer to Figure 5 below for an example of the installed ball valve.
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Tank Fitting
Ball Valve
Pressure Transducer
Figure 5 - Tank Mounting of the Pressure Transducer with Recommended Ball Value
The FPM100 requires two types of electrical connections: 1) the NMEA 2000® connection
2.5.1 NMEA 2000® Connection
The NMEA 2000® connector can be found on the side of the enclosure. The NMEA 2000®
NMEA 2000® network using a Maretron NMEA 2000® cable (or an NMEA 2000® compatible
cable) by connecting the female end of the cable to the FPM100 (note the key on the male
connector and keyway on the female connector). Be sure the cable is connected securely and
that the collar on the cable connector is tightened firmly. Connect the other end of the cable
(male) to the NMEA 2000® network in the same manner. The FPM100 is designed such that
you can plug or unplug it from an NMEA 2000® network while the power to the network is
connected or disconnected. Please follow recommended practices for installing NMEA 2000®
network products.
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Figure 6 – NMEA 2000® Connector Face Views
2.5.2 Pressure Transducer Connections
The FPM100 pressure transducer connections are made by connecting to the 12-pin terminal
strip on the top of the unit. First, remove the four screws at the corners of the unit detaching
the splash guard from the unit. On the bottom of the splash guard, you will find a label
detailing the wire connection to pin number assignments, which are repeated in the table
below.
Pin #
1
Signal Name
P0+
Connection
Pressure Transducer 0 (positive terminal)
Pressure Transducer 0 (negative terminal)
Pressure Transducer 1 (positive terminal)
Pressure Transducer 1 (negative terminal)
Pressure Transducer 2 (positive terminal)
Pressure Transducer 2 (negative terminal)
Pressure Transducer 3 (positive terminal)
Pressure Transducer 3 (negative terminal)
Pressure Transducer 4 (positive terminal)
Pressure Transducer 4 (negative terminal)
Pressure Transducer 5 (positive terminal)
Pressure Transducer 5 (negative terminal)
2
3
4
5
6
7
8
9
P0-
P1+
P1-
P2+
P2-
P3+
P3-
P4+
10
11
12
P4-
P5+
P5-
shows the connection of the pressure transducer to channel 0 via the terminals named P0+
and P0-. Connections to other channels are similar.
Pressure Transducer
FPM100 Screw Terminals
1
2
3
4
5
6
7
8
9 10 11 12
Figure 7 – Pressure Transducer Connection Diagram
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3 Configuring the FPM100
The FPM100 has several configurable parameters, which are shown below including the
default values. If you are not using the default values, then you will need to refer to the
corresponding section for configuring the FPM100 appropriately.
2. Pressure/Vacuum Mode Configuration
3.1 Configuring Channel Mode
The FPM100 has 6 individually configurable channels. Each channel can be programmed to
operate in one of three modes:
1. Pressure/Vacuum Mode – In this mode, the FPM100 measures and transmits
pressure and/or vacuum directly over the NMEA 2000 network
2. Tank Mode – In this mode, the FPM100 measures pressure and uses information
about the tank dimensions and the type of fluid in the tank to calculate a tank level,
which is transmitted over the NMEA 2000 network
3. Disable – The channel is disabled and transmits no data over the NMEA 2000 network
The Disable mode requires no configuration. The following sections describe in detail the
configuration of an FPM100 channel for Pressure/Vacuum Mode and in Tank Mode.
3.2 Configuring a Channel in Pressure/Vacuum Mode
The following sections describe the parameters that are available for configuration for a
channel which has been set to Pressure/Vacuum mode.
3.2.1 Configuring Instance
Program this parameter to match the desired instance number of the pressure reading for this
channel. You can program this parameter to any value between 0 and 252.
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3.2.2 Configuring Label
Program this parameter with a text string which identifies the particular parameter being
monitored by this channel. Maretron display products will display this label text when you are
selecting data to display.
3.2.3 Configuring Pressure at 4mA
Program this parameter to match the pressure reading of the pressure transducer when it is
sourcing a current of 4mA. You can determine this value by examining the specification of the
pressure transducer being used.
3.2.4 Configuring Pressure at 20mA
Program this parameter to match the pressure reading of the pressure transducer when it is
sourcing a current of 20mA. You can determine this value by examining the specification of the
pressure transducer being used.
3.2.5 Configuring Source
You can configure a “Source” descriptor to be transmitted with the pressure reading which is
used to provide an indication of the source of the pressure data for this channel. Choices are
as follows:
1. Water Pressure
2. Atmospheric Pressure
3. Compressed Air Pressure
4. Hydraulic Pressure
5. Steam Pressure
6. 16 User Defined pressure sources (User Defined 129 – User
Defined 144)
3.2.6 Configuring Data Damping Period
You can configure a damping parameter to smooth the pressure readings or make them more
responsive. The data damping is configurable between 0.2-25.0 seconds. The default data
damping for a channel in Pressure/Vacuum mode is 3.0 seconds.
3.3 Configuring a Channel in Tank Mode
The following sections describe the parameters that are available for configuration for a
channel which has been set to Tank mode.
3.3.1 Configuring Label
Program this parameter with a text string which identifies the particular parameter being
monitored by this channel. Maretron display products will display this label text when you are
selecting data to display.
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3.3.2 Configuring Pressure at 4mA
Program this parameter to match the pressure reading of the pressure transducer when it is
sourcing a current of 4mA. You can determine this value by examining the specification of the
pressure transducer being used.
3.3.3 Configuring Pressure at 20mA
Program this parameter to match the pressure reading of the pressure transducer when it is
sourcing a current of 20mA. You can determine this value by examining the specification of the
pressure transducer being used.
3.3.4 Configuring Tank Capacity
In addition to indicating the fluid level within a tank, the FPM100 also has the ability to be
configured or programmed with the attached tank’s capacity. This way, you will be able to view
the tank’s capacity as well as the amount of liquid remaining anywhere on the vessel where
there is an NMEA 2000® compatible display. It is not required, but you can enter the FPM100
tank capacity using a display product such as the Maretron DSM250. Refer to the user’s
manual of the particular product that will be used for configuring the FPM100 as these manuals
provide detailed instruction on configuration procedures.
3.3.5 Tank Levels Calibration
The FPM100 can be easily programmed for use with tanks of rectangular cross-section (see
3.3.5.1 Rectangular Tank
3.3.5.1.1 Empty Tank Depth
This field should be programmed with the depth of the liquid column above the pressure
transducer when the tank is empty. If the transducer is installed directly in the tank, then this
value will normally be programmed to 0”. If the transducer is actually installed below the level
of the tank bottom, then this value should be programmed to the vertical distance between the
tank bottom and the pressure port on the pressure transducer.
3.3.5.1.2 Full Tank Depth
This field should be programmed with the depth of the liquid column above the pressure
transducer when the tank is full.
Please refer to Figure 8 below for an illustration of Full Tank Depth and Empty Tank Depth
parameters.
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Full Tank Depth
Empty Tank Depth
Figure 8 – Empty Tank Depth and Full Tank Depth Parameters
3.3.5.1.3 Fluid Density
In order for the FPM100 to properly convert pressure readings to tank levels using a
rectangular tank calibration, it must be configured with the density of the fluid being monitored.
The default value for this parameter is the density of fresh water (1000 kg/m3). If you are
monitoring the level of fluids other than water, you must program this parameter with the
density of the fluid being monitored.
The density of Marine Diesel Fuel is approximately 991 kg/m3. This value may vary depending
on the exact fuel formulation.
3.3.5.2 Custom Calibration
For accurate tank level readings, the FPM100 must be custom calibrated if the tank shape is
irregular or non-rectangular.
You can calibrate the FPM100 using a display product such as the Maretron DSM250. Refer to
the user’s manual of the particular product that will be used for configuring the FPM100 as
these manuals provide detailed instruction on configuration procedures.
3.3.6 Configuring Tank Number
As shipped from the factory, the FPM100 transmits the Tank Number as “0”. The FPM100
supports up to sixteen tanks (0 through 15) for a given type of tank, which means you can
monitor up to 16 separate fuel tanks or 16 separate fresh water tanks. The FPM100 is
configured or programmed by choosing a FPM100 tank number using a display product such
as the Maretron DSM250. Refer to the user’s manual of the particular product that will be used
for configuring the FPM100 as these manuals provide detailed instruction on configuration
procedures.
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3.3.7 Configuring Tank Type
As shipped from the factory, the FPM100 transmits the tank type as “Fuel”. You can
reconfigure the FPM100 for any of these tank types:
1. Fuel
2. Fresh Water
3. Waste Water
4. Live Well
5. Oil
6. Black Water
7. Reserved-1 through Reserved-7 (if none of the above types apply)
You configure or program a FPM100 tank type using a display product such as the Maretron
DSM250. Refer to the user’s manual of the particular product that will be used for configuring
the FPM100 as these manuals provide detailed instruction on configuration procedures.
3.3.8 Configuring Data Damping Period
You can configure a damping parameter to smooth the tank level readings or make them more
responsive. The data damping is configurable between 0.2-25.0 seconds. The default data
damping for a channel in Tank mode is 15.0 seconds.
4 Maintenance
Regular maintenance is not required; however, an occasional inspection will ensure continued
proper operation of the Maretron FPM100. Perform the following tasks periodically:
• Clean the unit with a soft cloth. Do not use chemical cleaners as they may remove
paint or markings or may corrode the FPM100 enclosure or seals. Do not use any
cleaners containing acetone, as they will deteriorate the plastic enclosure.
• Ensure that the unit is mounted securely and cannot be moved relative to the mounting
surface. If the unit is loose, tighten the screws holding the cable ties.
• Check the security of the cable connected to the NMEA 2000® interface and tighten if
necessary.
• Check the security of all of the pressure transducer connections on the top of the unit
and tighten if necessary.
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5 Troubleshooting
If you notice unexpected operation of the Maretron FPM100, follow the troubleshooting
procedures in this section to remedy simple problems.
Symptom
No Pressure
data visible on
NMEA 2000®
network.
Troubleshooting Procedure
1. Ensure that the FPM100 is properly connected to the NMEA 2000®
network.
2. Ensure that pressure transducers are properly connected to the
FPM100.
3. Ensure that each channel that you wish to monitor is configured as
“Pressure/Vacuum”and that instance numbers are configured
correctly.
4. Ensure that the FPM100 has the appropriate NMEA 2000 PGNs
enabled.
Inaccurate
pressure output
1. Ensure that the “Pressure at 4mA” and “Pressure at 20mA”
configuration items are set to appropriate values for the pressure
transducer.
2. Check that the vent tube from the pressure transducer (only present
on some transducers) is not kinked or blocked.
3. Remove the pressure transducer from the tank opening and ensure
that the pressure port on the transducer is not clogged.
1. If operating in the NMEA 2000® Mode, check the connection to the
2. Ensure that power is supplied to the NMEA 2000® network. Proper
network power can be checked by measuring the voltage at an open
tee between NET-S and NET-C. The voltage should be between 9 and
16 volts.
No Tank Level
data visible on
NMEA 2000®
network.
3. Ensure that both trunk line terminators are in place. Proper network
termination can be checked by removing network power and
measuring the resistance at an open tee between NET-L and NET-H
signals. The resistance should read approximately 60 ohms (two 120
ohm terminators in parallel equals 60 ohms).
Inaccurate tank 1. If operating with a rectangular tank, ensure that the tank depth is
level output
programmed properly (see Section Error! Reference source not
found.).
2. If using custom calibration, re-calibrate the FPM100 (see Section
3.3.5.2).
3. Check that the vent tube from the pressure transducer is not kinked or
blocked.
4. Remove the pressure transducer from the tank opening and ensure
that the pressure port on the transducer is not clogged.
1. Ensure that the “Pressure at 4mA” and “Pressure at 20mA”
configuration items are set to appropriate values for the pressure
transducer.
Zero pressure
readings when
pressurized
2. Check the cable connection to the pressure transducer to see whether
a wire has become loose, or the cable has been cut.
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Figure 9 – Troubleshooting Guide
If these steps do not solve your problem, please contact Maretron Technical Support (refer to
6 Technical Specifications
Specifications (Tank Level Mode)
Parameter
Value
Comment
Accuracy
+/-1% FS
Exclusive of Pressure Transducer
Resolution
+/-0.33% FS Over Full Pressure Transducer Range
Number of Tank Types
Number of Tanks per Tank Type
Support for Irregularly Shaped
Tanks
16
16
Yes
Fuel, Fresh Water, Waste water, Live well, Oil, etc.
16 Tanks per Tank Type Numbered 0-15
Can be Calibrated for any Shape Tank
Programmable Tank Capacity
Yes
Allows Displays to Calculate Amount Remaining
Specifications (Pressure/Vacuum Mode)
Parameter
Value
Comment
Accuracy
+/-1% FS
Exclusive of Pressure Transducer
Resolution
+/-0.33% FS Over Full Pressure Transducer Range
Number of Pressure Source Types
21 Water Pressure, Atmospheric Pressure, Compressed Air
Pressure, Hydraulic Pressure, Steam Pressure, 16 User
Defined Sources
Certifications
Parameter
Comment
NMEA 2000
Level A
Maritime Navigation and Radiocommunication Equipment & Systems
Maritime Navigation and Radiocommunication Equipment & Systems
FCC and CE Mark
IEC 61162-3
Tested to IEC 60945
Electromagnetic Compatibility
NMEA 2000® Parameter Group Numbers (PGNs) - See Appendix A for Details
Description
PGN #
PGN Name
Default Rate
Periodic Data PGNs
127505 Fluid Level
130314 Actual Pressure
0.4 Times/Second
0.5 Times/Second
Response to Requested PGNs
Protocol PGNs
126464 PGN List (Transmit and Receive)
126996 Product Information
126998 Configuration Information
059392 ISO Acknowledge
059904 ISO Request
060928 ISO Address Claim
065240 ISO Address Command
126208 NMEA
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Maretron Proprietary PGNs
128720 Configuration
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Electrical
Parameter
Value
9 to 32 Volts
400mA
8
Comment
Operating Voltage
DC Voltage
Power Consumption
Load Equivalence Number (LEN)
Reverse Battery Protection
Load Dump Protection
Maximum Current Drain
NMEA 2000® Spec. (1LEN = 50mA)
Indefinitely
Yes
Yes
Energy Rated per SAE J1113
Mechanical
Parameter
Size
Value
3.50” x 4.20” x 2.03”
Comment
Including Flanges for Mounting
(88.9mm x 106.7mm x 51.6mm)
Weight
13 oz. (368.5 g)
Environmental
Parameter
Value
Exposed
IP64
IEC 60945 Classification
Degree of Protection
Operating Temperature
Storage Temperature
Relative Humidity
-25°C to 55°C
-40°C to 70°C
93%RH @40° per IEC60945-8.2
Vibration
Solar Radiation
2-13.2Hz @ ±1mm, 13.2-100Hz @ 7m/s2 per IEC 60945-8.7
Ultraviolet B, A, Visible, and Infrared per IEC 60945-8.10
Corrosion (Salt Mist)
Electromagnetic Emission
Electromagnetic Immunity
Safety Precautions
4 times 7days @ 40°C, 95%RH after 2 hour Salt Spray Per IEC 60945-8.12
Conducted and Radiated Emission per IEC 60945-9
Conducted, Radiated, Supply, and ESD per IEC 60945-10
Dangerous Voltage, Electromagnetic Radio Frequency per IEC 60945-12
7 Technical Support
If you require technical support for Maretron products, you can reach us in any of the following
ways:
Telephone: 1-866-550-9100
Fax: 1-602-861-1777
E-mail: [email protected]
Mail: Maretron, LLP
Attn: Technical Support
9014 N. 23rd Ave Suite 10
Phoenix, AZ 85021 USA
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®
8 Installation Template
Please check the dimensions before using the following diagram as a template for drilling the
mounting holes because the printing process may have distorted the dimensions.
Figure 10 – Mounting Surface Template
Revision 1.3
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FPM100 User’s Manual
9 Maretron (2 Year) Limited Warranty
Maretron warrants the FPM100 to be free from defects in materials and workmanship for two (2) years from the
date of original purchase. If within the applicable period any such products shall be proved to Maretron’s
satisfaction to fail to meet the above limited warranty, such products shall be repaired or replaced at Maretron’s
option. Purchaser's exclusive remedy and Maretron’s sole obligation hereunder, provided product is returned
pursuant to the return requirements below, shall be limited to the repair or replacement, at Maretron’s option, of
any product not meeting the above limited warranty and which is returned to Maretron; or if Maretron is unable to
deliver a replacement that is free from defects in materials or workmanship, Purchaser’s payment for such
product will be refunded. Maretron assumes no liability whatsoever for expenses of removing any defective
product or part or for installing the repaired product or part or a replacement therefore or for any loss or damage
to equipment in connection with which Maretron’s products or parts shall be used. With respect to products not
manufactured by Maretron, Maretron’s warranty obligation shall in all respects conform to and be limited to the
warranty actually extended to Maretron by its supplier. The foregoing warranties shall not apply with respect to
products subjected to negligence, misuse, misapplication, accident, damages by circumstances beyond
Maretron’s control, to improper installation, operation, maintenance, or storage, or to other than normal use or
service.
THE FOREGOING WARRANTIES ARE EXPRESSLY IN LIEU OF AND EXCLUDES ALL OTHER EXPRESS OR
IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR PURPOSE.
Statements made by any person, including representatives of Maretron, which are inconsistent or in conflict with
the terms of this Limited Warranty, shall not be binding upon Maretron unless reduced to writing and approved by
an officer of Maretron.
IN NO CASE WILL MARETRON BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, DAMAGES
FOR LOSS OF USE, LOSS OF ANTICIPATED PROFITS OR SAVINGS, OR ANY OTHER LOSS INCURRED
BECAUSE OF INTERRUPTION OF SERVICE. IN NO EVENT SHALL MARETRON’S AGGREGATE LIABILITY
EXCEED THE PURCHASE PRICE OF THE PRODUCT(S) INVOLVED. MARETRON SHALL NOT BE SUBJECT
TO ANY OTHER OBLIGATIONS OR LIABILITIES, WHETHER ARISING OUT OF BREACH OF CONTRACT OR
WARRANTY, TORT (INCLUDING NEGLIGENCE), OR OTHER THEORIES OF LAW WITH RESPECT TO
PRODUCTS SOLD OR SERVICES RENDERED BY MARETRON, OR ANY UNDERTAKINGS, ACTS OR
OMISSIONS RELATING THERETO.
Maretron does not warrant that the functions contained in any software programs or products will meet
purchaser’s requirements or that the operation of the software programs or products will be uninterrupted or error
free. Purchaser assumes responsibility for the selection of the software programs or products to achieve the
intended results, and for the installation, use and results obtained from said programs or products. No
specifications, samples, descriptions, or illustrations provided Maretron to Purchaser, whether directly, in trade
literature, brochures or other documentation shall be construed as warranties of any kind, and any failure to conform
with such specifications, samples, descriptions, or illustrations shall not constitute any breach of Maretron’s limited
warranty.
Warranty Return Procedure:
To apply for warranty claims, contact Maretron or one of its dealers to describe the problem and determine the
appropriate course of action. If a return is necessary, place the product in its original packaging together with
proof of purchase and send to an Authorized Maretron Service Location. You are responsible for all shipping and
insurance charges. Maretron will return the replaced or repaired product with all shipping and handling prepaid
except for requests requiring expedited shipping (i.e. overnight shipments). Failure to follow this warranty return
procedure could result in the product’s warranty becoming null and void.
Maretron reserves the right to modify or replace, at its sole discretion, without prior notification, the warranty listed
above. To obtain a copy of the then current warranty policy, please go to the following web page:
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®
Appendix A – NMEA 2000® Interfacing
FPM100 NMEA 2000® Periodic Data Transmitted PGNs
PGN 130314 – Actual Pressure
The FPM100 uses this PGN to provide a regular transmission of various pressures. The
factory default for periodic transmission rate is once every two seconds. The transmission of
this PGN can be disabled (see PGN 126208 – NMEA Request Group Function – Transmission
Periodic Rate).
Field 1:SID – The sequence identifier field is used to tie related PGNs together. For example,
the FPM100 will transmit identical SIDs for 130312 (Temperature) and 130311
(Environmental Parameters) to indicate that the readings are linked together (i.e.,
the data from each PGN was taken at the same time although they are reported at
slightly different times).
2: Pressure Instance – The FPM100 sets this field to identify a particular pressure
measurement from the source specified in Field 3. Every pressure measurement
from a given source type on the network should have a distinct instance value, so
that monitoring devices and displays can identify which measurement is which.
3: Pressure Source – This field is used to indicate the type of pressure measurement
being taken. Possible values for this field include Atmospheric Pressure, Water
Pressure, Steam Pressure, Compressed Air Pressure, Hydraulic Pressure, and 16
User Defined pressure sources.
4: Pressure – This field is used to indicate the pressure, whose source is specified in
field 2, in units of 0.1 Pa.
6: Reserved bits – The FPM100 sets all bits in this field to a value of “1”.
PGN 127505 – Fluid Level
The FPM100 uses this PGN to indicate the attached tank’s fluid instance, fluid type, fluid level,
and tank capacity.
Field 1: Fluid Instance – This field is used to identify the tank number and ranges between 0
and 15. There can be up to 16 tanks of a given type as defined by the Fluid Type
field. This field is programmable through the NMEA command PGN. The FPM100
ships from the factory with a default value of zero.
2: Fluid Type – This field identifies the type of fluid contained within the tank. Currently
the defined fluid types are fuel, fresh water, wastewater, live well, oil, and black
water. This field is programmable through the NMEA command PGN. The FPM100
ships from the factory with a default value of 0x0 indicating “Fuel”.
3: Fluid Level – This field is used to indicate the current fluid level in percentage. The
value transmitted in this field depends on the distance from the sender to the top of
the fluid or tank bottom.
4: Tank Capacity – This field is used to indicate the tank capacity. This field is
programmable through the NMEA command PGN. The FPM100 ships from the
factory with a default value of 0xFFFFFFFF indicating “Data Not Available”.
5: Reserved – This field is reserved by NMEA; therefore, the FPM100 sets all bits to a
logic 1.
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Appendix A – NMEA 2000® Interfacing
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