®
TLM150
Gasoline Tank Level Monitor
User’s Manual
Revision 1.2
Copyright © 2010 Maretron, LLP All Rights Reserved
Maretron, LLP
9014 N. 23rd Ave #10
Phoenix, AZ 85021
Maretron Manual Part #: M002301
Revision 1.2
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Table of Contents
1.1 Introduction....................................................................................................................1
1.3 Firmware Revision.........................................................................................................1
1.6 Quick Install ...................................................................................................................2
Installation............................................................................................................................2
2.2 Theory of Operation.......................................................................................................2
2.3.1 Effect of Pitch and Roll on the TLM150...............................................................4
2.4 Mounting the TLM150....................................................................................................4
2.4.1 Mounting the TLM150 Sensor Component .........................................................4
2.4.2 Mounting the TLM150 Interface Component.......................................................9
2.5.1 Connecting to NMEA 2000® Interface.................................................................9
3.3.1 Tank Depth Programming.................................................................................11
3.3.2 Custom Calibration............................................................................................11
Maretron (2 Year) Limited Warranty...................................................................................16
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Table of Figures
Figure 1 – TLM150 Mounting – SAE 5-Hole Bolt Pattern .......................................................... 5
Figure 2 – Mounting TLM150 to SAE 5-Hole Tank with Focus Tube......................................... 6
Figure 3 – TLM150 Mounting With Threaded Adapter............................................................... 7
Figure 4 – Mounting TLM150 with Focus Tube on Threaded Tank Fitting................................. 8
Figure 6 – NMEA 2000® Connector Face Views ..................................................................... 10
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 Tank Level Monitor (TLM150). Maretron has
designed and built your monitor to the highest standards for years of reliable, dependable, and
accurate service.
The TLM150 is used to sense levels of gasoline tanks using ultrasonic technology and transmit
the gasoline levels over the NMEA 2000® network. This allows you to observe gasoline tank
levels anywhere on the vessel where there is an NMEA 2000® compatible display such as the
Maretron DSM250. The TLM150 is capable of sensing gasoline tanks up to 24” (0.61m) in
depth. It must be used only for tanks containing gasoline. Unlike most tank senders that only
work with rectangular tanks, the TLM150 can be calibrated for irregular tank shapes so you
know the true level of your tanks. The TLM150 can be mounted on tanks with a SAE J1810 5-
hole mounting pattern, or to tanks using 1.5” NPT or 1.25” BSP threaded openings via
available adapters. The TLM150 has an optional focus tube to allow use on boats with planing
hulls when the vessel spends a significant amount of time with the bow pitched up.
The Maretron TLM150 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 TLM150 in order to
ensure optimal performance.
1.2 Gasoline Tanks
The TLM150 is ONLY intended for use in tanks containing gasoline. Do not use the TLM150
in tanks containing diesel fuel, water, oil, or other liquids. Use in tanks containing other liquids
will result in inaccurate readings.
1.3 Firmware Revision
This manual corresponds to TLM150 firmware revision 1.1.5.
1.4 Features
The Maretron TLM150 has the following features:
• Transmits liquid levels over an NMEA 2000® Interface
• Integrated ultrasonic level sensor
• Can be used in tanks up to 24” (0.61m) deep
• SAE J1810 5-hole, 1.5” NPT, or 1.25” BSP Mounting
• Accommodates Irregularly Shaped Tanks with 16 Point Calibration
• Tank Type: Fuel (Gasoline only)
• Programmable Tank Number(s) Up to 16 per Tank Type
• Programmable Tank Capacity
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1.5 TLM150 Accessories
Maretron offers the following accessories for the TLM150:
• TA-5H-1.5NPT
• TA-5H-1.25BSP
• TFT-5H
• TFT-1.5NPT
• TFT-1.25BSP
1.5” NPT Displacement Hull Tank Adapter
1.25” BSP Displacement Hull Tank Adapter
SAE 5-Bolt Pattern Non-Displacement Hull Focus Tube
1.5” NPT Non-Displacement Hull Focus Tube
1.25” BSP Non-Displacement Hull Focus Tube
1.6 Quick Install
Installing the Maretron TLM150 involves the following steps. Please refer to the individual
sections for additional details.
7. Configure for Tank Depth and Shape
2 Installation
2.1 Unpacking the Box
When unpacking the box containing the Maretron TLM150, you should find the following items:
• 1 – TLM150 Tank Level Monitor
• 1 – TLM150 Gasket
• 1 – TLM150 User’s Manual
• 1 – Warranty Registration Card
If any of these items are missing or damaged, please contact Maretron.
2.2 Theory of Operation
The TLM150 operates by directing a pulse of ultrasonic sound from the sensor component at
the top of the tank down to the surface of the liquid in the tank. The TLM150 then measures
the time it takes this pulse to travel down to the surface of the liquid, be reflected back up, and
then be received back at the sensor component. Using the speed of sound, it uses this time to
calculate the distance between the face of the sensor component and the surface of the liquid
(or the tank bottom if the tank is empty). The cone width of the beam transmitted by the
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emitted and received by the TLM150.
Please note that due to limitations of ultrasonic technology, the minimum depth that can be
measured by the TLM150 is 2” (5.08cm).
Figure 1 - TLM150 Operation
2.3 Choosing a Mounting Location
The primary function of the TLM150 is to sense levels of gasoline in tanks using ultrasonic
technology and transmit this information over NMEA 2000® network so that gasoline fuel tank
level information can be viewed anywhere on the vessel where there is an NMEA 2000®
compatible display.
The TLM150 tank level monitor consists of two parts: 1) the sensor, which mounts onto the top
of the tank and contains the ultrasonic level measurement components, and 2) the interface,
which converts the measured data into NMEA 2000® format and transmits the data over the
NMEA 2000® network.
The interface component of the TLM150 may be mounted anywhere, subject to the length of
the cable connecting it to the sensor component.
The sensor component of the TLM150 must be mounted on the tank whose level is to be
monitored. Choosing a proper mounting location for the sensor component of the TLM150 is
critical to obtaining accurate tank level readings. For best results, please follow these
recommendations:
• The sensor component of the TLM150 must be mounted flat, so that the round
transceiver portion of the TLM150 faces straight downward.
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• The sensor component of the TLM150 must be mounted over the deepest part of
the tank, in order to obtain accurate depth readings when the tank is empty or
near empty.
• In order to obtain accurate readings when the tank is empty, the tank bottom
directly under the TLM150 must be both smooth and flat, so that the ultrasonic
sound waves transmitted by the sender are reflected back to the sender for
measurement. If the tank bottom under the TLM150 is sloped, grooved, or rough,
then the TLM150 may not report an accurate level reading (or any level reading
at all) when the tank is empty.
• The area below the sensor component of the TLM150 must be free of obstruction
from tank baffles or return lines that might reflect ultrasonic waves back towards
the sensor component, causing inaccurate depth readings.
• The sensor component of the TLM150 must be mounted away from the tank
walls, so that reflections from the tank walls do not cause inaccurate depth
readings.
• For a flat bottom tank, the mounting hole in the top of the tank through which the
TLM150 measures fluid level should be located as close to the center of the tank,
both front-to-back and side-to-side, as possible. This will ensure maximum
accuracy of reading in the event that the vessel experiences pitch and roll.
2.3.1 Effect of Pitch and Roll on the TLM150
Assuming that the TLM150 sensor component is mounted on a flat tank top, the TLM150 will
operate correctly as long as the vessel does not experience pitch and/or roll in excess of 6° for
an extended period of time. This can occur on a sailboat when the boat is heeled over, or on a
powerboat with a non-displacement (planing) hull. Temporary pitch and roll due to wave
motion and will not adversely affect tank level readings.
If you are in a sailing vessel or a powerboat with a non-displacement hull and will experience
pitch and/or roll in excess of 6° for an extended period of time, you can install a Non-
ordering information). This is a tube which mounts into the tank before the sensor and directs
the ultrasonic waves down to the surface of the liquid and back. With a focus tube, the
TLM150 will operate correctly as long as the vessel does not exceed 15° of pitch and/or roll for
extended periods of time.
2.4 Mounting the TLM150
2.4.1 Mounting the TLM150 Sensor Component
The TLM150 comes from the factory ready to mount on a tank with the standard SAE J1810 5-
Hole mounting pattern. Maretron offers adapters to allow mounting the TLM150 on a tank with
a 1.5” NPT connection or a 1.25” BSP connection.
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WARNING
• Gasket installs only one way and must be properly aligned to the
tank and sensor for proper operation
• Use only supplied gasket – other gaskets may obstruct and
render device inoperative – do not use silicone sealant around
the gasket
• Use only Maretron adapters – others may have wrong diameter,
rendering device inoperative
• Tank must have no obstructions within 6° beam angle (for
example baffles, clean outs, fill or vent pipes
• Tighten the bolts mounting the TLM150 to a torque of 10-15 in-lbs
(1.1-1.7 N·m). Over torquing the mounting bolts can result in
erratic or inaccurate depth readings
2.4.1.1 Installation on a Tank with a SAE J1810 5-Bolt Fitting
To install the TLM150 on a tank with a SAE J1850 5-bolt fitting, place the gasket over the tank
fitting so that the bolt holes line up (WARNING – the gasket must be properly aligned; it only
fits one way). Place the TLM150 sensor component over the gasket so that the bolt holes line
up. Insert the mounting bolts through the TLM150 sensor component and gasket into the tank
fitting (the tank fitting may instead have studs installed, so in this case, install the nuts over the
studs), and tighten them to a torque of 10-15 in-lbs (1.1-1.7 N·m). Do not use threadlocking
compounds containing methacrylate ester, such as Loctite Red (271), as they will cause stress
cracking of the plastic enclosure.
Mounting Screws (x5)
TLM150 Sensor Component
TLM150 Gasket
SAE 5-Bolt Tank Fitting
TLM150 Interface Component
Figure 2 – TLM150 Mounting – SAE 5-Hole Bolt Pattern
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2.4.1.2 Installation on a Tank with a SAE J1810 5-Bolt Fitting and Focus Tube
If a focus tube is used for a tank with a SAE J1810 5-bolt fitting, determine the depth of the
tank at the location of the tank sensor mounting hole and use a saw with a metal-cutting blade
to trim the focus tube so that it reaches 1” above the tank bottom when mounted. Remove any
burrs from the end of the focus tube after trimming.
Next, place the gasket included with the focus tube over the focus tube (between the focus
tube flange and the tank mounting flange), and then drop the focus tube into the hole so that
the bolt holes on the focus tube, focus tube gasket, and tank fitting all line up (WARNING – the
gasket must be properly aligned; it only fits one way).
Place the gasket included with the TLM150 over the focus tube so that the bolt holes line up
(WARNING – the gasket must be properly aligned; it only fits one way), then place the TLM150
sensor component on top of the TLM150 gasket so that the bolt holes line up.
Insert mounting screws into the bolt holes on the TLM150 sensor component, and thread them
into the tank fitting (the tank fitting may instead have studs installed, so in this case, install the
nuts over the studs), tightening them to a torque of 10-15 in-lbs (1.1-1.7 N·m). Do not use
threadlocking compounds containing methacrylate ester, such as Loctite Red (271), as they
will cause stress cracking of the plastic enclosure.
Mounting Screws (x5)
TLM150 Sensor Component
TLM150 Gasket
Focus Tube
Focus Tube Gasket
SAE 5-Bolt Tank Fitting
TLM150 Interface Component
1” (2.54cm) clearance
between focus tube and
tank bottom
Figure 3 – Mounting TLM150 to SAE 5-Hole Tank with Focus Tube
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2.4.1.3 Installation on a Tank with a 1.25”BSP or 1.5”NPT Threaded Tank Fitting
For a threaded tank sender mounting hole, first thread the adapter into the tank opening and
tighten to a torque of 3-5 ft-lbs (4.1-6.8 N·m).
Next, place the TLM150 gasket over the adapter so that the bolt holes on the gasket line up
with the bolt holes on the adapter (WARNING – the gasket must be properly aligned; it only fits
one way). Place the TLM150 sensor component on top of the adapter so that the bolt holes on
the TLM150 sensor component line up with the bolt holes on the adapter.
Place the included mounting screws through the bolt holes on the TLM150 sensor component,
and thread them into the adapter, tightening them to a torque of 10-15 in-lbs (1.1-1.7 N·m). Do
not use threadlocking compounds containing methacrylate ester, such as Loctite Red (271), as
they will cause stress cracking of the plastic enclosure.
Mounting Screws (x5)
TLM150 Sensor Component
TLM150 Gasket
Threaded Adapter
Threaded Tank Fitting
TLM150 Interface Component
Figure 4 – TLM150 Mounting With Threaded Adapter
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2.4.1.4 Installation on a Tank with a 1.25”BSP or 1.5”NPT Threaded Tank Fitting and
Focus Tube
If a focus tube is used for a tank with a SAE J1810 5-bolt fitting, determine the depth of the
tank at the location of the tank sensor mounting hole and use a saw with a metal-cutting blade
to trim the focus tube so that it reaches 1” above the tank bottom when mounted. Remove any
burrs from the end of the focus tube after trimming.
For a threaded tank sender mounting hole, first thread the adapter into the tank opening and
tighten to a torque of 3-5 ft-lbs (4.1-6.8 N·m).
Next, place the TLM150 gasket over the adapter so that the bolt holes on the gasket line up
with the bolt holes on the adapter (WARNING – the gasket must be properly aligned; it only fits
one way). Place the TLM150 sensor component on top of the adapter so that the bolt holes on
the TLM150 sensor component line up with the bolt holes on the adapter.
Place the included mounting screws through the bolt holes on the TLM150 sensor component,
and thread them into the adapter, tightening them to a torque of 10-15 in-lbs (1.1-1.7 N·m). Do
not use threadlocking compounds containing methacrylate ester, such as Loctite Red (271), as
they will cause stress cracking of the plastic enclosure.
Mounting Screws
TLM150 Sensor Component
TLM150 Gasket
Threaded Focus Tube
Threaded Tank Fitting
TLM150 Interface Component
1” (2.54cm) clearance
between focus tube and
tank bottom
Figure 5 – Mounting TLM150 with Focus Tube on Threaded Tank Fitting
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2.4.2 Mounting the TLM150 Interface Component
The actual mounting of the TLM150 interface component is not critical and the unit can be
mounted in any orientation. The TLM150, NMEA 2000® connector, and cable are all
waterproof (rated IP67 – protected against temporary immersion in water) so you can mount
the unit virtually anywhere. Once you have located a suitable mounting location, you can
secure the TLM150 interface component by placing wire ties with screw eyes on the attached
cables next to the TLM150 interface component. Do not use threadlocking compounds
containing methacrylate ester, such as Loctite Red (271), as they will cause stress cracking of
the plastic enclosure.
2.5 Connecting the TLM150
Cable to
Sensor
NMEA 2000
Connector
Component
Figure 6 – TLM150 Connections
2.5.1 Connecting to NMEA 2000® Interface
The Maretron TLM150 provides a connection to an NMEA 2000® interface through a five pin
Maretron NMEA 2000® cable (or an NMEA 2000® compatible cable) by connecting the female
end of the cable to the TLM150 (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 TLM150 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 7 – NMEA 2000® Connector Face Views
3 Configuring the TLM150
The TLM150 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 TLM150 appropriately.
rectangular cross-section with full at 2” (5.08cm) distance from the sender and empty at
24” (0.61m) distance from the sender
Note on Tank Type:
As shipped from the factory, the TLM150 transmits the tank type as “Fuel”. Since the TLM150
is designed only for tanks containing gasoline, the tank type is not changeable by the user.
3.1 Configuring Tank Number
As shipped from the factory, the TLM150 transmits the Tank Number as “0”. The TLM150
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. The TLM150 is configured or programmed by choosing a
TLM150 tank number using a display product such as the Maretron DSM250 or Maretron
N2KAnalyzer software. Refer to the user’s manual of the particular product that will be used for
configuring the TLM150 as these manuals provide detailed instruction on configuration
procedures.
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3.2 Configuring Tank Capacity
In addition to indicating the gasoline level within a tank, the TLM150 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 gasoline remaining anywhere on the vessel where
there is an NMEA 2000® compatible display. It is not required, but you can enter the TLM150
tank capacity using a display product such as the Maretron DSM250 or Maretron N2KAnalyzer
software. Refer to the user’s manual of the particular product that will be used for configuring
the TLM150 as these manuals provide detailed instruction on configuration procedures.
3.3 Tank Depth or Custom Calibration
The TLM150 can be easily programmed for use with tanks of rectangular cross-section (see
3.3.1 Tank Depth Programming
The TLM150 can be used with tanks that have rectangular cross sections. The TLM150 comes
from the factory programmed for a 24” (0.61m) deep tank. In order to obtain correct level
readings on a tank having a rectangular cross section but shallower than 24” (0.61m), you
must program the TLM150 with the actual depth of the tank using a display product such as
the Maretron DSM250 or Maretron N2KAnalyzer software. Refer to the user’s manual of the
particular product that will be used for configuring the TLM200 as these manuals provide
detailed instruction on configuration procedures.
3.3.2 Custom Calibration
For accurate tank level readings, the TLM150 must be custom calibrated if the tank shape is
irregular or non-rectangular.
You can calibrate the TLM150 using a display product such as the Maretron DSM250 or
Maretron N2KAnalyzer software. Refer to the user’s manual of the particular product that will
be used for configuring the TLM150 as these manuals provide detailed instruction on
configuration procedures.
4 Maintenance
Regular maintenance is not required; however, an occasional inspection will ensure continued
proper operation of the Maretron TLM150. 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 TLM150 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.
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5 Troubleshooting
If you notice unexpected operation of the Maretron TLM150, follow the troubleshooting
procedures in this section to remedy simple problems.
Symptom
No tank level
output
Troubleshooting Procedure
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.
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).
4. Remove the TLM150 sensor component from the tank opening and
ensure that the surface of the ultrasonic sensor is not fouled.
Inaccurate tank 1. If operating with a rectangular tank, ensure that the tank depth is
level output
2. If using custom calibration, re-calibrate the TLM150 (see Section
3.3.2).
3. Ensure that the tank contains gasoline. Gasoline vapors must be
present in the tank in order for depth readings to be accurate. If you
have another fluid type, please use the Maretron TLM100 or TLM200
tank level monitors.
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Symptom
Erratic
Readings
Troubleshooting Procedure
1. Remove the sender and place it on top of a standard paper towel roll
core. Be sure the towel core is on a hard surface. Reset the unit to
factory defaults using either a DSM250 display or N2KAnalyzer.
Power the unit up and wait for two minutes. The tank level value
should read 65-75% (this number can vary depending on the paper
towel roll dimensions). If you see a depth reading in this range, the
sensor is operational, so please follow the next steps in this
sequence.
2. Determine if the sensor’s gasket is installed properly. Only a Maretron
TLM150 gasket should be used. The TLM150 is not compatible with
cork gaskets, silicone sealant, or metal fittings. The gasket only lines
up a single way. A clear line of sight should be observed through all of
the mounting holes with the gasket installed.
3. The TLM150 transmits sensor signals at a 6° angle. Think of the
signal path as a cone getting progressively wider the deeper the tank
is. There must not be any obstructions within this cone like baffles,
return lines or clean out pipes.
4. Sloped or grooved tank bottoms will cause an issue with a signal
return when the tank is empty, causing the TLM150 to transmit an
inaccurate or erratic reading or no reading at all. As long as there is
some fluid providing a flat surface to reflect the signal, you should
receive a valid reading.
Figure 8 – Troubleshooting Guide
If these steps do not solve your problem, please contact Maretron Technical Support (refer to
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6 Technical Specifications
Specifications
Parameter
Value
±2%
Comment
Accuracy
Resolution
±1%
Number of Tank Types
Number of Tanks per Tank Type
Maximum Tank Depth
Minimum Depth Reading
Support for Irregularly Shaped
Tanks
1
16
Fuel (Gasoline only)
16 Tanks per Tank Type Numbered 0-15
24” (0.61m)
2” (5.08cm) Sensor Deadband
Yes
Can be Calibrated for any Shape Tank
Programmable Tank Capacity
Maximum Tank Angle
Yes
6°
Allows Displays to Calculate Amount Remaining
Without focus tube
15°
With focus tube
Certifications
Parameter
Comment
NMEA 2000
Level B+
Maritime Navigation and Radiocommunication Equipment & Systems
FCC and CE Mark
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
0.4 Times/Second
Response to Requested 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
Protocol PGNs
Electrical
Parameter
Value
Comment
Operating Voltage
9 to 16 Volts
DC Voltage
Power Consumption
Load Equivalence Number (LEN)
Reverse Battery Protection
Load Dump Protection
<100mA
2
Average Current Drain
NMEA 2000® Spec. (1LEN = 50mA)
Indefinitely
Yes
Yes
Energy Rated per SAE J1113
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Mechanical
Parameter
Value
3.9”” x 1.2” x 1.0”
(99mm x 30.5mm x
25.4mm)
Comment
Interface Component
Size
2.7” dia. X 0.9”
(68.6mm dia. x 22.9mm)
8.5” (215.9mm)
12 oz. (340g)
Sensor Component
Interconnecting Cable
Weight
Mounting
SAE J1810 5-hole bolt Can mount to 1.25” BSP or 1.5” NPT using
pattern
available adapters
Environmental
Parameter
Value
Exposed
IP67
IEC 60945 Classification
Degree of Protection
Operating Temperature
Storage Temperature
Relative Humidity
Vibration
Rain and Spray
Solar Radiation
-25°C to 55°C
-40°C to 70°C
93%RH @40° per IEC60945-8.2
2-13.2Hz @ ±1mm, 13.2-100Hz @ 7m/s2 per IEC 60945-8.7
12.5mm Nozzle @ 100liters/min from 3m for 30min per IEC 60945-8.8
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: support@maretron.com
Mail: Maretron, LLP
Attn: Technical Support
9014 N. 23rd Ave Suite 10
Phoenix, AZ 85021 USA
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8 Maretron (2 Year) Limited Warranty
Maretron warrants the TLM150 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:
Page 16
Revision 1.2
®
Appendix A – NMEA 2000® Interfacing
TLM150 NMEA 2000® Periodic Data Transmitted PGNs
PGN 127505 – Fluid Level
The TLM150 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 TLM150
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. The TLM150 ships from the factory with a fixed 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 TLM150 ships from the
factory with a default value of 0xFFFFFFFF indicating “Data Not Available”.
5: Reserved – This field is reserved by NMEA; therefore, the TLM150 sets all bits to a
logic 1.
Revision 1.2
Appendix A – NMEA 2000® Interfacing
Page A1
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