TLM200

Tank Level Monitor

 

User’s Manual

 

 

 

Revision 1.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Copyright © 2015 Maretron, LLP All Rights Reserved

 

Maretron, LLP

9014 N. 23rd Ave #10

Phoenix, AZ 85021

http://www.maretron.com

 

 

Maretron Manual Part #: M002401

Revision History

 

Revision

Description

1.0

Original document

1.1

Removed all references to airlocks

Corrected typo in NMEA Protocol PGN list

1.2

Added documentation on mounting locations and theory of operation

Corrected torque specifications

Added prohibition of red Loctite threadlocking compound and cleaning agents containing acetone

Updated troubleshooting section

Updated referenced firmware version number

Typographical corrections

1.3

Typographical corrections

 


 

Table of Contents

 

1       General 1

1.1  Introduction.. 1

1.2  Gasoline Tanks. 1

1.3  Firmware Revision.. 1

1.4  Features. 1

1.5  TLM200 Accessories. 1

1.6  Quick Install 2

2       Installation.. 2

2.1  Unpacking the Box. 2

2.2  Theory of Operation.. 2

2.3  Choosing a Mounting Location.. 3

2.3.1    Effect of Pitch and Roll on the TLM200. 4

2.4  Mounting the TLM200. 4

2.4.1    Mounting the TLM200 Sensor Component 4

2.4.2    Mounting the TLM200 Interface Component 6

2.5  Connecting the TLM200. 6

2.5.1    Connecting to NMEA 2000® Interface. 7

3       Configuring the TLM200. 7

3.1  Configuring Tank Type. 8

3.2  Configuring Tank Number 8

3.3  Configuring Tank Capacity. 8

3.4  Tank Depth or Custom Calibration.. 9

3.4.1    Tank Depth Programming. 9

3.4.2    Custom Calibration.. 9

4       Maintenance. 9

5       Troubleshooting. 10

6       Technical Specifications. 11

7       Technical Support 12

8       Maretron (2 Year) Limited Warranty. 13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table of Figures

 

Figure 1 - TLM200 Operation.. 3

Figure 2 – TLM200 Mounting – SAE 5-Hole Bolt Pattern.. 5

Figure 3 – TLM200 Mounting With Threaded Adapter 6

Figure 4 – TLM200 Connections. 7

Figure 5 – NMEA 2000® Connector Face Views. 7

Figure 6 – Troubleshooting Guide. 10

 

 

Table of Appendices

 

Appendix A – NMEA 2000® Interfacing............................................................................................. A1

 


1      General

1.1   Introduction

Congratulations on your purchase of the Maretron Tank Level Monitor (TLM200). Maretron has designed and built your monitor to the highest standards for years of reliable, dependable, and accurate service.

 

The TLM200 is used to sense levels of liquid tanks using ultrasonic technology and transmit the liquid levels over the NMEA 2000® network. This allows you to observe tank levels anywhere on the vessel where there is an NMEA 2000® compatible display such as the Maretron DSM250. The TLM200 is capable of sensing tanks up to 104” (2.64m) in depth. It can be used for diesel, fresh water, grey water, black water, and oil tanks. Unlike most tank senders that only work with rectangular tanks, the TLM200 can be calibrated for irregular tank shapes so you know the true level of your tanks. The TLM200 can be mounted on tanks with a SAE J1810 5-hole mounting pattern, or to tanks using 1.5” NPT threaded openings via an available adapter.

 

The Maretron TLM200 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 TLM200 in order to ensure optimal performance.

 

1.2   Gasoline Tanks

The TLM200 is NOT intended for use in tanks containing gasoline.  Use in tanks containing gasoline will void the product warranty.

 

1.3   Firmware Revision

This manual corresponds to TLM200 firmware revision 1.1.5.

 

1.4   Features

The Maretron TLM200 has the following features:

 

·    Transmits liquid levels over an NMEA 2000® Interface

·    Integrated ultrasonic level sensor

·    Can be used in tanks up to 104” (2.64m) deep

·    SAE J1810 5-hole or 1.5” NPT Mounting

·    Accommodates Irregularly Shaped Tanks with 16 Point Calibration

·    16 Programmable Tank Types Including Fuel, Fresh Water, Waste Water, Live Well

·    Programmable Tank Number(s) Up to 16 per Tank Type

·    Programmable Tank Capacity

 

1.5   TLM200 Accessories

Maretron offers the following accessories for the TLM200:

 

 

1.6   Quick Install

Installing the Maretron TLM200 involves the following steps. Please refer to the individual sections for additional details.

 

1.    Unpack the Box (Section 2.1)

2.    Choose a Mounting Location (Section 2.3)

3.    Mount the TLM200 (Section 2.4)

4.    Connect the TLM200 (Section 2.5)

5.    Configure or Program the Tank Type (Section 3.1)

6.    Configure or Program the Tank Number (Section 3.2)

7.    Configure or Program Tank Capacity (Section 3.3)

8.    Configure for Tank Depth and Shape

 

2      Installation

2.1   Unpacking the Box

When unpacking the box containing the Maretron TLM200, you should find the following items:

 

·         1 – TLM200 Tank Level Monitor

·         1 – TLM200 Gasket

·         1 – TLM200 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 TLM200 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 TLM200 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 TLM200 sensor component is 6°. Please refer to Figure 1 below for a diagram of the waves emitted and received by the TLM200.

 

Please note that due to limitations of ultrasonic technology, the minimum depth that can be measured by the TLM200 is 6” (15.24cm).

 

TLM200 Operation Flat Tank Mounting.jpg

Figure 1 - TLM200 Operation

2.3   Choosing a Mounting Location

The primary function of the TLM200 is to sense levels of liquid in tanks using ultrasonic technology and transmit this information over NMEA 2000® network so that tank level information can be viewed anywhere on the vessel where there is an NMEA 2000® compatible display.

 

The TLM200 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 TLM200 may be mounted anywhere, subject to the length of the cable connecting it to the sensor component.

 

The sensor component of the TLM200 must be mounted on the tank whose level is to be monitored. Choosing a proper mounting location for the sensor component of the TLM200 is critical to obtaining accurate tank level readings. For best results, please follow these recommendations:

·         The sensor component of the TLM200 must be mounted flat, so that the round transceiver portion of the TLM200 faces straight downward.

·         The sensor component of the TLM200 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 TLM200 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 TLM200 is sloped, grooved, or rough, then the TLM200 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 TLM200 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 TLM200 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 TLM200 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 TLM200

Assuming that the TLM200 sensor component is mounted on a flat tank top, the TLM200 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.

 

2.4   Mounting the TLM200

 

2.4.1     Mounting the TLM200 Sensor Component

The TLM200 comes from the factory ready to mount on a tank with the standard SAE J1810 5-Hole mounting pattern.  Maretron offers an adapter to allow mounting the TLM200 on a tank with a 1.5” NPT connection.

 

Warning-Symbol.png

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 TLM200 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

·         Do not attempt to use any type of TLM100 focus tubes with the TLM200 – they may cause erroneous tank level readings

 

2.4.1.1    Installation on a Tank with a SAE J1810 5-Bolt Fitting

To install the TLM200 on a tank with a SAE J1850 5-bolt fitting, place the gasket over the tank fitting so that the bolt holes line up. Place the TLM200 sensor component over the gasket so that the bolt holes line up (WARNING – the gasket must be properly aligned; it only fits one way). Insert the mounting bolts through the TLM200 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.

 

Figure 2 – TLM200 Mounting – SAE 5-Hole Bolt Pattern

 

2.4.1.2    Installation on a Tank with a 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 TLM200 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 TLM200 sensor component on top of the adapter so that the bolt holes on the TLM200 sensor component line up with the bolt holes on the adapter.

 

Place the included mounting screws through the bolt holes on the TLM200 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.

 

 Figure 3 – TLM200 Mounting With Threaded Adapter

 

2.4.2     Mounting the TLM200 Interface Component

The actual mounting of the TLM200 interface component is not critical and the unit can be mounted in any orientation. The TLM200, 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 TLM200 interface component by placing wire ties with screw eyes on the attached cables next to the TLM200 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 TLM200

There is one connection point (see Figure 4) for the TLM200: the NMEA 2000® connection. Please refer to Section 2.5.1 for making NMEA 2000® connection.

 

Figure 4 – TLM200 Connections

 

 

2.5.1  Connecting to NMEA 2000® Interface

The Maretron TLM200 provides a connection to an NMEA 2000® interface through a five pin male connector (see Figure 5). You connect the TLM200 to an 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 TLM200 (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 TLM200 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.

Figure 5 – NMEA 2000® Connector Face Views

 

3      Configuring the TLM200

The TLM200 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 TLM200 appropriately.

 

1.    Tank Type (Section 3.1) – Default is Fuel

2.    Tank Number (Section 3.2) – Default is Tank 0

3.    Tank Capacity (Section 3.3) – Default is No Tank Capacity Transmitted

4.    Tank Depth or Custom Calibration (Section 3.4) – Default is a 104” (2.64m) deep tank with rectangular cross-section with full at 6” (15.24cm) distance from the sender and empty at 104” (2.64m) distance from the sender

 

3.1      Configuring Tank Type

As shipped from the factory, the TLM200 transmits the tank type as “Fuel”. You can reconfigure the TLM200 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 TLM200 tank type 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.

 

3.2      Configuring Tank Number

As shipped from the factory, the TLM200 transmits the Tank Number as “0”. The TLM200 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 TLM200 is configured or programmed by choosing a TLM200 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 TLM200 as these manuals provide detailed instruction on configuration procedures.

 

3.3      Configuring Tank Capacity

In addition to indicating the fluid level within a tank, the TLM200 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 TLM200 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 TLM200 as these manuals provide detailed instruction on configuration procedures.

 

3.4      Tank Depth or Custom Calibration

The TLM200 can be easily programmed for use with tanks of rectangular cross-section (see Section 3.4.1). For non-rectangular tank shapes, you can perform custom calibration so that the TLM200 accurately reflects fluid levels (see Section 3.4.2).

 

3.4.1     Tank Depth Programming

The TLM200 can be used with tanks that have rectangular cross sections. The TLM200 comes from the factory programmed for a 104” (2.64m) deep tank. In order to obtain correct level readings on a tank having a rectangular cross section but shallower than 104”, you must program the TLM200 with the actual depth of the tank using a display product such as the Maretron DSM250 or the 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.

 

3.4.2     Custom Calibration

For accurate tank level readings, the TLM200 must be custom calibrated if the tank shape is irregular or non-rectangular.

 

You can calibrate the TLM200 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.

 

4      Maintenance

Regular maintenance is not required; however, an occasional inspection will ensure continued proper operation of the Maretron TLM200. Perform the following tasks periodically:

 

 

5      Troubleshooting

If you notice unexpected operation of the Maretron TLM200, follow the troubleshooting procedures in this section to remedy simple problems.

 


Symptom

Troubleshooting Procedure

No tank level output

1.    If operating in the NMEA 2000® Mode, check the connection to the NMEA 2000® interface (see Section 2.5.1) and tighten if necessary.

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 TLM200 sensor component from the tank opening and ensure that the surface of the ultrasonic sensor is not fouled.

Inaccurate tank level output

1.    If operating with a rectangular tank, ensure that the tank depth is programmed properly (see Section 3.4.1).

2.    If using custom calibration, re-calibrate the TLM200 (see Section 3.4.2).

Erratic Readings

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 90-96% (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 TLM200 gasket should be used. The TLM200 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 TLM200 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 TLM200 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 6 – Troubleshooting Guide

 

If these steps do not solve your problem, please contact Maretron Technical Support (refer to Section 7 for contact information).

 

6      Technical Specifications

Specifications

Parameter

Value

Comment

Accuracy

±2%

 

Resolution

±1%

 

Number of Tank Types

16

Fuel, Fresh Water, Waste Water, Live Well, Oil, etc.

Number of Tanks per Tank Type

16

16 Tanks per Tank Type Numbered 0-15

Maximum Tank Depth

104” (2.64m)

 

Minimum Depth Reading

6” (15.24cm)

Sensor Deadband

Support for Irregularly Shaped Tanks

Yes

Can be Calibrated for any Shape Tank

Programmable Tank Capacity

Yes

Allows Displays to Calculate Amount Remaining

Maximum Tank Angle

 

 

Certifications

Parameter

Comment

NMEA 2000

Level B+

Maritime Navigation and Radiocommunication Equipment & Systems

Tested to IEC 60945

FCC and CE Mark

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)

N/A

126996

Product Information

N/A

126998

Configuration Information

N/A

Protocol PGNs

059392

ISO Acknowledge

N/A

059904

ISO Request

N/A

060928

ISO Address Claim

N/A

065240

ISO Address Command

N/A

126208

NMEA

N/A

 

Electrical

Parameter

Value

Comment

Operating Voltage

9 to 16 Volts

DC Voltage

Power Consumption

<100mA

Average Current Drain

Load Equivalence Number (LEN)

2

NMEA 2000® Spec. (1 LEN = 50mA)

Reverse Battery Protection

Yes

Indefinitely

Load Dump Protection

Yes

Energy Rated per SAE J1113

 

Mechanical

Parameter

Value

Comment

Size

3.9”” x 1.2” x 1.0”

(99mm x 30.5mm x 25.4mm)

Interface Component

 

2.6” dia. X 2.0”

(66.0mm dia. x 50.8mm)

Sensor Component

 

96” (2.44m)

Interconnecting Cable

Weight

15 oz. (425g)

 

Mounting

SAE J1810 5-hole bolt pattern

Can mount to 1.5” NPT using available adapter

 

Environmental

Parameter

Value

IEC 60945 Classification

Exposed

Degree of Protection

IP67

Operating Temperature

-25°C to 55°C

Storage Temperature

-40°C to 70°C

Relative Humidity

93%RH @40° per IEC60945-8.2

Vibration

2-13.2Hz @ ±1mm, 13.2-100Hz @ 7m/s2 per IEC 60945-8.7

Rain and Spray

12.5mm Nozzle @ 100liters/min from 3m for 30min per IEC 60945-8.8

Solar Radiation

Ultraviolet B, A, Visible, and Infrared per IEC 60945-8.10

Corrosion (Salt Mist)

4 times 7days @ 40°C, 95%RH after 2 hour Salt Spray Per IEC 60945-8.12

Electromagnetic Emission

Conducted and Radiated Emission per IEC 60945-9

Electromagnetic Immunity

Conducted, Radiated, Supply, and ESD per IEC 60945-10

Safety Precautions

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

                                    World Wide Web:     http://www.maretron.com

                                                           Mail:     Maretron, LLP
                                                                        Attn: Technical Support
                                                                        9014 N. 23rd Ave Suite 10
                                                                        Phoenix, AZ 85021 USA


8         Maretron (2 Year) Limited Warranty

 

Maretron warrants the TLM200 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:

http://www.maretron.com/company/warranty.php

 


 

Appendix A – NMEA 2000® Interfacing

 

TLM200 NMEA 2000® Periodic Data Transmitted PGNs

 

PGN 127505 – Fluid Level

The TLM200 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 TLM200 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 TLM200 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 TLM200 ships from the factory with a default value of 0xFFFFFFFF indicating “Data Not Available”.

           5:  Reserved – This field is reserved by NMEA; therefore, the TLM200 sets all bits to a logic 1.