® 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 http://www.maretron.com Maretron Manual Part #: M002301 Revision 1.
TLM150 User’s Manual Revision History Revision Description 1.0 Original document 1.1 Corrected typo in NMEA 2000 protocol PGN list Corrected maximum depth in specification table 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 Page ii Revision 1.
® Table of Contents 1 2 3 4 5 6 7 8 General ................................................................................................................................1 1.1 Introduction ....................................................................................................................1 1.2 Gasoline Tanks ..............................................................................................................1 1.3 Firmware Revision .............................................
TLM150 User’s Manual 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 5 – TLM150 Connections .....
® 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.
TLM150 User’s Manual 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.
® TLM150 sensor component is 6°. Please refer to Figure 1 below for a diagram of the waves 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.
TLM150 User’s Manual • • • • • 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.
® 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
TLM150 User’s Manual 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.
® 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).
TLM150 User’s Manual 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.
® 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.
TLM150 User’s Manual 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. 1. Tank Number (Section 3.1) – Default is Tank 0 2. Tank Capacity (Section 3.2) – Default is No Tank Capacity Transmitted 3. Tank Depth or Custom Calibration (Section 3.
® 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.
TLM150 User’s Manual 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 1. 2. 3. 4. Inaccurate tank level output 1. 2. 3. Page 12 Troubleshooting Procedure If operating in the NMEA 2000® Mode, check the connection to the NMEA 2000® interface (see Section 2.5.1) and tighten if necessary. Ensure that power is supplied to the NMEA 2000® network.
® Symptom Erratic Readings 1. 2. 3. 4. Troubleshooting Procedure 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).
TLM150 User’s Manual 6 Technical Specifications Specifications Parameter Accuracy Resolution Number of Tank Types Number of Tanks per Tank Type Maximum Tank Depth Minimum Depth Reading Support for Irregularly Shaped Tanks Programmable Tank Capacity Maximum Tank Angle Value ±2% ±1% 1 16 24” (0.61m) 2” (5.
® Mechanical Parameter Value 3.9”” x 1.2” x 1.0” (99mm x 30.5mm x 25.4mm) 2.7” dia. X 0.9” (68.6mm dia. x 22.9mm) 8.5” (215.9mm) 12 oz. (340g) SAE J1810 5-hole bolt pattern Size Weight Mounting Comment Interface Component Sensor Component Interconnecting Cable Can mount to 1.25” BSP or 1.
TLM150 User’s Manual 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.
® 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.
