General; Introduction; Gasoline Tanks; Firmware Revision - Maretron TLM100-01 User Manual

1 General

1.1 Introduction

Congratulations on your purchase of the Maretron Tank Level Monitor (TLM100). Maretron has
designed and built your monitor to the highest standards for years of reliable, dependable, and
accurate service.
The TLM100 is used to sense levels of liquid tanks using ultrasonic technology and transmit the
liquid levels over the NMEA 2000
the vessel where there is an NMEA 2000
The TLM100 is capable of sensing tanks up to 40" (1.02m) 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 TLM100 can be calibrated for irregular tank shapes so you know the true
level of your tanks. The TLM100 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
TLM100 has an optional airlock for black water applications to keep the face of the ultrasonic
transmitter from fouling, and 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 or in tanks with bottoms
that are not flat below the ultrasonic transmitter.
The Maretron TLM100 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 TLM100 in order to
ensure optimal performance.

1.2 Gasoline Tanks

The TLM100 is NOT intended for use in tanks containing gasoline. Use in tanks containing
gasoline will void the product warranty. For gasoline tank applications, please use the
Maretron TLM100 Gasoline Tank Level Monitor.

1.3 Firmware Revision

This manual corresponds to TLM100 firmware revision 1.1.5.

1.4 Features

The Maretron TLM100 has the following features:
 Transmits liquid levels over an NMEA 2000
 Integrated ultrasonic level sensor
 Can be used in tanks up to 40" (1.02m) deep
 SAE J1810 5-hole, 1.5" NPT, or 1.25" BSP 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
Revision 1.5
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network. This allows you to observe tank levels anywhere on
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compatible display such as the Maretron DSM250.
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Interface
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