Item #874296

Maretron NMEA 2000 Tank Level Monitor - TLM100-01

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Image of : Maretron NMEA 2000 Tank Level Monitor - TLM100-01 Maretron NMEA 2000 Tank Level Monitor - TLM100-01 Item # 874296


Maretron's TLM100 Tank Level Monitor is used to sense fluid levels of tanks by using ultrasonic technology. Once the TLM100 calculates and transmits the fluid level over the NMEA 2000® network, you can observe tank levels anywhere on the vessel where there is an NMEA 2000® compatible display such as the Maretron DSM250.


  • Capable of sensing fluid levels in tanks up to 40" (1.02m) in depth
  • For use in diesel, fresh water, waste water, black water, and oil tanks (see TLM150 for gasoline tanks or TLM200 for deeper tanks)
  • Can be calibrated for irregular tank shapes so you can know the true fluid level in your tanks
  • 16 Programmable Tank Types Including Fuel, Fresh Water, Waste Water, Live Well
  • Programmable Tank Number(s) up to 16 per tank type
  • Mounted directly to the top of tanks using the industry standard SAE J1810 5-hole mounting pattern
  • May also be mounted to tanks with threaded tank openings using optional adapters that included both a 1.5" NPT and a 1.25" BSP adapter
  • Optional Accessories (sold separately) including:
    • An airlock for black water applications
    • Keeps the face of the ultrasonic transmitter from fouling
    • Optional focus tube to permit use on boats with planing hulls
    • Required if the vessel spends a significant amount of time with the bow pitched up
  • NMEA 2000® certified so you can view any and all tank levels anywhere on the vessel when using a compatible NMEA 2000® display
  • Key component of Maretron's N2KView® vessel monitoring and control system

TLM100 Optional Accessories (Sold Separately):

  • TA-5H-1.25BSP 1.25" BSP Displacement Hull Tank Adapter
  • TA-5H-1.5NPT 1.5" NPT Displacement Hull Tank Adapter
  • TAL-5H SAE 5-Bolt Pattern Black Water Airlock
  • TAL-1.25BSP 1.25" BSP Black Water Airlock
  • TAL-1.5NPT 1.5" NPT Black Water Airlock
  • TFT-5H SAE 5-Bolt Pattern Non-Displacement Hull Focus Tube
  • TFT-1.25BSP 1.25" BSP Non-Displacement Hull Focus Tube
  • TFT-1.5NPT 1.5" NPT Non-Displacement Hull Focus Tube


  • Operating Voltage: 9 to 16V DC Voltage
  • Power Consumption: <100mA Average Current Drain
  • Load Equivalence Number (LEN): 2 [ NMEA 2000® Spec. (1LEN = 50mA)]
  • Reverse Battery Protection: Yes (Indefinitely)
  • Load Dump Protection: Yes (Energy Rated per SAE J1113)


  • Size:
    • 3.9" x 1.2" x 1.0" (99mm x 30.5mm x 25.4mm) Interface Component
    • 2.7" dia. X 0.9" (68.6mm dia. x 22.9mm) Sensor Component
    • 8.5" (215.9mm) Interconnecting Cable
  • Weight: 12 oz. (340g)
  • Mounting: SAE J1810 5-hole bolt pattern Can mount to 1.25" BSP or 1.5" NPT using available adapters


  • 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
  • Electromagnet 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

Kit Includes:

  • (1) TLM100 Tank Level Monitor
  • (1) TLM100 Gasket
  • (1) TLM100 User's Manual
  • (1) Warranty Registration Card

This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm.

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Part Numbers for Maretron NMEA 2000 Tank Level Monitor - TLM100-01

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