Key Performance Features

• Standard SAE 5-Bolt Pattern: Designed to bolt directly into standard fuel or water tank bungs. It acts as the mounting interface between the tank and the TLM100 or TLM150 depth transducer.Signal Isolation: The "Focus Tube" design channels the ultrasonic pulse down a narrow column. This prevents the sensor from accidentally picking up "false echoes" from internal tank baffles, pumps, or uneven tank walls.

• Non-Displacement Optimization: While displacement hulls move smoothly, non-displacement hulls often experience different harmonic vibrations; the TFT-5H is tuned to ensure these movements don't disrupt the sensor's accuracy.

• Corrosion-Resistant Construction: Built from high-grade, fuel-safe materials that are compatible with gasoline, diesel, fresh water, and waste water (black water) applications.

• Vented Design: Features small pressure-equalization vents at the top of the tube to ensure the liquid level inside the tube is identical to the level in the rest of the tank.

Technical Specifications

In The Box

• 1 x Maretron TFT-5H Focus Tube

• 1 x Gasket (5-Bolt)

• Mounting Hardware

Note: The focus tube must be cut to length based on your specific tank depth. It should generally be cut so it sits approximately 1-2 inches above the bottom of the tank to allow for liquid flow while maintaining the "still well" effect.

Installation & Calibration Tips

• Measuring Depth: Before cutting, measure the distance from the top of the tank mounting flange to the bottom of the tank. Subtract the required clearance (usually 1") and cut the tube cleanly.

• Vertical Alignment: For an ultrasonic sensor to work, it must be mounted as close to perfectly vertical as possible. The TFT-5H helps enforce this alignment within the tank.

• Calibration: After installing the TLM sensor onto the TFT-5H, you will need a Maretron USB100 or DSM-series display to configure the tank capacity and fluid type on the NMEA 2000® network.