The TLM100 can 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. The TLM100 is mounted directly to the top of tanks using the industry standard SAE J1810 5-hole mounting pattern. Unlike most tank senders that only work with rectangular tanks, the TLM100 can be calibrated for irregular tank shapes so you can know the true fluid level in your tanks. It can be used for diesel, fresh water, waste water, black water, and oil tanks (see TLM150 for gasoline tanks or TLM200 for deeper tanks). The TLM100 is capable of sensing fluid levels in tanks up to 40? (1.02m) in depth. 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. What this means for you is that there are no difficult to handle long probes protruding into the tank, which often foul and/or corrode. Ultrasonic, or sound waves, are transmitted via the TLM100 mounted at the top of the tank and the flight times of the sound waves to and from the fluid are measured much like a depth sensor. The water tank sensor works ok.Maretron's TLM100 is used to sense fluid levels of tanks by using ultrasonic technology. I have now started to look for fuel sensors without moving parts which are not ultrasonic due to the foam problem. Ok, maybe you can do it if you are prepared to spend half an hour or an hour at the fuel dock waiting for the foam to disappear. I cannot reliably fill the tank to the top without spilling diesel out of the overflow.
#MARETRON NMEA 2000 TANK LEVEL MONITO FULL#
Sensor says tank is full you stop filling and 15 mins later after you left the fuel dock your sensor says 70% in your tank. It took me ages to understand, what is going on but I am now thinking, that during filling, there is a lot of foam developing in the tank which fools the sensor. It will say it's full, you stop filling and then it falls back to 70% after a while. The bit which really cheeses me off is, when you fill the tank, the fill level delivered from the sensor goes completely off kilter every time. Just don't understand, how an intelligent sensor cannot iron out these sudden changes in its algorithm. I could live with that once I had learned to ignore these brief and sudden changes.
So it's not waves sloshing around in the tank. There are 2 problems, the value delivered from the sensor seems to randomly "jump" around sometimes even when the boat lies still in a marina. Now I am thinking, there must be something better out there.
I added another fuel tank TLM100 later to our second diesel tank. I got it done and it shows on all my Furuno displays (the 12" MFD and the FI-70 displays no problem) and on the DSM250. The DSM GUI is not very intuitive for the calibrating part. Spent hours filling the fuel tank through a meter to measure volume versus fill height and at the same time calibrating the display (Maretron DSM250).
I installed 2 TLM100 6 years ago, thinking they are the bee knees.
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