Holding tank and water tank under V berth sending units

[VFR750]

wiring completed today.

 

[skunther]

SCAD is the top rated water and holding tank level monitor...sensor attaches to the outside of any tank material except metal. I especially like that it provides an infinite tank level reading instead of the typical 1/4, 1/2, 3/4, full. Reasonably priced, available from a number of retailers and easy to install.

--Peggie




--

@Peggie Hall HeadMistress, do you know the best method to calibrate the Scad sensor for Full? I manually filled the tank to what seemed to be the old float sensor Full position, which ended up being ~1” from the top of my 2’x2’x1’ tall tank. I’m worried that it might be so full as to risk fouling the vent when heeling under sail, but it does seem to be the same level as the old float sensor.

 

[rpwillia]

I like the idea of the stick on sensors on the side, but do not want another display, and my Axiom can show tank levels via nmea2000. The maretron looks like it will do, but it requires cutting a hole.

 

[dlochner]

I like the idea of the stick on sensors on the side, but do not want another display, and my Axiom can show tank levels via nmea2000. The maretron looks like it will do, but it requires cutting a hole.

The Gobius C mounts to the top of the tank, connects to a NMEA 2000 network and has Bluetooth LE. Pricey, but a lot of features. Also connects to Cerbo GX.

Gobius C

gobiusc.com

 

[rpwillia]

With the Gobius C, is that hockey puck looking thing the only thing that attaches to the tank? No sensor stripe down the side? Does it do some kind of ultrasound to get the level?

 

[dlochner]

With the Gobius C, is that hockey puck looking thing the only thing that attaches to the tank? No sensor stripe down the side? Does it do some kind of ultrasound to get the level?

Yes, the puck attaches to the top of the tank with VHB tape, no sensor stripes. The unit connects to the NMEA 2000 for power and sends data to the network. It can be read on a Chartplotter or display that can read the data. It also has BlueTooth LE, which is a low energy version of bluetooth. This version of BT has a very short transmission distance.

The unit is a micro radar. Similar to the Maretron sonic senders, but uses radio frequencies like an ordinary radar. Set up is pretty straightforward. It will ask for the dimensions of the holding tank and will calculate the volume and for odd shaped tanks it will also calculate the volume, level and percent of capacity. Pretty slick units.

One minor drawback to all NMEA 2000 sensors is data delay. The sensors send out data every 15(?) seconds, as opposed to analog sensors which are continuous.

 

[rpwillia]

[QUOTE="dlochner, post: 1867152, member: 123499"
One minor drawback to all NMEA 2000 sensors is data delay. The sensors send out data every 15(?) seconds, as opposed to analog sensors which are continuous.
[/QUOTE]

I have been guesstimating tank levels for 20+ years so I can live with a few seconds delay.