Splitting fuel tank gauge

[Letterkenny]

Just got a CerboGX installed so want to get my fuel tank sensor on this. However, I’d like to keep the same analog gauge as well. Can I just split the signal lines and run the new ones to the CerboGX?

[GordMay]

Victron Energy “Cerbo GX” Manual
➥ https://productimageserver.com/liter...al/83355OM.pdf

According to Kevin Windrem:
➥ https://community.victronenergy.com/...-tank-lev.html

Probably not, at least not yet.

I'm assuming resistive senders. These are connected to the analog gauges which draw a specific amount of current against the resistance of the sender, which varies depending on the level in the tank.

Cerbo does a similar thing: it pulls up on the sender input with 680 ohms to +5 volts.

If Cerbo and the analog gauge are connected to the same sender, they will both pull current through the sender's resistance offsetting both readings.

Victron is working on a box that provides 4 analog inputs that can accommodate a voltage without pulling on the sender. This can probably run in parallel with your existing analog gauges. The Victron box is in the prototype stage and not available to consumers at this time.