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TXBart · 10-27-2013, 08:43 PM

It's been discussed here before but I want to pile on a little.

I visually filled my fresh water tank yesterday to about 3/4" from the top. Both my digital read outs say 67%. Kinda disappointed. Maybe it will shake higher after we get on the road.

Does anyone know if we have float or resistance senders?

DSL417 · 10-27-2013, 08:47 PM

They are resistance on the black and grey...I would assume they are resistance on the water as well.

TXBart · 10-27-2013, 09:04 PM

Then it isn't gonna jiggle to better accuracy! ;-)

jesilvas · 10-27-2013, 09:12 PM

It also matters where the manufacturer installed the sensors too.

DSL417 · 10-28-2013, 04:37 AM

Quote:

Originally Posted by TXBart

Then it isn't gonna jiggle to better accuracy! ;-)

Can't speak to the water, but might apply given how hard most water is, as if you run with tanks empty, they dry out on the sides. Any deposits, be it slime or sediment in the grey/black, or, who knows, hard water deposits in the fresh water tank, can impact the readings of the resistance measurement sensors (happened to me on the black). Turned out, having some slosh in the tanks is useful every third or fourth road trip to "wash" the sides of the tanks where the sensors lie. This keeps the deposits from hardening and creating long term problems with the sensors.

That said, I haven't had any problem with my fresh other than slight variation of what it looked like to what it measured.

TXBart · 10-28-2013, 05:59 AM

Can't be a deposit issue with my freshwater tank; this is the firs time it has been filled over about 25%.

MRUSA14 · 10-28-2013, 06:05 AM

Vance, your sensors are a lot better than mine. My fresh tank, when filled to completely full, shows 75%. When the sensor reads zero, I still have more than 1/3 of a tank left. I think the sensor was mounted incorrectly, and it is on my list of things to have addressed under warranty.

This leads me to wonder about the accuracy of my grey and black sensors, but I am reluctant to fill and test them due to the possibility of an overflow.

brobox · 10-28-2013, 06:49 AM

From what I am seeing the tanks gauges have not improved much since the TS.
I am fortune on the TS I can see the freshwater tank in the water bay so I have visual level. I don't know about the Anthem yet.

MRUSA14 · 10-28-2013, 07:58 AM

On the Entegras you can visually see the fresh water tank also. But not the waste tanks.

brobox · 10-28-2013, 10:51 AM

Quote:

Originally Posted by MRUSA14

On the Entegras you can visually see the fresh water tank also. But not the waste tanks.

Great, I'll still use my old method, visual on the freshwater fill. Drains start getting slow, dump the gray tank, bathroom starts to stink, dump the black tank. I can't remember the last time I looked at my tank gauge that are anyone's guess as to what the true level of the tanks are.

DSL417 · 10-28-2013, 10:58 AM

At least on my Anthem, when it says 100% on the grey, and you continue to run water the sink starts gurgling...so I'm pretty comfortable with the sensor there (and yes, it was an error allowing it to get that full). The black appears to be fairly accurate if you follow my rec above (which came from PJ after I had a bout with 10% registering red and the toilet not flushing). Since you can't put ice cubes in to slosh around and "scour" the inside of the black, you might consider it.

I do have some background in remote sensing...my general experience is that resistance sensors can vary all over the board when it comes to accuracy.

brobox · 10-28-2013, 12:25 PM

Dave, is the reason you cannot put ice cubes in the black tank to clean it becasue of the "new" type of sensors?

I use to use the Calgon water softener beads and laundry soap method to clean the sensors, but that got to were it wasn't even worth it as the cleaning last about 2 tanks full.

DSL417 · 10-28-2013, 12:35 PM

No, those of use with a center flush electric toilet have a maceator en route...crushed doesn't do any good, and would probably break what are likely plastic blades (although I don't know much about how they work). JMHO

rogelling · 10-28-2013, 02:01 PM

I read in the manual for the tank sensors that they are "self-calibrating", meaning that they reflex what is in the tank better as the tank goes through several fill/empty cycles.
I think this is because they are resistive but also have fuzzy logic? Not sure. But my fresh water tank reads 95% full, then goes done to 10% while I'm emptying it then when empty it jumps back to 25%. What kind of a "glitch" is that?