Holding tank monitor question

D

douglas smith

New member
Jan 14, 1999
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Ladies and Gents,
I was unable to discover an existing discussion, so pardon me if this brings up an old topic. I am wondering if there is any consensus on the best aftermarket holding tank monitors for our GMC’s. The fresh water tank seems tall enough to avoid problems, but the grey/blackwater tank is shallow enough for me to imagine difficulty with an accurate reading.

My holding tank sender was shot and had issues at its site so I marine epoxied it away (holding fine, thank you) and my OEM fresh water tank sender has given up the ghost recently, and my propane level has never been trusted So…..

Looking for suggestions. Any ideas or proven solutions for a three tank monitor?
Thanks in advance for your help, experience and wisdom.
Doug

Douglas & Virginia Smith
dsmithy18 at gmail
Lincoln Nebraska
’73 “Canyonlands” since ‘95: “Wanabizo”, Anishinabe Indian for “He gets lost driving” Yes, really.
Quadrabag/6 wheel disks/3;70 final/Paterson QuadraJet/Thorley’s/Sundry other
P&W PT6, no wait, that's the wish list...
 
The simple one is the one where one places few senders on the wall.
We carry a kit that will allow one to get a panel to monitor all fluids ,
LPG , battery,

On Fri, Apr 26, 2019 at 9:19 PM Douglas Smith via Gmclist <

> Ladies and Gents,
> I was unable to discover an existing discussion, so pardon me if this
> brings up an old topic. I am wondering if there is any consensus on the
> best aftermarket holding tank monitors for our GMC’s. The fresh water tank
> seems tall enough to avoid problems, but the grey/blackwater tank is
> shallow enough for me to imagine difficulty with an accurate reading.
>
> My holding tank sender was shot and had issues at its site so I marine
> epoxied it away (holding fine, thank you) and my OEM fresh water tank
> sender has given up the ghost recently, and my propane level has never been
> trusted So…..
>
> Looking for suggestions. Any ideas or proven solutions for a three tank
> monitor?
> Thanks in advance for your help, experience and wisdom.
> Doug
>
> Douglas & Virginia Smith
> dsmithy18 at gmail
> Lincoln Nebraska
> ’73 “Canyonlands” since ‘95: “Wanabizo”, Anishinabe Indian for “He gets
> lost driving” Yes, really.
> Quadrabag/6 wheel disks/3;70 final/Paterson QuadraJet/Thorley’s/Sundry
> other
> P&W PT6, no wait, that's the wish list...
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
The current coach has a panel such as JimK notes. However, the first one - Norris upfit - had none for water and holding. It had a gauge on the tank
for propane. It held 40 gallons, fresh and used water and about seven gallons of propane. I just watched the water tank which was visible in a
cabinet. When it got low, pretty obvious the blackwater was getting full, go dump. For propane, open the hatch and look at the gauge. I like that
setup for propane because there is no penetration of the tank... the gauge is magnetic. Note that I usually end up where there are hookups at show
venues, so it's not a great problem for me. This coach has a macerator, I stick the pipe in the dump and every evening or so, turn the switch and
dump.

--johnny

--
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
 
I have both the Applied (JimK) potable and black sending units. The potable is pretty good. I'm just going to leave it there because the black tank
is too shallow for any system I know of to be reliable. The Rochester Instrument sending units are pretty good, but the black tank has issues that
even the best instrument cannot address. Monitoring the potable tank is your best bet.

Matt
--
Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan
OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit
 
I have found that the even our shallow tanks do read well.
I try to mount the sensors close to the center where the tank has the max.
height.
They now have sensors that are less effected by the tissues, causing a poor
reading.
Call me ad I will assist you. You are in on way obligated to purchase
anything as we do well .

On Sat, Apr 27, 2019 at 7:14 AM Matt Colie via Gmclist <

> I have both the Applied (JimK) potable and black sending units. The
> potable is pretty good. I'm just going to leave it there because the black
> tank
> is too shallow for any system I know of to be reliable. The Rochester
> Instrument sending units are pretty good, but the black tank has issues that
> even the best instrument cannot address. Monitoring the potable tank is
> your best bet.
>
> Matt
> --
> Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> Electronically Controlled Quiet Engine Cooling Fan
> OE Rear Drum Brakes with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
In our first GMC we had a JRV panel from JIMK that used the existing sensors and it worked ok with the black tank most of the time.
We would fill the fresh tank and when it was empty we would dump the black tank. Which I think is what Matt does.
With our current GMC the PO put a macerator switch in the bathroom so we have adopted another method.
When we have full hookups I have an expandable macerator hose that I hook to the sewer and leave the valve to the tank open
then each morning we pump the tank to the sewer.
If we have no sewer hookup we use the method from our previous GMC
We have the original monitor panel and only the 12 volt gauge works.
I doesn't bother us too much it does not work, you just have to keep track of your use.
Our SOB had a See-Level panel that worked very well but all of the tanks were at least 12 inches tall.
--
Tom Lins
St Augustine, FL
77 GM Rear Twin, Dry Bath, 455, FI-Tech EFI
Manuals on DVD
http://www.bdub.net/tomlins/
 
Tom,
So others do not get confused, explain that you have a recirculating toilet
?

On Sat, Apr 27, 2019 at 11:22 AM Tom Lins via Gmclist <

> In our first GMC we had a JRV panel from JIMK that used the existing
> sensors and it worked ok with the black tank most of the time.
> We would fill the fresh tank and when it was empty we would dump the black
> tank. Which I think is what Matt does.
> With our current GMC the PO put a macerator switch in the bathroom so we
> have adopted another method.
> When we have full hookups I have an expandable macerator hose that I hook
> to the sewer and leave the valve to the tank open
> then each morning we pump the tank to the sewer.
> If we have no sewer hookup we use the method from our previous GMC
> We have the original monitor panel and only the 12 volt gauge works.
> I doesn't bother us too much it does not work, you just have to keep track
> of your use.
> Our SOB had a See-Level panel that worked very well but all of the tanks
> were at least 12 inches tall.
> --
> Tom Lins
> St Augustine, FL
> 77 GM Rear Twin, Dry Bath, 455, FI-Tech EFI
> Manuals on DVD
> http://www.bdub.net/tomlins/
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502
 
The water you make not from the potable water tank is on the order of a gallon or less in a week or so of camping. So as the potable water disappears
the blackwater appears at substantially the same rate. Gauge it if you must (can't see it). If you can see it, simply look regularly and dump and
refill when it's low.
--
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
 
You might look at the Garnet SeeLevel monitors. I've had good luck with them in a number of applications, including a couple of GMC's. The wiring is
simple and you can reuse your existing conductors. And they read in percent of tank contents and seem to be very accurate. Be sure you follow all
their guide lines though, as a miss step can cause issues. Try to find someone selling them that is very familiar with their products as there are
many variations in sensor length/monitor panels, etc. Worth a look IMHO.
Hal
--
1977 Royale 101348,

1977 Royale 101586, Diesel powered,

1975 Eleganza II, 101230,

1974 Eagle Bus 45',w/slideout,

Rio Rancho, NM
 
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