Home » Public Forums » GMCnet » [GMCnet] Holding tank monitor question
| [GMCnet] Holding tank monitor question [message #342870] |
Fri, 26 April 2019 22:43  |
dsmithy
Messages: 210
Registered: July 2012
Location: Lincoln Nebraska
Karma: 0
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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...
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Douglas & Virginia Smith,
dsmithy18 at gmail,
Lincoln Nebraska,
’73 “Sequoia” since ‘95: "Wanabizo";
Quadrabag/6 wheel disks/3:70 final/Paterson QuadraJet/Thorley’s/Alloy wheels/Sundry other
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| Re: [GMCnet] Holding tank monitor question [message #342872 is a reply to message #342870] |
Fri, 26 April 2019 23:58  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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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 <
gmclist@list.gmcnet.org> wrote:
> 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@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Holding tank monitor question [message #342876 is a reply to message #342870] |
Sat, 27 April 2019 07:53 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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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
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| Re: [GMCnet] Holding tank monitor question [message #342881 is a reply to message #342878] |
Sat, 27 April 2019 10:26 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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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 <
gmclist@list.gmcnet.org> wrote:
> 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
>
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Holding tank monitor question [message #342888 is a reply to message #342886] |
Sat, 27 April 2019 13:27 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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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 <
gmclist@list.gmcnet.org> wrote:
> 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/
>
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Holding tank monitor question [message #342947 is a reply to message #342870] |
Mon, 29 April 2019 12:51 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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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
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| Re: [GMCnet] Holding tank monitor question [message #342991 is a reply to message #342947] |
Tue, 30 April 2019 14:40 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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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
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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