The iSeries comes with everything to measure tanks including the senders and it cost me about $200cdn. I already have a lot of electronics aboard (Raymarine, NMEA200, Raspberry Pi, Yatch Devices etc.) but could not bring myself to spend $ on networked tank monitoring. This is a low tech solution that works fine for us.
One reason I liked it was I did not have to cut into any of the tanks. This is a capacitive sensor that sticks on the outside. Some folks don't like that but it has worked perfectly even on the holding tank. Anyhow, there are many options but all the others I looked at were more intrusive and more expensive. As always YMMV :-) On Wed, Mar 31, 2021 at 12:30 PM Martin DeYoung via CnC-List < cnc-list@cnc-list.com> wrote: > Calypso has had the Tank Tender system in place for over 20 years. I > monitor the diesel tank and 2 water tanks. Once I learned/charted the > correlation between pressure readings and quantity of fluid in each tank it > has been very reliable as an indicator. > > I installed a different type of system in the holding tank that gives > “green/yellow/red” light indication of holding tank levels. That system > requires occasional cleaning of the float switches to remain accurate. > > Martin DeYoung > Calypso > 1971 C&C 43 > Seattle/Port Ludlow > > On Mar 31, 2021, at 8:38 AM, Peter McMinn via CnC-List < > cnc-list@cnc-list.com> wrote: > > > Thanks for the ideas. I used my dinghy foot pump to blow out the vent on > the port tank, which resulted in increased flow from that tank. I think I > need to replace the senders in both tanks to get accurate readings on tank > levels. Neighbor on the dock suggests a Tank Tender. Any suggestions? > > Peter McMinn > > _/) > > > > On Wed, Mar 24, 2021 at 6:32 AM Bill Coleman via CnC-List < > cnc-list@cnc-list.com> wrote: > >> This sounds likely – My usual fix for fixing the prime in the water pump >> in the spring was to bring a hose on board and blast water into the tank >> drain, up to the faucet – this would also blast over to the other tank, and >> likely blow out whatever crud was in the line. Then vacuum out that tank >> and clean. >> >> >> >> Bill Coleman >> >> Entrada, Erie, PA >> >> >> >> >> >> >> >> >> >> Something is preventing the free flow of water from one of the tanks. It >> could be; >> >> - a clog in the hose from the tank to the tee, >> >> - maybe a valve, somewhere in that line that is closed, >> >> - it could be the vent is plugged solid, creating a vacuum. Which does >> not allow the water to flow. >> >> >> >> Given that there is very little head pressure to overcome the vacuum, it >> wouldn't necessarily take too much of a plug on either side to stop the >> water flow. >> >> >> >> Danny >> >> ---------- Original Message ---------- >> From: Rick Brass via CnC-List <cnc-list@cnc-list.com> >> To: "'Stus-List'" <cnc-list@cnc-list.com> >> Cc: Rick Brass <rickbr...@earthlink.net> >> Subject: Stus-List Re: water tanks interconnected, or not? >> Date: Tue, 23 Mar 2021 23:37:40 -0400 >> >> My 38 also has a tank under the port and starboard settees. Each of the >> tanks has a shutoff valve at the outlet. The two drain hoses meet at a T >> under the floorboards, and from this T is the line to the pressure pump. >> >> >> >> Curiously, there is also a shutoff valve on each side of the T. I could >> see no good purpose for the second shutoff in each supply line (unless it >> was there to stop all the water from leaking out through a broken line), so >> I left them in place when I replaced the hoses a while back. >> >> >> >> Maybe you have an arrangement like this one? >> >> >> >> Rick Brass >> >> Washington, NC >> >> >> >> >> >> >> >> *From:* Adam Hayden via CnC-List [mailto:cnc-list@cnc-list.com] >> *Sent:* Monday, March 22, 2021 7:14 AM >> *To:* Stus-List <cnc-list@cnc-list.com> >> *Cc:* petemcm...@gmail.com; Adam Hayden <hayden.a...@hotmail.com> >> *Subject:* Stus-List Re: water tanks interconnected, or not? >> >> >> >> Peter >> >> Very interesting. I have the same issue except my port tank drains and >> the Starboard tank does not. >> >> Drives me crazy. >> >> Adam c&c 36 >> >> Sent from my Bell Samsung device over Canada’s largest network. >> >> >> ------------------------------ >> >> *From:* Peter McMinn via CnC-List <cnc-list@cnc-list.com> >> *Sent:* Monday, March 22, 2021 3:55:08 AM >> *To:* cnc-list@cnc-list.com <cnc-list@cnc-list.com> >> *Cc:* petemcm...@gmail.com <petemcm...@gmail.com> >> *Subject:* Stus-List water tanks interconnected, or not? >> >> >> >> I have a 30gal water tank under both settees. The valves for each are set >> to open flow. However, the pump seems to draw only from the starboard side. >> I’d assumed that with both valves open, the tanks would equalize, but the >> stbd tank empties and the pump goes dry, while the port tank remains full. >> Can someone venture to what’s going on? I’ve read this 2015 discussion >> <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcnc-list.com%2Fempathy%2Fthread%2F2KB2NSDGELMQQJSRMPPWPHVMCWQJ2ICR%3Fhash%3DSLQZNGDWP5TUBYWW6HFGKHJT5DVCWB5F%23SLQZNGDWP5TUBYWW6HFGKHJT5DVCWB5F&data=04%7C01%7C%7C8d72db96242941d39daf08d8f45b06aa%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637528019072013898%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=JqgPaF4hW1zmolXa%2BbUFlB9w2CTq6JhqoH1X1%2FgmM9E%3D&reserved=0>, >> but the OP then was interested in disconnecting the two tanks. I’ll do some >> exploring tomorrow to see what might be preventing the tanks from >> equalizing. Ideas are welcome. >> Thanks to all of the subscribers that contributed to the list to help >> with the costs involved. If you want to show your support to the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.paypal.me%2Fstumurray&data=04%7C01%7C%7C8d72db96242941d39daf08d8f45b06aa%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637528019072021763%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=y3YCcptJt39Ez8fOGlA1N8SkjMIw%2BjN9%2BEmpWzAnxrM%3D&reserved=0> >> Thanks - Stu > > Thanks to all of the subscribers that contributed to the list to help with > the costs involved. If you want to show your support to the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray Thanks > - Stu > > Thanks to all of the subscribers that contributed to the list to help with > the costs involved. If you want to show your support to the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray Thanks > - Stu
Thanks to all of the subscribers that contributed to the list to help with the costs involved. If you want to show your support to the list - use PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu
