Fred, Mark, Employing the 'aural' method of water depth sensing, will the end of trickling sound always result in a precise depth in the reservoir? Of course, this depends on the length of tubing in the reservoir but can you simply add a measured amount of water after the sound stops? ie: trickling sound stops: add exactly one-half litre more to bring level within 1 cm of top? Or ... perhaps this measured amount could correlate to the moment the light stops blinking? If this works (the reservoir would have to be perfectly level, of course), you could simply mark a line on the watering can to indicate the 'top-up' amount. How close to the top of the tank do you dare to fill, Fred? Regards, Stan Kroeker On Jun 6, 2006, at 3:47 PM, Fred Sturm wrote: > Hi Mark, > I can hear the end of the trickling sound okay, but I like to > "push the envelope" and add another half a liter or so beyond, to > take care of the last day of those two weeks between fillings > during dry periods. Me, I have no help and have to fill the darned > things myself. Once every two weeks I can handle. > It's a matter of learning how much water to add beyond the > point where the sound diminishes to nothing, and the precise timing > of the end of the trickle noise. Of course, this depends on the end > of the tube (its setting in relationship to the top/bottom of the > tank) being consistent from piano to piano. I overfilled precisely > two times (we have hard water, so it left plenty of evidence in the > form of minerals). Fine enough for me, but if you are training > student help, you'll want something more concrete. > There are plenty of possibilities, including installing one of > those beepers at just the right level (probes set at just below the > target water level), with a switch in its cord. Turn the switch on > so it is beeping when you start to fill, then stop adding water > when it stops beeping. And remember to switch it off now, to avoid > annoying the sensitive ears of the piano prof between services <G>. > Regards, > Fred Sturm > University of New Mexico > fssturm at unm.edu > > > > On Jun 6, 2006, at 1:20 PM, Mark Cramer wrote: > > >> Question: Since you listen to the (faint) trickling sound when >> filling >> tanks, how hard should it be to make the filling process "noisier" >> i.e.: add >> somthing that rattles around at the end of the tube... ? >> >> or for that matter, why not a simple float that rises with the >> "tide" until >> it blocks the end of the filler tube? >> >> We really should be able to solve this thing. >> >> best regards, >> Mark Cramer, >> Brandon University >> >> >> >> >> >> >> -----Original Message----- >> From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org]On Behalf Of >> Fred Sturm >> Sent: Tuesday, June 06, 2006 9:36 AM >> To: College and University Technicians >> Subject: [CAUT] Undercover - hooks and grommets >> >> >> Hi all, >> Here are some pictures, as promised earlier, of my method of >> attaching an undercover, using hooks and grommets. It's the first >> such installation I ever did, and is an "under the beams" >> installation (before the new tanks which fit between beams), and with >> 48" (50w) rod (extends beyond the fabric - a neater job can be had >> with 38w, less wrinkling of fabric). Took me less than an hour to >> install, and really doesn't look too bad. I am better at it now, and >> can make a neater job of it for a fancy living room. This is in a >> faculty studio, and not at all in view. I was experimenting, and the >> grommets were added after a trial with tape, staples, and a hole. I >> find now that, with grommet squeezing pliers, I can just use the >> grommet to hold the fabric (create the "hem" and attach to the hook), >> and don't need the reinforcement of tape. The grommets in the picture >> were applied using a hammer, with punch and shaped anvil. The results >> were not very consistent, and it was much more time-consuming than >> pliers. $15 for the pliers was well worth the expense. >> Besides ease of installation. what I like about this system is >> ease >> of removal and replacement. Literally seconds to get it out of the >> way to service the tank and pads, and seconds to replace it. The >> observant among you might notice the tell-tale signs of over-filling >> the tank. I listen to the fill noise more carefully now. I manage to >> get two weeks between filling by maxing almost to the top of the >> tank. >> If anyone has questions, I'll do my best to answer, or perhaps >> take >> some different pictures. This was a hard set up for photography, as >> it is rather cramped (two B's next to each other), but it's the only >> undercover I have ready access to. The others I have installed are in >> private clients' homes. >> Regards, >> Fred Sturm >> University of New Mexico >> fssturm at unm.edu >> >> > >
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