slappers Posted April 7, 2006 Report Share Posted April 7, 2006 started to gut out a lab last week ripping all benches and tables out and what did i find a TDS meter still in box unsure if it has been used or not no instructions how do theses things work the lower the reading the better the water?? Quote Link to comment Share on other sites More sharing options...
ghostface Posted April 7, 2006 Report Share Posted April 7, 2006 yeah the lower the better, ro water should be under 5ppm TDS i think? i think they need calibration though, needs calibration fluid to do it. Quote Link to comment Share on other sites More sharing options...
chimera Posted April 7, 2006 Report Share Posted April 7, 2006 yes, lower the better. may need to be calibrated? (fortunately) mine doesnt, i think most do though. Quote Link to comment Share on other sites More sharing options...
slappers Posted April 7, 2006 Author Report Share Posted April 7, 2006 well this is what i have got http://www.hannainst.com/products/teste ... Code=DiST6 Quote Link to comment Share on other sites More sharing options...
slappers Posted April 7, 2006 Author Report Share Posted April 7, 2006 automatic calibration :bounce: :bounce: :bounce: Quote Link to comment Share on other sites More sharing options...
slappers Posted April 7, 2006 Author Report Share Posted April 7, 2006 having a play water from my RODI unit 0.00 water from the tap 0.19 is it monday yet want to go back to work to see what else i can find :bounce: :bounce: Quote Link to comment Share on other sites More sharing options...
Ira Posted April 7, 2006 Report Share Posted April 7, 2006 If it's putting out those numbers I'd guess it's in percent or something, not ppm like the ones usually used. Quote Link to comment Share on other sites More sharing options...
wasp Posted April 7, 2006 Report Share Posted April 7, 2006 The one I use, a Hanna, came pre calibrated, and tested twice, with the test results filled in. It tests RODI at 00, and Auckland tap water, with some day to day fluctuations, somewhere around 60 or 70 ppm. So yours giving a reading of 0.19 for tap water, as IRA said, would appear to be some other unit than ppm. Have fun, I'm sure you'll figure it out. Perhaps if you could beg or borrow a TDS meter with known readings and do a comparison, would help figure it out. And - Good Score!! Quote Link to comment Share on other sites More sharing options...
chimera Posted April 7, 2006 Report Share Posted April 7, 2006 this is the one i use, an HM digital inline dual TDS meter also with automatic calibration. one probe sits prior to RODI and one after. flick the switch on the unit to show ppm in and ppm out. shows 75 in, 0 out currently. doesnt matter what in shows, so long as out shows 0!!! Quote Link to comment Share on other sites More sharing options...
slappers Posted April 7, 2006 Author Report Share Posted April 7, 2006 i have two readings the one earlier is in mS and this one will be in ppt RODI 0.00 TAP 0.10 I don't know what mS or PPT stand for. i will send them a email Quote Link to comment Share on other sites More sharing options...
lduncan Posted April 7, 2006 Report Share Posted April 7, 2006 Looks like a combined conductivity and tds meter. Conductivity (relates to salinity) is measured in mS (milli Seimens) PPT is parts per thousand and would correspond to a tds reading. By the looks of it the "mode" button would be used to select what type of measurement you want; conductivity (in mS) or TDS (in PPT) I can't read what the other button says though. Layton Quote Link to comment Share on other sites More sharing options...
slappers Posted April 7, 2006 Author Report Share Posted April 7, 2006 its on and off on the left and set/hold Quote Link to comment Share on other sites More sharing options...
slappers Posted April 11, 2006 Author Report Share Posted April 11, 2006 Quote Link to comment Share on other sites More sharing options...
gregb Posted April 11, 2006 Report Share Posted April 11, 2006 My TDS meter is a fish with erect fins & a fat belly. Quote Link to comment Share on other sites More sharing options...
slappers Posted April 19, 2006 Author Report Share Posted April 19, 2006 orderd one of theses today should be here friday Quote Link to comment Share on other sites More sharing options...
chimera Posted April 19, 2006 Report Share Posted April 19, 2006 hey Chimera i like that one where did you get that from MarineDepot.com, where did you order yours? Good price, works well. Quote Link to comment Share on other sites More sharing options...
slappers Posted April 19, 2006 Author Report Share Posted April 19, 2006 $80 Anthony Preston Ltd Quote Link to comment Share on other sites More sharing options...
slappers Posted April 21, 2006 Author Report Share Posted April 21, 2006 got it today having a play water going out 160ppm as in waste water going to container 000ppm Quote Link to comment Share on other sites More sharing options...
wasp Posted April 21, 2006 Report Share Posted April 21, 2006 Got it today? That DI resin looks 1/3rd way stuffed already. You sure it hasn't been used before? Quote Link to comment Share on other sites More sharing options...
misnoma Posted April 21, 2006 Report Share Posted April 21, 2006 Got it today? That DI resin looks 1/3rd way stuffed already. You sure it hasn't been used before? I think he was talking about the TDS meter. Quote Link to comment Share on other sites More sharing options...
wasp Posted April 21, 2006 Report Share Posted April 21, 2006 Oh, I see, you'd be right! Quote Link to comment Share on other sites More sharing options...
slappers Posted April 21, 2006 Author Report Share Posted April 21, 2006 it started at the top and working its way down ??? i have got another two bags Quote Link to comment Share on other sites More sharing options...
wasp Posted April 21, 2006 Report Share Posted April 21, 2006 There are 2 ways to set up these DI chambers, top down, or bottom up. The correct way is bottom up, and looks like that's what you've got. The water exits the internal downpipe a little above the bottom, ( which in my view is a design flaw ), so your resin is changing to yellow around the exit point from the pipe, nearest the bottom. By the time the yellow get's up to nearly the top, the bottom portion of resin will have slowly turned yellow also. On the top chamber housing, the blue bit, where the tubes plug in, can be seen written the words "in', and "out". This is if using a cartridge. If using loose media such as DI resin, the order is reversed, you plug the inlet into where it says "out". This gives you bottom up flow, which eliminates any air in the system and allows 100% efficient use of the media. Quote Link to comment Share on other sites More sharing options...
slappers Posted April 21, 2006 Author Report Share Posted April 21, 2006 all better gave a flush Quote Link to comment Share on other sites More sharing options...
slappers Posted April 21, 2006 Author Report Share Posted April 21, 2006 lol oh sorry wasp it was my tds meter i got today Quote Link to comment Share on other sites More sharing options...
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