Kellz Posted January 19, 2003 Report Share Posted January 19, 2003 http://www.dse.co.nz/cgi-bin/dse.storef ... View/Y5033 its a digital thermomenter that an alam goes off when the temp goes down. Its around $32 Quote Link to comment Share on other sites More sharing options...
Ira Posted January 19, 2003 Report Share Posted January 19, 2003 I've got 3 of them, they're great...Well...Except for one of them, it's all messed up because it got in the way of a spill. Quote Link to comment Share on other sites More sharing options...
Midas Posted January 20, 2003 Report Share Posted January 20, 2003 does the alarm go off if the temperature gets too high as well as too low? Quote Link to comment Share on other sites More sharing options...
Ira Posted January 20, 2003 Report Share Posted January 20, 2003 Yup. Got a setting for tropical where it goes off outside of 24°-28° and a setting for discus where it goes off outside of 28°-32° Or somewhere similar, anyway. Quote Link to comment Share on other sites More sharing options...
Kellz Posted January 21, 2003 Author Report Share Posted January 21, 2003 Might go into DSE and have a look Quote Link to comment Share on other sites More sharing options...
Kriber Posted January 23, 2003 Report Share Posted January 23, 2003 Got one as well and it appears to work fine, gives the same temp. as another thermometer I've got and about the same temp. as what my external heater setting says. Read : hopefully its accurate! They also have a sensor that measures the room temperature - useful for giving an indication of how hard your heater will have to be working. Quote Link to comment Share on other sites More sharing options...
ajbroome Posted January 23, 2003 Report Share Posted January 23, 2003 Folks, I see they've got a digital pH meter as well... Andrew. Quote Link to comment Share on other sites More sharing options...
Ira Posted January 24, 2003 Report Share Posted January 24, 2003 Yup, I got that too. Not too sure about it, though. But, I guess it IS cheap anyway for a PH meter, so I can forgive the damn thing turning itself back on whenever I put the cover back over the electrode. Quote Link to comment Share on other sites More sharing options...
john1 Posted January 30, 2003 Report Share Posted January 30, 2003 Hi Bought the DSE thermometer too. Easy to read and accurate. Also bought a $100 pH meter. Absolute rubbish. Returned it. They could not get it going. The guy at the shop tried another new one at my request. Same. Reading went up and down like a Yo-Yo. So I decided to get the swimming pool one. More expensive. But better. Selfcalibrating and replacable electrode. And it floats too. meaning it is waterproof. Now I am happy with both. John Quote Link to comment Share on other sites More sharing options...
Ira Posted January 30, 2003 Report Share Posted January 30, 2003 The one I've got, which I assume is the same as the cheap one you're talking about, only bounces up and down in the .01PH range, which is far more precise than matters. Doesn't the floating one only measure to .1ph so you wouldn't see its measurement bouncing around in the hundredths anyway. Quote Link to comment Share on other sites More sharing options...
john1 Posted January 31, 2003 Report Share Posted January 31, 2003 Hi Ira I don't know what you have. Mine has a resolution of 0.1. The one I am talking about had a resolution of 0.01. both from Dick Smith. But I don't mean the bouncing of the least significant digit, which is the 0.01. The most significant digit bounced. That means, it went from 5.03 to 12.77. Totally useless. I design and work with electronics, one of my hobbies. An instrument with a display you mention, would bounce the 1/100 of a unit. I would not worry about it. Usually one just puts a black tape over the least significant digit so that only the important ones are visible. I might have expressed myself not clear enough to you. John Quote Link to comment Share on other sites More sharing options...
Ira Posted January 31, 2003 Report Share Posted January 31, 2003 Hmmm, mine only did similar swings to that when I tested the water directly in the tank while the heater was on and the lights were on. Very sensitive to stray currents. Either turning everything off or testing in a glass outside of the tank fixed that. Quote Link to comment Share on other sites More sharing options...
john1 Posted January 31, 2003 Report Share Posted January 31, 2003 Hi Ira The two el-cheapo ($100) units were tested at the Dick Smith Store by two different salespeople and two different units. The test was done in the test-buffer-solution on the counter. And none could be calibrated. The readings went from the ridululous to the sublime. So what can I say.... John Quote Link to comment Share on other sites More sharing options...
john1 Posted February 12, 2003 Report Share Posted February 12, 2003 Hi all Maybe someone is interested in the DSE pH meter, but NOT from DSE. It cost you $197 at Dick Smith and $119 for the waterproof one or $97 for the non waterproff one. Try that http://hydroponicxpress.com.au/Price%20List.htm John Quote Link to comment Share on other sites More sharing options...
Sayhi2steve Posted February 17, 2003 Report Share Posted February 17, 2003 Thankz Kellz went and got one after reading this and its awesome reads quite abit different to those stick on thermometers one says 28 and the other 25,8 :lol: :lol: :lol: Quote Link to comment Share on other sites More sharing options...
Caryl Posted February 17, 2003 Report Share Posted February 17, 2003 I have 3 thermometers on my main tank. The digital reads 24.5, the mercury reads 25 and the stick-on is a bit hard to tell but may be 28 Quote Link to comment Share on other sites More sharing options...
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