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#2
11/29/2004, 08:21 PM
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One one thousand, two one thousand, three one thousand (stirs calibration solution with probe), four one thousand, five one thousand.
Five seconds. Whether or not this is the recommended amount of time I don't know but it works for me.
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The answer to every single question in reefkeeping begins with "It depends..." |
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#3
11/29/2004, 11:20 PM
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And does your monitor stay at the perfect 7.00 or/and 10.00 when you calibrate it or does it go up and down and up and down? Do you calibrate till its close enough and then go to the other solution and do the same?
Anyone else do it diffrently or leave the probe in solution more time?
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#4
11/29/2004, 11:30 PM
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Leave it in the solution until the reading stabilizes at the 7.0 or 10.0 without fluctuating. It may take a while but if you don't your pH meter will not be calibrated correctly. Adjust the screw as necessary to bring the reading up or down to the 7 or 10 reading.
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Freed |
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#5
11/29/2004, 11:39 PM
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Does yours stay perfectly at 7.00 or 10.00 without it fluctuating? How long should I leave the probe in solution before I start to calibrate it? Once I calibrate it, do I wait again to see if it needs to get calibrated or just go to the next solution? How long does it take you to calibrate your monitor?
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Tang Police Fugitive No More! |
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#6
11/29/2004, 11:53 PM
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It usually takes me about a half hour to get it accurate. Yes, it stays put at 7 or 10 after I adjust it to that point over the half hour or so. You can go back and forth to calibrate if you want. Just make sure you rinse and dry between solutions. I usually wait to get either the 7 or 10 adjusted pretty close before going from one to the other.
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Freed |
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#7
11/30/2004, 12:36 AM
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Mine just dosent stay put. It keeps going up and down up and down. 7.01 7.00 6.99 7.00 6.99 7.00 7.01. The same goes for the 10. Im running it on battery not the ac adapter so I cant be getting any interfirence.
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#10
11/30/2004, 12:44 AM
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Let is sit for a little while to see where it ends up and then adjust it a little if necessary. A couple of hundreths one way or the other really won't make that big of a difference. As long as you're within a few hundreths you're OK. Tenths on the other hand and you may have a bad meter.
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Freed |
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#12
11/30/2004, 12:55 AM
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Ok well I adjusted it and its reading 6.99 7.00 7.01 7.00 6.99 7.00 not stopping dead on 7.00. Been doing this for the last mins. I guess mine wont stay at 7.00 dead on. So ima go to the next solution. Thanks for all your help guys.
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#13
11/30/2004, 01:38 AM
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don't worry about it, your only talking about 1/100th of a point. just get it as close as you can.
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========================================================= You can see some of my DIY stuff on my webpage,click on the little red house above. ========================================================= |
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#14
11/30/2004, 05:16 AM
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Rinse and dry the probe between solutions??
I swag it in RO and shake it a tad, but I have never dried my pH probe.
__________________
The answer to every single question in reefkeeping begins with "It depends..." |
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#15
11/30/2004, 05:48 AM
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Quote:
Once you let it stabilize to the point it is not changing you shall be able to adjust it right to the 7 and 10 readings. Note that if you will use to probe on a Calcium Reactor, my preference will be to calibrate it using solution 4 and 7 rather than 10 and 7 as under normal operation you will be reading below 7.
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Did I write what I wrote? What the heck am I talking about! Well..... Nevermind. |
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#16
11/30/2004, 05:51 AM
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Quote:
__________________
Did I write what I wrote? What the heck am I talking about! Well..... Nevermind. |
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#17
11/30/2004, 11:31 AM
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It sounds like you're doing ok. I've been lucky enough to get mine dead-on after only a few minutes of tweaking but I wouldn't worry too much if it's off 0.01. Make very small adjustments and wait for the reading to stabilize (maybe a minute or two IME.) and you should be fine.
FWIW, I was unable to calibrate one of mine after it was accidentally soaked with salt water. So I bought a new one and proceeded to drop it into a bucket of r/o  . Fortunately the battery was not installed and the monitor worked fine once it was entirely dry. lolGL
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Mark |
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#18
11/30/2004, 02:14 PM
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Well, thank you all for your help. I asked my LFS guy about the calibration and he told me to bring the probe back since it should stay dead on the 7.00 and 10.00 solutions atleast when new. I did and he gave me a new one. What a diffrence that made. I took off the cap and rinsed all that residue that it comes with. I placed it in the 7.00 solution and waited like 10 seconds and it stopped. Didnt go up or down. I calibrated it to the 7.00 and it didnt move not once. I dipped it in DI water and dipped it in the 10.00 solution. After 8 seconds it stopped and didnt move up or down. Calibrated it to 10.00 and waited to see if it would change and it didnt. Dipped it in DI water. Dipped it again in the 7.00 solution and after 5 seconds it reached the 7.00 reading and dindnt move like for 20 seconds. So I called it quits and dipped it in DI water and placed it in my sump. Reading stabalized at 8.27 so im good for now. Time to see how much of a swing I have at night time. Guess the blasted probe was bad all along. Thanks you guys.
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#23
12/02/2004, 09:58 PM
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Quote:
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Freed |
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Linear Mode
