View Full Version : thermometer question
mytank90
08-06-2009, 11:01 AM
i have a question about thermeters .i had a small digital one i didnt like and when and bought a larger one today .i have both in tank right now and probes in same location but they read 3 degrees different .one says tank is 77.5 other says 80.6 .which one should i belive?
wickedfrags
08-06-2009, 12:05 PM
One is the air temperature and one is the water temperature. I believe the temp with OUT beside it is the water temperature, and IN the air temperature (but it has been a while since I owned one).
Check the instructions if you still have them (assuming they come with instructions).
i have a question about thermeters .i had a small digital one i didnt like and when and bought a larger one today .i have both in tank right now and probes in same location but they read 3 degrees different .one says tank is 77.5 other says 80.6 .which one should i belive?
Borrow a third thermometer or take your two to the LFS and compare. If the one you like is out by 3 degrees then you can still continue to use it as long as you remember the display is out by three degrees and add/subtract for a true result.
fishytime
08-06-2009, 12:50 PM
Seems like the vast majority of digital thermometers are "off" a bit.....double check your temp with an old fashioned glass thermometer.
Barrett.Oliver
08-06-2009, 01:58 PM
I second the motion for using a glass thermometer.... Had problems with the digital meter I started with.
Hehe, I never trust just one thermometer.. I have three, two different styles of glass and a digital one. All three are slightly different. I take an average of the three :lol:
scherzo
08-06-2009, 03:35 PM
I had (for a little bit) a digital, 2 glass, and a hand held spot thermometer.
They all varied differently by about 4 degrees! I hated it. So just so I don't second guess myself anymore. I just trust one glass one.
fkshiu
08-06-2009, 05:40 PM
If you don't have a fever do the following:
Clean both thoroughly.
Put the probes/thermometer under your tongue and wait.
They should read 98.6 degrees F.
Gives new meaning to "self-calibrating".
If you don't have a fever do the following:
Clean both thoroughly.
Put the probes/thermometer under your tongue and wait.
They should read 98.6 degrees F.
Gives new meaning to "self-calibrating".
http://i.dailymail.co.uk/i/pix/2008/12/23/article-0-02E0EFFF000005DC-285_468x363.jpg
That cracks me up! The science is good though.
PoonTang
08-06-2009, 08:55 PM
If you don't have a fever do the following:
Clean both thoroughly.
Put the probes/thermometer under your tongue and wait.
They should read 98.6 degrees F.
Gives new meaning to "self-calibrating".
I think if you put it "in the OTHER end" it will be more accurate. :twised:
Lance
08-06-2009, 09:43 PM
I think if you put it "in the OTHER end" it will be more accurate. :twised:
But don't put it back in the aquarium or your skimmer will go crazy! :mrgreen:
fishytime
08-07-2009, 01:02 AM
But don't put it back in the aquarium or your skimmer will go crazy! :mrgreen:
:rofl:
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