PH pinpoint meter

[Earth Artist]

My pinpoint meter bounces all over the place within a range.. is this normal or is it supposed to stay at one numerical value and change as the reading changes????

[cstires]

Mine doesn't bounce around. I think if it's doing that you would need to recalibrate it or possibly get a new probe. Is the unit new? If so, maybe you got a defective probe...

[Earth Artist]

It is new and I had calibrated it...
have had it for 3 weeks.... has done it since it has been in the tank...
will constantly cycle between say 7.94-8.09 etc back and forth....
so yours reads at a constant number???

[shred5]

<a href=showthread.php?s=&postid=10364145#post10364145 target=_blank>Originally posted</a> by Earth Artist
It is new and I had calibrated it...
have had it for 3 weeks.... has done it since it has been in the tank...
will constantly cycle between say 7.94-8.09 etc back and forth....
so yours reads at a constant number???

I have had this several times but I can not remember what causes it.. I would check the connection of the probe to the unit and the battery's. I think mine did this when the batteries get low..

Dave

[wife no likey]

oddly, I have noticed that since I switched to using an AC adapter, my Pinpoint reads more consistently. :confused:

[Serioussnaps]

Is it near a kalk drip, reactor or pump of some sort?

[loudell]

Try a battery or shut off the lights and see if the reading stabilizes....

[mavgi]

<a href=showthread.php?s=&postid=10375223#post10375223 target=_blank>Originally posted</a> by loudell
Try a battery or shut off the lights and see if the reading stabilizes....

Ditto , it's the battery when it's get old the # change (normal they go up)

[kff]

<a href=showthread.php?s=&postid=10364145#post10364145 target=_blank>Originally posted</a> by Earth Artist
It is new and I had calibrated it...
have had it for 3 weeks.... has done it since it has been in the tank...
will constantly cycle between say 7.94-8.09 etc back and forth....
so yours reads at a constant number???

By "constantly" you mean every few seconds or every few minutes, right? If so, something is wrong with your probe / monitor. My pH reading maybe changes 0.01 every 15 minutes.