PH probe bad?
- Thread starter drillsar
- Start date
BeanMachine
Active member
This may be a dumb question but what are do the four digit numbers indicate?
aquamanic
WHO DAT??
Those numbers don't mean anything, they're just a way for you to know the probe has stabilized in the particular solution. The point is, when the numbers stop and the probe has stabilized, that then becomes 7.0 or 10.0 respectively. The probe has been calibrated.
Sometimes you might select OK to indicate the probe has stabilized too soon. In that case, when you go back to test against the 7 or 10 solution you might be a little off. Then you go back and re-calibrate but give it a little longer.
When the numbers stop changing for 10 - 15 seconds, the probe is stable and at the reference.
Sometimes you might select OK to indicate the probe has stabilized too soon. In that case, when you go back to test against the 7 or 10 solution you might be a little off. Then you go back and re-calibrate but give it a little longer.
When the numbers stop changing for 10 - 15 seconds, the probe is stable and at the reference.
Specialtang
New member
The probe is not bad, at least when I shipped it to you it was not bad.
You need to calibrate the probe.
Put the pH and temp probe in the 7.0 solution and enter the set to calibrate it. Let sit in solution for a few minutes (according to Neptune this could be up to 5 minutes) Allow to stay in solution until the numbers do not change.
that is where 7.0 is and you are telling the controller this is 7.0 not the first number it gave you.
Rinse the probe off in clean water (tap or RO/DI)
Place both probes into the 10.0 solution, continue with the set up on the controller. Once it settles the numbers will no longer change that is 10.0 and you tell the controller that is 10.0
The numbers you are seeing do not matter when you are calibrating the probe. If you still feel the probe is bad you would need to buy a new one but I do not think you will see different results. From the sound of your posts everything is working just fine and your calibration method might be a little off.
You need to calibrate the probe.
Put the pH and temp probe in the 7.0 solution and enter the set to calibrate it. Let sit in solution for a few minutes (according to Neptune this could be up to 5 minutes) Allow to stay in solution until the numbers do not change.
that is where 7.0 is and you are telling the controller this is 7.0 not the first number it gave you.
Rinse the probe off in clean water (tap or RO/DI)
Place both probes into the 10.0 solution, continue with the set up on the controller. Once it settles the numbers will no longer change that is 10.0 and you tell the controller that is 10.0
The numbers you are seeing do not matter when you are calibrating the probe. If you still feel the probe is bad you would need to buy a new one but I do not think you will see different results. From the sound of your posts everything is working just fine and your calibration method might be a little off.
