PH probe

[emict326]

My Ph probe will work fine for several hr and then goes to a Ph of 1, after a while it will slowly come back up to the 6 area, if i recalibrate it it will work for a few hr and then drop back to 1. any ideas

[rimai]

Get a cup full of tank water and place the probe inside of it.
What happens?

[emict326]

it is stuck on 2.98, i placed it in a cup of watter and it stayed. even when i place it in calibration fluid it stayed at 2.98. i tried to recalibrate it and in the screen it only showers 0

[emict326]

it is stuck on 2.98, i placed it in a cup of watter and it stayed. even when i place it in calibration fluid it stayed at 2.98. i tried to recalibrate it and in the screen it only showers 0

[rimai]

Can you check your probe??
Looks like it's gone bad then.
Does the glass bulb in the tip look intact and free of bubbles inside?
It could be bubbles in the tip or stuff encrusted in it.

[emict326]

there are bubbles in the probe on up where the probe is blue, but none that i can see in the tip. the prob is only a few weeks old

[rimai]

Can you check the BNC connector end?
Try twisting or plugging and unplugging or wiggling the cable.
Maybe a bad connection?

[emict326]

i borrowed my neighbors probe, calibrated it, i placed it on the head unit and it appears to be working. this leads me to believe that the prob has already gone bad.

[daniella3d]

Mine did similar after only a month or 2 of useage. How long do these things supposed to last?