Replace Probes

[ebaygul]

I've been using Profilux II Plus for a very long time, May you please tell me if I need to replace PH PROBE and TEMP PROBE ? If yes, when do I need to replace them?

[Gunther]

The temperature probe doesn´t age, you can use it as long it´s not broken.
The ph probe is aging, so you have to recalibrate it frequently. Read the manual how to do so.

If the profilux doesn´t accept the probe anymore, you can increase measurement tolerance to use the probe further wit less accuracy.
Lately at that point you should order a new probe.

[Antipodes]

I've been using Profilux II Plus for a very long time, May you please tell me if I need to replace PH PROBE and TEMP PROBE ? If yes, when do I need to replace them?

Personally. If it is a low cost probe, I replace them yearly.
If it is a GHL hi quality probe, then it will probably last 2 years or possibly longer.
The older they are the slower the ability to change seems to be. A old probe may show very slow change of PH even if you add something like Kalk to the sump which raises the PH rapidly. Also very slow to calibrate.

[BigAl07]

Personally. If it is a low cost probe, I replace them yearly.
If it is a GHL hi quality probe, then it will probably last 2 years or possibly longer.
The older they are the slower the ability to change seems to be. A old probe may show very slow change of PH even if you add something like Kalk to the sump which raises the PH rapidly. Also very slow to calibrate.

That's a very good rule of thumb!!