Is the ALD solid surface probe submersible?

[fablau]

Hello everyone,
This may sound like a stupid question, but I just got my leak detector with a couple of ALD probes, and I was wondering if they are completely submersible. I'd like to be able to put one of these probes inside by tank overflow, at the top of it and outside of water during regular use, but if something should ever go wrong and the water level inside the overflow should ever raise, the ALD probe could be completely submerged, hence the "leak" detection... Would that damage the probe in some way, or are they completely water-proof?

Thanks in advance for any help on this.

[aquamanic]

No - there's a circuit board inside them and they're not sealed.

[fablau]

Ok, That's what looked to me too... Unfortunately Neptune doesn't provide detailed instructions about how and where those sensors can be placed. Can be placed inside a sump even if humidity is pretty high? What level of water is safe for the sensor measuring from the sensor side? 1-2mm? Less? More?

[jrlamountain]

A wet finger will set them off they are very sensitive

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[fablau]

Ok, I think to have understood how to deal with these things. I will make some tests. Thank you again for your help.

[Coralreef1]

I guess I got lucky. I have one in the bottom of my stand and fiberglassed the inside of my stand with a four inch pan and put a bulk head in the back connected it to a drain line to my sewage. Well while testing the system with fresh water I had the float set wrong and flooded the pan out. Even with the bulk head I still had enough RO water covering the whole sensor. I never heard the email are alarm going off. I pulled it out of the water and shook it off and it went back open. I have tested it three to four times since and works great. Now I have programmed all kind of turn off programs.


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[fablau]

Sounds good! Looks like these sensors stands water pretty well despite they are not really "submersible". Thanks!

[Evan K.]

Why not use a float switch in the overflow to set an alarm if the overflow is getting backed up?

[Druke]

We had an incident where our sump tank had overflowed and the ALD prob was in the bottom ended up being completely submerged for at least 5 minutes. We were out of the room when the alarm had gone off and didn't have the email set up correctly. The probe is showing "CLOSED" after a day still... any luck with it going back to "Open" or is it shot?

Thanks

[RussM]

Disconnect it. Open it by removing the two screws. Rinse thoroughly with fresh water. Let dry completely. Reassemble and see if it works.

That worked for me after one of mine got immersed.

[Paul]

Another solution is to place it in a bag of dry rice to absorb all the moisture. If there is corrosion on the surface board, then some work with some steel wool will do the trick.