Water leak detection in electrical cabinet

Two possibilities,

1 Detection of the water by resistance. We find that reliable but we are normally dealing with saline

2 Capacitive detection. Add a sponge to the face of a capacitive proximity sensor which is facing the bottom surface of the cabinet. If water accumulates it will absorb into the sponge and trigger a response.

Good luck

Chas

what about the stickers that cell phone companies use that turn color when exposed to liquid (water) ?

I am looking for a reliable water leak detection device

Rather than a detector.....remove moisture by supplying refrigerated dehydrated dedicated air supply to remove it as it accumulates transferring "water" to refrigerator condensate outside the critical area.

MR. GUY

We did similar thing by measuring the temperature change of a small galvanized steel plate where the water would accumulate. It will work well fine if you can keep the collector plate at a relatively steady temp. We mounted several of these collectors as we had quite a large surface to protect, using solid-state temperature sensors. RH sensors will work very well also. as if you can adjust your alarm state to nearly or at 100%.

Wangito.

For long term reliability and freedom from false alarms you can't beat a tethered float with tilt switch sealed inside. The drawback is that it will require a high enough liquid level to actually tilt the float. If you can place it in a sump, the liquid level is less of a problem.

Thank you everyone,

Two good answers could be usable if I wanted to build my own but I was looking for suggestions on already existing products.

I will keep looking for a suitable manufacturer.

Well Marcot, you can use ceiling guard for leak detection. It will surely benefit you in detection, as soon as it encounters a water drop it will notify you.

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