capacitive sensor (40cm cable length)
capacitive sensor mount w/magnet
programmed chip (IC) - the chip is not available on its own!
no electronics skill is needed but it will require opening the controller and removing and replacing the programmed chip (mounted on a socket so a little care needed - see thumbnail)
Had the ATU Pro3 since setting up my marine tank for a good number of years now but the optical sensor started failing. Anyway after a few emails to Gordon I decided to upgrade the sensor and chip to the new capacitive one from the ATU Pro4 and after the initial calibration its been working faultlessly and it seems to monitor it more precisely than the optical. I'm happy and my wallet's happy too 👍🏻
Good timing really as I've just, well 2 hours ago done the upgrade, took all of 5 minutes, am I pleased, hell yes, after fitment I did a trial test with a jug of ro, the accuracy is amazing, with a 1 litre jug half full of ro, removing just 3ml with a syringe would trigger the pump, adding the 3ml back to the jug stopped the pump, am I pleased..........very
My old sensor stopped working after giving sterling service so upgraded to the new style. Fitting was easy with the enclosed instructions, however, it would not work as I expected. Taking a look on the Reefloat website showed me that I needed to calibrate the sensor once fitted to my sump. Hey presto, it works great and is a welcomed addition. Lets see how they get on long term.
Gordon, it would be superb if you could include the calibration instructions within the paper work you send out.
This was really easy to install as a replacement for the optical sensor. Very happy with the performance as it seems to give small and frequent top ups which can only help stability.
Only issue I had was recalibration of the sensor due to where it is installed in a reefer V3 sump.
If you are thinking if upgrading my advice would be to grab one when they come in stock and do i