Now get going! I have picked out the measured data of the two last year’s flowmeters with OLED display again, so that one can see how high such differences can turn out with the turbine sensors. In the range below 40 l/h, the high flow NEXT also becomes somewhat less accurate, but this is really only marginal. You will never be able to install the part so perfectly anyway that other influences could not cause a slight distortion.
I also counter tested with 90° and 45° angles. One should avoid it if possible especially at the entrance. With at least 10 cm straight section in the inlet, on the other hand, this works almost perfectly. It should be horizontal, of course. If vertical, then if possible so that enough pipe or hose remains at the inlet before the next bend or elbow. Rising or falling, it almost doesn’t matter. Compared to the almost 1000 euro Keyence, the performance is really shockingly good in the ideal case.
If we now look again at the deviation in l/h, we also see that the information in the specifications is really correct. The deviations, especially from approx. 120 l/h, are far below the tolerance limit and, moreover, completely irrelevant for the assessment of safe operation. In the low-flow range it starts to weaken a bit below 40 l/l, only here the relevance is also rather unimportant. After all, we do not want to deliver a calibrated measurement and whether it is 2 or 3 l/h more or less is rather unimportant for the PC.
On the other hand, if we look at the two competitor products, the creepiness factor rises towards Mount Everest. It’s like a standing tower clock that goes right at least twice a day. Colorful toy with display, but not even really usable as an indicator. So let’s just drop it and stop dragging our feet. Just ignore and be happy when you finally found something better. Especially since the other features up to the temperature measurement work quite accurately and provide useful data.
Summary and conclusion
Well, with around 70 Euros you are no longer in the Chinese no-man’s-land of sugary dumping prices, but in the end the price difference is smaller than you think. The added value, on the other hand, well. That’s not just a small jump, that’s a whole galaxy. That you get the parts so well calibrated ex works is a nice announcement, the functions next to the flow meter are a nice gain and the interface orgy then the icing on the cake.
If you just need a reliable measurement and evaluation of the circulation, the Aqua Computer high flow NEXT is the best choice, so that this time it was not even difficult for me to recommend it. On the contrary, I now have not only one. And as suspicious as I was, of course I compared them to each other. There are minimal deviations in some cases, but they are so small that they are well within the tolerance range. You can’t ask for more than that. Quiet, easy to handle and still cuddly small, that’s really an announcement.
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