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Old 03-02-2017, 06:58 PM   #16
jakeru
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Join Date: May 2015
Location: Greater Seattle, WA
Posts: 534
I've not yet had opportunity to put it to actual use in a real project yet, but I picked up an inexpensive EBay model.


I have been able to verify that it works, but as far as I can tell, it doesn't seem to have a "re-zero" feature, like the alternate low-price model options posted above may have. (It does have a "compare" feature which basically accomplishes the same thing, but it needs to be manually activated to re-zero after powering up each time. It's not off from zero a big amount, a small fraction of an inch of water. It's just sort of a minor annoyance that it doesn't read exactly "0.00". )

I will say I very much like the compact size, but perhaps they are all similarly sized. (For reference, its smaller than my Fluke digital multimeter.) I believe it will work great for doing basic diagnostic work. First project I'll probably use it on it is tankless water heater supply gas pressure diagnostics.

But I can already tell it's much more compact, convenient, so much more precise, (and hopefully more accurate) than my home-made "water U-tube" manometer, which I made years ago and got some good use out of on a home-made airflow tester, which I used very effectively for custom racing intake manifold development.
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