Water flow sensor zero flow

huckw
Posts: 3
Joined: Mon Jan 14, 2013 12:32 pm

Water flow sensor zero flow

Postby huckw » Mon Jan 14, 2013 12:36 pm

I have one of the 3/4" water flow sensors (EWP-SNR106 ). I'm curious what the expected behavior is during times when no water is flowing (0 L/min)? Also, is it safe for residential drinking water applications?

Thanks

huckw
Posts: 3
Joined: Mon Jan 14, 2013 12:32 pm

Re: Water flow sensor zero flow

Postby huckw » Wed Jan 30, 2013 9:34 pm

It seems like I get 60Hz at zero flow...using the equation Q(L/min) = F(Hz)/5.5 that would mean Q=10.9L/min. Is this normal? Is there some sort of offset that has to be accounted for? Any ideas? One note, this is just sitting on lab bench, no actual water flow and no pressure....not sure if that matters or not. I'm powering with a 9V battery.

Tech_Marco
Posts: 4347
Joined: Mon Jun 15, 2009 3:00 pm

Re: Water flow sensor zero flow

Postby Tech_Marco » Fri Feb 01, 2013 11:23 am

I got to check mine here. It should be 'zero' if no water is flowing

Marco


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