81899Re: [Electronics_101] Re: Inexpensive GPM meter
- May 8 10:59 AMCertainly, as suggested by others, timing how long it takes to fill a
container is the lowest cost approach.
For an electronic approach you could use 3 flow meters like the
following connected in parallel.
25 GPM = 94.6 liters per minute.
To ensure the low is determine mainly by the 1 1/4 inch pipe you will
need at least 15 inches of 1 1/4 inc pipe connected to both sides of the
flow meters. See
<http://mdmetric.com/tech/thddat7.htm> for information on British BSP
G1/2 threads. If you have a short time frame this approach will not
work. There is a 2 to 3 week shipping time from China.
Another option is to use an orifice and a differential pressure transducer.
Yes a smaller diameter of pipe would be an indication of flow. But how
would you calibrate this type of flow meter?
The other Howard
On 5/8/2013 6:59 AM, normnet2003 wrote:
> I just need a temporary meter to determine the maximum flow rate to
> select the right mixing valve.
> I am hoping to find a paddle wheel with a magnet and count pulses with
> a PIC or a spring loaded paddle on a potentiometer to measure the
> water push angle etc.
> Perhaps a smaller diameter pipe with a pressure differential would be
> an indicator of flow?
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