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Discussion in 'Irrigation' started by FIMCO-MEISTER, Oct 20, 2010.
explain further please
Just curious, because I've seen my meters peg and never really knew what the bump was. My liquid-filled meters go to 125 psi and they pegged!
I've installed some 300 psi gauges when it looked like the 200 psi gauges were going to peg on a regular basis.
Russ has one of these, but I've not used it to measure spikes. www.dicksondata.com/matrix/pressure_products.php
Measuring pressure without gauges - http://en.wikipedia.org/wiki/Pressure_sensors
i have 2 watts spike or maximum reading gauges, the only thing that i don't like is that they're dry and tend to bounce a little i don't think a liquid filled would as much.
Doppler flow meters www.greyline.com/products.htm
what's this got to do with your statement "Dial gauges of any sort wouldn't do to measure instantaneous forces."
i love the badgers, answer the friggin question!
sorry, it's all that time i've been spending with kiril
You can't measure instantaneous forces with measuring devices that have moving parts, since those moving parts will be subject to inertial forces. The reading would lag the actual event, if it was even accurate in the first place. It will probably take a piezoresistive, or piezoelectric, sensor to get the job done.
makes sense, i installed some piezometers to log ground shift for a developer a number of years ago.
they're also used in well water and sewage studies.
but we can also look at the definition;
1. occurring with almost no delay; immediate
2. happening or completed within a moment instantaneous death
3. (Mathematics) Maths
a. occurring at or associated with a particular instant
b. equal to the limit of the average value of a given variable as the time interval over which the variable is considered approaches zero instantaneous velocity
instantaneousness , instantaneity [ɪnˌstæntəˈniːɪtɪ] n
Just how instantaneous this could be, for sake of measuring, I don't know. Figure on sensors hooked up to a storage oscilloscope. I'm certain the needle swings I saw on a 300 psi gauge were indicating pressures above 150 psi, and yet the Richdel 1-1/2 inch master valve didn't blow up.