Need for a clamp-on pressure meter?
Need for a clamp-on pressure meter?
(OP)
I have a method for measuring pipe pressure with a field/clamp-on system. Before I develop this further I would like to know if there are any applications for this.
The method works with measuring how vibrations change with stress and measures absolute pressure when attached to a pipe (without calibration).
The accuracy depends heavily on the diameter and wall thickness. The best accuracy is for thin walled large diameter pipes.
A realistic estimated accuracy is within 0.4 bars for a 4” schedule 40 pipe.
The free length of the pipe should be at least 10 times the diameter
Metal or plastic pipes are ok but concrete or ceramics are not.
The pipe needs to be free, so that it’s not covered with soil or insulation.
I greatly appreciate any feedback.
The method works with measuring how vibrations change with stress and measures absolute pressure when attached to a pipe (without calibration).
The accuracy depends heavily on the diameter and wall thickness. The best accuracy is for thin walled large diameter pipes.
A realistic estimated accuracy is within 0.4 bars for a 4” schedule 40 pipe.
The free length of the pipe should be at least 10 times the diameter
Metal or plastic pipes are ok but concrete or ceramics are not.
The pipe needs to be free, so that it’s not covered with soil or insulation.
I greatly appreciate any feedback.





RE: Need for a clamp-on pressure meter?
The pipes are small, with thick walls, and suffer really big pressure spikes. Field installable sensors are available, but they assume that you're going to leave the sensor on the engine permanently; not applicable in my case.
Mike Halloran
Pembroke Pines, FL, USA
RE: Need for a clamp-on pressure meter?
Be pretty dang cool though!
You should probably ask this in forum378: Pipelines, Piping and Fluid Mechanics engineering.
The difference between these two forums is enough to not consider it a cross-post.
Keith Cress
kcress - http://www.flaminsystems.com
RE: Need for a clamp-on pressure meter?
David Simpson, PE
MuleShoe Engineering
Law is the common force organized to act as an obstacle of injustice Frédéric Bastiat
RE: Need for a clamp-on pressure meter?
If this thing were portable and could be taken around to see what the relative pressures at various locations and repeatable enough so that an estimate of the error could be made at spot where there was working pressure gauge, he would find a use for it.
RE: Need for a clamp-on pressure meter?
Valuable advice from a professor many years ago: First, design for graceful failure. Everything we build will eventually fail, so we must strive to avoid injuries or secondary damage when that failure occurs. Only then can practicality and economics be properly considered.