On Fri, 31 Aug 2007 01:53:01 -0400, Miguel Pacheco <escorpion1955@YAHOO.COM> wrote: >That 'spiral tube' is called a bourdon tube. Widely used in industry, of >course, to measure psi and even as a switch.........just an FYI. Cheers. Yup, thanks for the info. BTW, I have here 3 air pressure meters, one pen-type and two dial-type, with only one of the latter with that so-called "bourdon tube". The other two are of the spring-loaded piston-cylinder type, not safe for fuel because the seal relies on the sealing of a moving plastic piston, which isn't safe inherently and also might be attacked by the fuel. I opened the bourdon tube one up and the pressure path is all metal (except for the o-rings) and can handle 100psi, so I guess it might be OK, once I find an adapter. |
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