Pressure pickup with flame penetration barrier

Details Pressure pickup with flame penetration barrier Pressure pickup with flame penetration barrier

2008-07-15

2008-07-15

Allen, Andre J. (Department: 2855)

Measuring and testing

Fluid pressure gauge

With protective separator

Reexamination Certificate

active

10551221

ABSTRACT:
A pressure pickup includes a pressure measuring cell and a platform through which a pressure canal equipped with a flame penetration barrier extends. The pressure measuring cell is loadable with the process pressure through the pressure canal by means of a transmitting medium. The pressure canal includes a first section and a second section, with the flame penetration barrier being arranged in a first section, and a second section has a bore, in which a fill-body is arranged. The gap between the bore and the fill-body is manufactured with greater tolerances, so that it does not fulfill the requirements for a flame penetration barrier. The flame penetration barrier is realized in the first section, for example, by providing in the first section a bore, in which a fill-pin is arranged, with the remaining gap between the bore and the fill-pin satisfying the requirements for a flame penetration barrier.

REFERENCES:
patent: 4733563 (1988-03-01), Nava et al.
patent: 5583294 (1996-12-01), Karas
patent: 6038927 (2000-03-01), Karas
patent: 6279401 (2001-08-01), Karas

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