Measuring and testing – Fluid pressure gauge – Mounting and connection
Patent
1985-07-15
1987-03-31
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
Mounting and connection
73431, 73718, 73724, 361283, G01M 708, G01M 912, G01M 1306, G01M 1914
Patent
active
046533303
ABSTRACT:
A pressure transmitter housing for mounting an internal sensing cell, and having two sections that provide integral pressure connecting flanges for differential pressure sensing, and provide proper clamping pressure and seals on the sensing cell. The housing sections also provide a space for all transmitter circuitry in a toroidal chamber defined in the housing and surrounding the sensing cell. Each of the housing sections has a sealing surface for sealing against the outer ends of a differential pressure sensing cell, and clamping the ends of the cells together under compressive load using external clamping bolts. One of the housing sections has a terminal strip to connect to external power supply wires. The housing sections are easily cast and machined, and will accommodate the necessary dimensional tolerances needed for manufacturing processes in making the sensing cells. Low cost manufacturing is achieved by combining the function of the sensing cell clamp in flanges and circuit housing and at the same time providing the necessary pressure connection flange functions.
REFERENCES:
patent: 3247719 (1966-04-01), Chelner
patent: 3618390 (1971-11-01), Frick
patent: 4176557 (1979-12-01), Johnston
patent: 4414851 (1983-11-01), Maglic
patent: 4460290 (1984-07-01), Mallet
Bourns Instruments, Inc. pamphlet, 6 pages.
Pressure Transducer Type 4-351 pamphlet, by Bell & Howell, 2 pages.
Model 1151 DP Alphaline Differential Pressure Transmitter, Product Data Sheet 2256 by Rosemount Inc., 6 pages.
Model 5020 pamphlet , by Bournes, 2 pages.
Rosemount Inc.
Woodiel Donald O.
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