Industrial process transmitter with high static pressure isolation diaphragm coupling
First Claim
1. A process transmitter for measuring a process variable, the process transmitter comprising:
- a sensor module comprising a sensor for measuring a process variable of an industrial process and for generating a sensor signal, wherein the sensor includes a hydraulic fluid inlet within the module; and
a first static pressure coupling connected to the sensor module, the first static pressure coupling comprising;
a first isolator fitting inserted into the sensor module and connected to the hydraulic fluid inlet;
a first process fluid coupling joined to the first isolator fitting; and
a first isolation diaphragm positioned between the first isolator fitting and the first process fluid coupling outside of the sensor module.
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Accused Products
Abstract
A process transmitter for measuring a process variable comprises a sensor module and a static pressure coupling. The sensor module comprises a sensor for measuring a process variable of an industrial process and for generating a sensor signal. The sensor includes a hydraulic fluid inlet within the module. The static pressure coupling is connected to the sensor module and comprises a isolator fitting, a process fluid coupling and an isolation diaphragm. The isolator fitting is inserted into the sensor module and connected to the hydraulic fluid inlet. The process fluid coupling is joined to the isolator fitting. The isolation diaphragm is positioned between the isolator fitting and the process fluid coupling outside of the sensor module.
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Citations
25 Claims
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1. A process transmitter for measuring a process variable, the process transmitter comprising:
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a sensor module comprising a sensor for measuring a process variable of an industrial process and for generating a sensor signal, wherein the sensor includes a hydraulic fluid inlet within the module; and a first static pressure coupling connected to the sensor module, the first static pressure coupling comprising; a first isolator fitting inserted into the sensor module and connected to the hydraulic fluid inlet; a first process fluid coupling joined to the first isolator fitting; and a first isolation diaphragm positioned between the first isolator fitting and the first process fluid coupling outside of the sensor module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A pressure transmitter for use in industrial process control systems, the pressure transmitter comprising:
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a sensor module comprising; a differential pressure sensor for sensing a pressure differential in a process fluid; a housing in which the differential pressure sensor is positioned; a co-planar base having first and second receiving bores; and first and second isolation tubes extending from the differential pressure sensor toward the first and second through bores, respectively; a process fluid connection comprising; first and second isolator fittings inserted into the sensor module through the first and second receiving bores, respectively; first and second process fluid couplings joined to the first and second isolator fittings, respectively; and first and second isolation diaphragms positioned between the first and second isolator fittings and the first and second process fluid couplings, respectively; and a transmitter module connected to the sensor module, the transmitter module containing transmitter circuitry for processing output of the pressure sensor. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A coupling for connecting a process transmitter to a process fluid, the coupling comprising:
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an isolator fitting body comprising; a corrugated pressure chamber face; an isolator flange surrounding the corrugated pressure chamber face; an elongate neck extending from the isolator fitting body; and a through-hole extending through the elongate neck and the isolator fitting body to intersect the corrugated pressure chamber face; a process fluid coupling body comprising; a first surface conjoined with the isolator flange of the isolator fitting body; a second surface having a process inlet port; a through-bore extending from the process inlet port to the first surface to face the corrugated pressure chamber face; and an isolation diaphragm disposed between the first surface of the process fluid coupling body and the isolator flange of the isolator fitting body. - View Dependent Claims (23, 24, 25)
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Specification