Data processing: measuring – calibrating – or testing – Measurement system – Pressure
Patent
1997-01-31
1999-05-04
Barlow, John
Data processing: measuring, calibrating, or testing
Measurement system
Pressure
702 99, G01C 2500
Patent
active
058999620
ABSTRACT:
A two-wire transmitter senses differential pressure, absolute pressure, and process temperature of a process fluid. The information can be used to provide an output representative of mass flow through a pipe. The transmitter has an electronics module housing attached to a sensor module housing. The sensor module housing contains all the sensors for the pressures and includes a boss input for receiving a signal representative of a temperature or pressure signal. The three process variables are appropriately digitized, and received by an electronics circuit board in the electronics housing including a microprocessor for calculating the mass flow. The microprocessor in the electronics housing also calculates a compressibility factor and a discharge coefficients according to a polynomials of specific forms. The boss is integral to the sensor module housing and is adapted to fit either shielded twisted pair cabling or conduit.
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Bischoff Brian J.
Broden David A.
Corpron Gary P.
Louwagie Bennett L.
Munson Gregory S.
Barlow John
Miller Craig Steven
Rosemount Inc.
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