Inclination measurement in process transmitters
First Claim
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1. A process transmitter for measuring a process variable, the process transmitter comprising:
- a process sensor for sensing the process variable of a process;
an inclination sensor for sensing a stationary orientation of the process transmitter;
transmitter circuitry for producing an output based on the sensed process variable and the sensed stationary orientation; and
an LCD screen having a display output based on the output of the circuitry, and wherein the circuitry adjusts an orientation of the display output based on the stationary orientation of the transmitter sensed by the inclination sensor.
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Abstract
A process control system includes a process sensor, an inclination sensor and transmitter circuitry. The process sensor senses the process variable of a process fluid and the inclination sensor senses the orientation of the transmitter. The transmitter circuitry produces an output based on the sensed process variable and the sensed orientation.
19 Citations
29 Claims
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1. A process transmitter for measuring a process variable, the process transmitter comprising:
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a process sensor for sensing the process variable of a process; an inclination sensor for sensing a stationary orientation of the process transmitter; transmitter circuitry for producing an output based on the sensed process variable and the sensed stationary orientation; and an LCD screen having a display output based on the output of the circuitry, and wherein the circuitry adjusts an orientation of the display output based on the stationary orientation of the transmitter sensed by the inclination sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for adjusting an output of a process transmitter, the method comprising:
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sensing a process variable of a process with a process sensor to produce a sensor signal; sensing a stationary orientation of the process transmitter with an inclination sensor to produce an orientation signal; conveying the process variable to the process sensor with hydraulic fill fluid, wherein the fill fluid produces a head effect on the process sensor based on the stationary orientation of the process transmitter wherein the transmitter circuitry calibrates the output to account for a change in head effect resulting from a change in the stationary orientation of the transmitter, wherein the calibration utilizes the stationary orientation of the transmitter sensed by the inclination sensor; and producing an adjusted transmitter output with transmitter electronics, the transmitter output being based on the sensor signal and the orientation signal. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A process transmitter for measuring a process variable, the process transmitter comprising:
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a process sensor for sensing the process variable of a process; an inclination sensor for sensing an orientation of the process transmitter; a hydraulic fill fluid for conveying the process variable to the process sensor, wherein the fill fluid produces a head effect on the process sensor based on the orientation of the process transmitter; transmitter circuitry for producing an output based on the sensed process variable and the sensed orientation, wherein the transmitter circuitry calibrates the output to account for a change in head effect resulting from a change in the orientation of the transmitter, wherein the calibration utilizes the orientation of the transmitter sensed by the inclination sensor. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification