System and method for pressure measurement
AssigneeAshcroft-Nagano, Inc.
InventorsWilliam Stephen Kosh, Yoshikazu Kaneko
Life of this patent
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Abstract
A system and method for pressure measurement may include the ability to readily produce a pressure measurement system. In one general aspect, a process for producing a pressure measurement system includes providing an assembly including a stem, a pressure detector, and a first circuit board. The pressure detector is operable to generate a signal based on pressure introduced through the stem, and the circuit board is operable to condition the signal. The process also includes compensating the assembly, determining a signal output type for a pressure measurement system that will include the assembly, and installing a second circuit board that produces the signal output type without materially affecting the compensation.
Claims24
A method for producing a pressure measurement system, the method comprising:
- providing an assembly comprising a pressure inlet joint, a pressure detector, and a first circuit board, the pressure detector adapted to generate a signal based on pressure introduced through the pressure inlet joint, the first circuit board adapted to generate an analog assembly output signal of a first signal type based on the signal;
- compensating the assembly;
- and
- installing a second circuit board, the second circuit board adapted to convert the assembly output signal to a predetermined analog output signal type while maintaining the total error of the converted output signal at less than one percent over a temperature range of at least 20° C., the output signal type comprising a multitude of values that correspond to values of the first signal type.
A pressure measurement system, the system comprising:
- a pressure inlet joint;
- a pressure detector coupled to the pressure inlet joint, the pressure detector adapted to generate a signal based on pressure introduced through the pressure inlet joint;
- a first circuit board coupled to the pressure detector, the first circuit board adapted to generate an analog output signal of a first signal type based on the signal, the pressure inlet joint, the pressure detector, and the circuit board having been compensated;
- and
- a second circuit board coupled to the first circuit board, the second circuit board adapted to convert the output signal to a predetermined analog output signal type while maintaining the total error of the converted output signal at less than one percent over a temperature range of at least 20° C., the output signal type comprising a multitude of values that correspond to values of the first signal type.
A method for producing a pressure measurement system, the method comprising:
- providing an assembly comprising a blank pressure inlet joint, a pressure detector, and a first circuit board, the pressure detector operable to generate a signal based on pressure introduced through the pressure inlet joint, the first circuit board adapted to generate an analog assembly output signal of a first signal type based on the signal;
- determining deviation of the assembly's output signal from a predefined output signal for a predefined pressure range and a predefined temperature range;
- compensating the first circuit board for the deviation;
- determining, after the assembly has been provided, an analog output signal type for a pressure measurement system that will comprise the assembly;
- installing a second circuit board, the second circuit board adapted to convert the assembly output signal to the output signal type while maintaining the total error of the converted output signal at less than one percent over a temperature range of at least 20° C., the output signal type comprising a multitude of values that proportionally correspond to values of the first signal type;
- determining an electrical connector assembly type for the pressure measurement system after the assembly has been provided;
- installing an appropriate electrical connector assembly for the determined electrical connector assembly type after the second circuit board has been installed, the electrical connector assembly adapted to convey the signal output type;
- installing a housing after the second circuit board has been installed, the housing coupled to the pressure inlet joint and, in conjunction therewith, enclosing the pressure detector, the first circuit board, and the second circuit board;
- determining a process interface type for the pressure measurement system;
- and
- modifying the pressure inlet joint to the process interface type after the assembly has been provided.
Dependencies are inferred from the claim text.