A pressure transmitter debugging and checking method

By integrating temperature sensing elements and constructing a multiphysics model in the pressure transmitter, thermal and mechanical hysteresis errors are calculated and compensated in real time, solving the problems of long calibration cycles and decreased measurement performance in existing technologies, and achieving efficient and accurate pressure transmitter calibration.

CN121347053BActive Publication Date: 2026-03-20BAOJI XINGYUTENG MEASURE & CONTROL INSTR CO LTD
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Patent Information

Application Number
CN202511927033.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-12-19
Publication Date
2026-03-20
Estimated Expiration
2045-12-19

AI Technical Summary

Technical Problem

Existing calibration methods for pressure transmitters cannot effectively identify and eliminate thermal and mechanical hysteresis errors in unsteady environments, leading to decreased measurement performance and lengthy calibration cycles.

Method used

By integrating a temperature sensing element into a pressure transmitter, a thermal hysteresis evolution model and a viscoelastic hysteresis error model of the filling liquid are constructed. The nonlinear least squares optimization algorithm is used to solve the errors caused by thermal imbalance and material viscoelasticity in real time, and a real pressure reconstruction model is constructed to achieve real-time compensation and prediction of errors.

Benefits of technology

It achieves efficient error decoupling and compensation in unsteady environments, shortens the calibration cycle, improves measurement accuracy and production efficiency, and endows the equipment with self-correction capabilities.

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Abstract

The present application relates to the technical field of industrial automation instrument and intelligent sensor detection, in particular to a pressure transmitter debugging and checking method; comprising parameter acquisition, thermal hysteresis evolution, error calculation and pressure reconstruction module; the method collects temperature and pressure data in non-steady state environment; the core is to calculate the internal temperature by using the filling liquid thermal hysteresis model, combine the transient pseudo pressure with the viscoelastic hysteresis error model, calculate the error caused by thermal imbalance and material hysteresis, and reconstruct the real steady state pressure; the present application realizes the change from static waiting to dynamic prediction, eliminates the thermal balance waiting time through prediction, and greatly improves the production efficiency.
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