Calibration device and method for a pressure module

Abstract

The invention discloses a correcting device and method of a pressure module. The correcting device comprises a correcting chamber in which a pressure module base is disposed; the pressure module base comprises a communication board which connects data output ends and correcting coefficient input ends of pressure transmitter modules in the pressure module; the communication board is connected to the correcting device arranged outside the correcting chamber, through a data line; the correcting chamber is provided with a gas hole; a pneumatic adjuster is connected to the correcting chamber through the gas hole; a heater comprises at least one heating plate evenly mounted on the inner wall of the correcting chamber; a pressure acquirer and a temperature acquirer are disposed within the correcting chamber and are connected to the correcting device through data lines. The correcting device and method has the advantages that pressurizing and heating are achieved with the single correcting chamber, heating speed of the correcting chamber is increased, correcting period of the pressure module is shortened, and the pressure module can be corrected more efficiently.

Description

technical field [0001] The invention relates to the field of pressure transmitter manufacturing, in particular to batch calibration equipment for pressure modules during the production process of pressure transmitters. Background technique [0002] At present, for the production of pressure transmitters, due to differences in the production environment, differences in components and other reasons, the measurement data of the pressure transmitters completed in the initial production are not accurate. Therefore, in the production process of the pressure transmitter, it is necessary to uniformly calibrate the pressure transmitter, so that the calibrated pressure transmitter can output accurate measurement data. [0003] A pressure module is an intermediate product in the pressure sensor production process, which is a circuit board with multiple pressure transmitter circuits. The batch calibration of pressure transmitters is the calibration of pressure modules. After calibratio...

AI Technical Summary

Problems solved by technology

[0005] In the existing production process, two devices, the pressure chamber and the oven, are used to calibrate the pressure module. Therefore, a larger-capacity oven is required to accommodate the pressure chamber, which in turn increases the investment in equipment.

At the same time, due to the large overall tooling structure, the temperature of the oven changes slowly, prolonging the calibration time of each batch of pressure modules and reducing production efficiency

It has become the bottleneck of mass production of pressure transmitters

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