Oxygen analyzer with trend and sensor self-protection function in air separation industry

Abstract

The invention relates to an oxygen analyzer with a trend and sensor self-protection function in the air separation industry. The oxygen analyzer comprises a data processing unit, a gas path unit, a sensor MV signal processing unit, a sensor MV signal processing unit, a power supply unit, a display storage operation unit, a signal output unit and an alarm unit, wherein the gas path unit, the sensorMV signal processing unit, the sensor MV signal processing unit, the power supply unit, the display storage operation unit, the signal output unit and the alarm unit are electrically connected with the data processing unit. According to the oxygen analyzer, the requirements of a user for inquiring the historical trend and carrying out signal remote transmission on the site can be met, data queryof 12 months can be stored, and meanwhile, when the oxygen content of the measured gas exceeds a set value, the measuring gas entering the oxygen sensor can be automatically cut off, self-protection is realized, and the oxygen sensor is prevented from being damaged. The service life of the sensor is prolonged.

Description

technical field [0001] This patent application belongs to the technical field of on-line analytical instruments for oxygen percentage detection in air separation systems, in particular to an oxygen analyzer with trend and sensor self-protection functions in the air separation industry. Background technique [0002] Air separation oxygen generator (hereinafter referred to as oxygen generator), during the production process, it is necessary to conduct online measurement of the percentage oxygen content of gas media such as argon fraction, oxygen content in air, and nitrogen and oxygen content in polluted air, and it is required to be able to check it at the equipment site Historical data, forming trend graphs, and comparative analysis of changes in oxygen content, so as to judge the argon working condition and nitrogen working condition of the oxygen generator, so as to guide the operator to adjust the operation. It is the eyes of the oxygen generator and needs to reflect the p...

AI Technical Summary

Problems solved by technology

At present, domestic oxygen analyzers can only display simply, without trend query function, and have shortcomings such as low measurement accuracy and large fluctuations in measurement data affected by ambient temperature. When the oxygen generator fails, the oxygen content will be serious. Exceeding the standard, low-pressure polluted gas will enter the detector, thereby damaging the sensor of the oxygen analyzer, and the sensor cannot be automatically cut off in time, which greatly shortens the service life of the sensor and cannot meet the requirements of the site.

Images