Gas analyzer calibration device

Abstract

The invention relates to a gas analyzer calibration device, comprising a standard gas source, the standard gas source is connected to the air inlet of a gas distribution device through a pipeline, the gas outlet of the gas distribution device is connected to the gas box inlet through a pipeline, and the gas distribution device is a gas analysis device. The instrument calibration provides different concentrations and different types of standard gases. The gas box outlet is connected to the pump inlet through a pipeline, the pump outlet is connected to the gas analyzer to be calibrated, and the gas analyzer outlet is connected to the residual gas recovery device. breath. The invention can automatically configure multiple standard gases of different types and concentrations, and the metering department does not need to purchase a large number of standard gases of different concentrations and types, so that the calibration of the gas analyzer becomes easy, the calibration speed is fast, and the accuracy rate is improved. The operation is simple, and the residual gas recovery device is installed to avoid leakage, thereby avoiding gas waste, cost saving, no pollution to the environment, and no threat to the health of calibration personnel.

Description

Technical field: [0001] The invention belongs to the technical field of gas analyzer calibration and verification, and in particular relates to a gas analyzer calibration device. Background technique: [0002] With the rapid development of economy and science and technology, various gas analyzers have been widely used in scientific research, atmospheric environment monitoring, labor protection, chemical product production process control and other fields. Calibration or verification of various gas analyzers to ensure the accuracy and stability of their values ​​has become the obligatory duty of the technical supervision department. When testing gas analyzers, the correct use of standard gases is the key to calibration or verification. [0003] With the development of gas analysis technology, gas analyzers can analyze more and more types of gases, and the measuring range of gas analyzers is also wider and wider. Measurement staff often need to prepare a variety of standard...

AI Technical Summary

Problems solved by technology

[0005]At present, the metrology department needs to purchase a large number of standard gases of different concentrations and types to meet the needs of gas analyzer calibration, which makes the calibration cost of gas analyzers greatly increase, it is also easy to cause waste

For this reason, relevant domestic units have successively developed standard gas dilution devices and multi-component dynamic gas distribution systems, but the former can only dilute one standard gas, and the degree of automation is not high. Requires supporting equipment for flow control

The latter can prepare a mixture of up to four standard gases at the same time, and the output flow is controllable, but it is not enough to meet the verification and calibration work of more component compound gas analyzers, and this device is limited to the preparation of standard gases and does not have Data processing, report generation and other functions

[0006] In addition, the existing gas analyzers are calibrated using standard gas sources, pressure reducing valves, flowmeters, calibration hoods and other tools for single calibration, and the calibration speed slow, the calibration efficiency is low, the calibration accuracy is not high, and it is easy to cause the leakage of the standard gas used for calibration, resulting in waste, polluting the environment, increasing the cost, and also posing a threat to the personal health of the calibration personnel

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