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Calibration device for exhaust gas analyzer

A calibration device and tail gas analysis technology, applied in the direction of standard gas analyzers, measuring devices, analysis materials, etc., can solve the problems of different data ports, communication protocols, and reduced versatility, so as to reduce material costs and achieve good steady-state accuracy Effect with dynamic response speed

Inactive Publication Date: 2017-01-04
ZHOUSHAN INST OF CALIBRATION & TESTING FOR QUALITY & TECHNICAL SUPERVISION
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, in actual operation, due to the different types, uses and standards of exhaust gas analyzers, their data ports and communication protocols are also different, which greatly reduces the versatility of this utility model

Method used

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  • Calibration device for exhaust gas analyzer
  • Calibration device for exhaust gas analyzer
  • Calibration device for exhaust gas analyzer

Examples

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] In the example, such as figure 1 As shown, a calibration device for an exhaust gas analyzer includes a gas distribution system 2 and a host 3 that provide a variety of standard gases for the instrument 1 to be tested; the gas distribution system 2 includes a gas mixing chamber 21, and the gas mixing chamber communicates with several A standard gas source 22, and a gas outlet 23 to be tested is set to the instrument 1 to be tested. A pressure reducing valve 24 and a mass flow controller 25 are arranged in sequence between the standard gas source 22 and the gas mixing chamber 21. The gas outlet for testing 23 is also provided with a mass flow controller 25, and the gas mixing chamber 21 is provided with some gas concentration sensors 26; It is connected to the signal input end of the host computer 3 and the gas concentration sensor 26 , and the ou...

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Abstract

The invention discloses a calibration device for an exhaust gas analyzer. The calibration device is used for reducing the material cost and labor cost of calibration working of the exhaust gas analyzer. The calibration device is characterized in that a host computer comprises a Fuzzy-PID compound control module, wherein the input end of the Fuzzy-PID compound control module is connected with the signal input end of the host computer and a gas concentration sensor and the output end of the Fuzzy-PID compound control module is connected with a control hole of a mass flow controller. A PID control algorithm is adopted by the Fuzzy-PID compound control module provided by the invention under a small deviation condition, a Fuzzy control algorithm is adopted under a large deviation condition, the stability performance and the dynamic performance are excellent and a gas distribution system has relatively high stability precision and relatively high dynamic response speed.

Description

technical field [0001] The invention relates to the technical field of supervisory inspection, in particular to a calibration device for an exhaust gas analyzer. Background technique [0002] With the rapid development of economy and science and technology, various exhaust gas analyzers have been widely used in scientific research, atmospheric environment monitoring, labor protection, chemical product production process control and other fields. Calibration or supervisory inspection of various exhaust gas analyzers to ensure the accuracy and stability of their measurement has become the obligatory duty of the technical supervision department. [0003] In order to meet the needs of the calibration of exhaust gas analyzers, the metrology department needs to purchase a large number of standard gases of different concentrations and types, so that the calibration cost of exhaust gas analyzers is greatly increased, and the waste is also very serious. The invention patent with aut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
CPCG01N33/0006
Inventor 张丽娜李存军刘瑛陈贤雷刘欢穆寅锋
Owner ZHOUSHAN INST OF CALIBRATION & TESTING FOR QUALITY & TECHNICAL SUPERVISION
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