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Control system and combination system and method for multiple standard gas generators

A standard gas and control system technology, applied in general control systems, control/regulation systems, chemical instruments and methods, etc., can solve the problems of inability to realize the interconnection of standard gas generators, cumbersome calculation process, limited hardware gas circuit, etc. Achieve the effect of being beneficial to experiment and detection, uniform gas mixture, and eliminating calculation

Active Publication Date: 2017-06-09
BEIJING SDL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current standard gas generator is only used for a single unit, limited to the hardware gas circuit, and each standard gas generator can only be used for a single dilution of a certain standard gas
However, sometimes the operator needs to generate a mixed gas, which requires the operator to set up multiple standard gas generators separately. When setting, the gas flow of different gas outlets needs to be calculated. The calculation process is cumbersome, and the standard gas generator cannot be realized. Interconnection, which is not conducive to the conduct of experiments or inspections

Method used

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  • Control system and combination system and method for multiple standard gas generators

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Embodiment 1

[0034] The embodiment of the present invention needs to dilute three kinds of standard gases simultaneously, the first standard gas (SO 2 : 100ppm), the second standard gas (NO: 100ppm), the third standard gas (CO: 50ppm), a mixture of three gases (SO 2 : 10ppm, NO: 10ppm, CO: 10ppm), the mixed gas flow rate is 1000mL / min. A single standard gas generator can only dilute one of the gases, and there is no way to dilute three standard gases at the same time.

[0035] Such as figure 1 As shown, in order to achieve the above purpose, the embodiment of the present invention provides a system of three standard gas generators in conjunction, including: a first standard gas generator 100, a second standard gas generator 200, and a third standard gas generator 300 and mixed gas outlet 400.

[0036] The first standard gas generator 100 includes: a first micro-control unit 101 , a first mass flow controller A102 , a first mass flow controller B103 , a first dilution gas port 104 and a ...

Embodiment 2

[0051] The standard gas used in the embodiment of the present invention and the mixed gas obtained are the same as in Embodiment 1, and the system used is also the same.

[0052] The method for using the system to realize the combination of three standard gas generators provided by the embodiment of the present invention includes the following steps:

[0053] 1. Connect N to the first dilution gas port 2 , the first standard air port is connected to SO 2 , the second dilution gas port is suspended, the second standard gas port is connected to the standard gas NO, the third dilution gas port is suspended, and the third standard gas port is connected to the standard gas CO.

[0054] 2. Select the first MCU as the master, and the second MCU and the third MCU as slaves.

[0055] 3. Set the number of connected slaves on the master to 2, and establish a wireless connection between the master and the two slaves.

[0056] 4. Input the mixed gas outlet flow value 1000mL / min, SO 2 T...

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Abstract

The invention discloses a control system and a combination system and method for multiple standard gas generators. The control system is used for controlling combination of the standard gas generators, each standard gas generator is provided with a micro control unit, one micro control unit is a host, other micro control units are slaves, and the host is connected with the slaves. The combination system and method utilizes the control system to realize combination of the standard gas generators. A single standard gas generator is taken as an independent module, so that combination of any mixed gases can be realized easily without changing hardware structure, and the control system is convenience and reliable.

Description

technical field [0001] The invention belongs to the technical field of standard gas generating devices, and in particular relates to a control system, a combined system and a method for generating mixed gas by combining a plurality of standard gas generators. Background technique [0002] Standard gas refers to the gas with uniform concentration, good stability and accurate value. In the fields of physical, chemical, biological and engineering measurement, standard gas is used to calibrate measuring instruments and measurement processes, evaluate the accuracy of measurement methods and the detection capabilities of testing laboratories, determine the characteristic values ​​of materials or products, and conduct quantitative arbitration, etc. . [0003] The standard gas generator uses the principle of proportional dilution to perform proportional dilution of existing standard substances, including dilution between gases and gases and dilution between gases and liquids (quant...

Claims

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Application Information

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IPC IPC(8): B01F3/02B01F15/00B01F15/04G05B19/042B01F23/10
CPCG05B19/0423B01F23/19B01F35/2218B01F35/883
Inventor 敖小强韩占恒
Owner BEIJING SDL TECH