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A method and control device for adaptive humidity generation based on shunt method

A technology of humidity generation and control device, applied in mixing methods, chemical instruments and methods, transportation and packaging, etc., can solve the problem of high dew point temperature, and achieve the effects of wide humidity range, low cost and simple structure

Active Publication Date: 2020-01-17
NANJING TECH UNIV
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  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide an adaptive humidity generation method and control device based on the shunt method, so that the dew point can reach -60°C, and improve the problem of high dew point temperature in the existing humidity generator

Method used

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  • A method and control device for adaptive humidity generation based on shunt method
  • A method and control device for adaptive humidity generation based on shunt method
  • A method and control device for adaptive humidity generation based on shunt method

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] Such as figure 1 Shown is the composition block diagram of this humidity generation control device. The device is mainly composed of a humidity generator and a computer upper computer. The main components of the humidity generator are: primary dry gas mass flow controller, primary wet gas mass flow controller, secondary dry gas mass flow controller, secondary wet gas mass flow controller, saturator, temperature and Pressure sensor, lower computer controller. The computer upper computer is used for real-time communication with the humidity generator, controls the humidity generator to automatically generate the gas with the set dew point temperature, and monitors the actual output flow rate and saturator temperature of the humidity generator's four-way mass flow controller.

[0020] Such as figure 2 Shown is the schematic of the hu...

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Abstract

The invention discloses an adaptive humidity generation method and a control device based on a shunt method, which is composed of a humidity generator and a computer upper computer. The main components of the humidity generator are: four mass flow controllers, saturators, temperature and pressure sensors, and lower computer controllers. The control of the moisture and humidity generated by the generator is realized by controlling the lower computer controller from the computer upper computer, thereby controlling the four-way mass flow controller to mix the four-way gas in proportion. The invention has simple structure and low cost, and the generator can automatically generate the gas with fixed humidity by inputting the generated humidity on the computer. The moisture dew point range of the present invention can reach -60°C to 10°C.

Description

technical field [0001] The present invention relates to a humidity generation method and control device, more specifically, the present invention relates to an adaptive humidity generation method and control device based on a shunt method, which can automatically generate standard humidity gas. Background technique [0002] Nowadays, the role of humidity measurement in the fields of industrial and agricultural production, environmental protection, military equipment and even life safety is becoming more and more obvious. As the most precise method among many humidity measurement methods, dew point measurement is widely used in various humidity measurement instruments and meters . However, no matter what principle or equipment is used to measure the dew point, the change of the working temperature environment will cause the temperature drift of the sensor; the long-term use of the device will change its performance; factors such as the drift of the analysis and detection circ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F3/02B01F15/04G01N25/66B01F23/10
CPCG01N25/66B01F23/191B01F35/2113B01F35/2115B01F35/2211B01F35/83
Inventor 蒋书波王森王旭刘方远
Owner NANJING TECH UNIV
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