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Device for detecting gas humidity with infrared light

A technology for detecting gas and infrared light, which is applied in the direction of measuring devices, material analysis through optical means, instruments, etc., can solve the problems of low measurement range, low resolution, small range, etc., and achieve improved test accuracy, high detection accuracy, The effect of long service life

Active Publication Date: 2014-10-15
LABTHINK INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many methods for detecting gas humidity in China, such as: dynamic method, static method, dew point method, dry and wet method and various electronic sensor methods, etc. These methods are often used in the gas environment with high humidity, but their resolution lower rate, lower precision
In addition, there are electrolytic sensor method, humidity sensor method, etc. The electrolytic sensor method can only measure the humidity of gas with very low humidity, and it is easy to damage the equipment when measuring ordinary air. The measurement range is low and the range is small.
The humidity sensor used in the humidity sensor method has poor anti-pollution performance, and is easily polluted and has poor stability when placed in the environment to be tested.
Comprehensive comparison, the current domestic existing test methods have certain limitations

Method used

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  • Device for detecting gas humidity with infrared light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The device for detecting gas humidity with infrared light includes an upper cover 4, a lower cover 10 and a control device 1, the lower part of the upper cover 4 is provided with a hole I8, and the upper part is provided with a hole II12, and the upper cover 4 and the lower cover 10 are sealed by a fastener 14 Connection, forming cavity 7 inside, cavity 7 is provided with light pipe, the two ends of light pipe are connected with optical fiber, optical fiber is connected with control device 1, light pipe is sealed with upper cover 4, and several holes III6 are arranged on light pipe, control device A transmitter for emitting infrared light and a detector for receiving infrared light are arranged inside. The cavity 7 is provided with two light pipes, that is, light pipe I5 and light pipe II13. Light pipe I5 and light pipe II13 are connected through optical fiber II9. Light pipe I5 and light pipe II13 are respectively connected to control device 1 through optical fiber I2 a...

Embodiment 2

[0020] On the basis of Embodiment 1, a light pipe is provided in the cavity 7, and both ends of the light pipe are connected to the control device 1 through optical fibers. For other references to Embodiment 1, details are not repeated here.

Embodiment 3

[0022] According to actual needs, a plurality of light pipes connected in series are arranged in the cavity 7, and the beginning and end ends are connected to the control device 1 through optical fibers. For other references to Embodiment 1, details are not repeated here.

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Abstract

The invention discloses a device for detecting gas humidity with infrared light. The device comprises an upper cover, a lower cover and a control device, wherein a hole I is formed at the lower part of the upper cover; a hole II is formed at the upper part of the upper cover; the upper cover is in sealing connection with the lower cover by fasteners; a cavity is formed in upper cover and the lower cover; light pipes are arranged in the cavity; the two ends of the light pipes are connected with optical fibers; the optical fibers are connected with the control device; the light pipes are in sealing connection with the upper cover; a plurality of holes III are formed in the light pipes; and the control device is internally provided with an emitter for emitting the infrared light and a detector for receiving the infrared light. Test gas enters the light pipes from the holes III; moisture in the test gas absorbs light wave; and the light intensity is reduced. The device measures the gas humidity according to light intensity variations detected by the control device; the detection precision is high; the measuring range is large; the hole I and the hole II are positioned on the lower right side and the upper left side of the upper cover respectively, so that a gas passing route is extended, the test gas can sufficiently enter the light pipes, the infrared light can be absorbed sufficiently, and the testing precision is improved; and the device is simple in structure and long in service life.

Description

technical field [0001] The invention relates to a device for detecting gas humidity, in particular to a device for detecting gas humidity with infrared light. Background technique [0002] Gas humidity reflects the moisture content in the gas, and its impact on our health, life and work is far beyond our imagination. People are also paying more and more attention to the detection of gas humidity. At present, there are many methods for detecting gas humidity in China, such as: dynamic method, static method, dew point method, dry and wet method and various electronic sensor methods, etc. These methods are often used in the gas environment with high humidity, but their resolution The rate is lower and the accuracy is lower. In addition, there are electrolytic sensor method, humidity sensor method, etc. The electrolytic sensor method can only measure the humidity of gas with very low humidity, and it is easy to damage the equipment when measuring ordinary air, and the measurem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/3504G01N21/3554G01N21/17
Inventor 姜允中王元明刘思广刘福彪
Owner LABTHINK INSTR