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P[2]O[5] micro water sensor

A micro-water sensor and sensor core technology, which is applied in the field of sensors, can solve the problems of low precision and long measurement time of micro-water sensors, and achieve the effect of improving detection accuracy and reducing influence

Active Publication Date: 2015-11-04
南京英格玛仪器技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a P 2 o 5 Moisture sensor, to solve the P in the prior art 2 o 5 The technical problems of long measurement time and low precision of micro-water sensor

Method used

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  • P[2]O[5] micro water sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] like figure 1 , 2 As shown, a P 2 o 5 The micro water sensor includes a sensor core 1 and a sensor body 3 . The sensor core 1 includes a glass tube substrate 11 and a platinum wire electrode 12, the platinum wire electrode 12 is arranged on the inner wall of the outlet end of the glass tube substrate 11, and the platinum wire electrode 12 is evenly coated with phosphoric acid.

[0025] In order to achieve the purpose of fast detection and more accurate measurement results, a cavity is opened in the sensor body 2, and a support ring 4 perpendicular to its length direction is arranged in the cavity, which divides the cavity into two parts, and the sensor core 1 passes through the cavity. The support ring 4 is arranged in the sensor body 3, and there is a gap between the inner wall of the sensor body 3, and the two side walls of the sensor body 3 separated by the support ring 4 are provided with a sampling gas outlet 5 and a bypass gas outlet. 6.

[0026] After the ga...

Embodiment 2

[0032] like image 3 As shown, in order to ensure that the locking device is evenly stressed, the locking device 10 further includes a screw 104 , the screw 104 passes through the connecting plate 103 and is screwed to the sensor body 3 , and there is a gap between the connecting plate 103 and the sensor body 3 . By rotating the screw 104, the connecting plate 103 in contact with the screw 104 is evenly stressed and moves down slowly to ensure that the elastic clamp tube is evenly squeezed and achieves an excellent sealing effect.

[0033] Both the first sleeve 7 and the second sleeve 8 are slidingly connected relative to the sensor body 3 .

Embodiment 3

[0035] In order to ensure that the locking device is evenly stressed, the locking device 10 further includes a screw 104 , the screw 104 passes through the connecting plate 103 and is screwed to the sensor body 3 , and there is a gap between the connecting plate 103 and the sensor body 3 . By rotating the screw 104, the connecting plate 103 in contact with the screw 104 is evenly stressed and moves down slowly to ensure that the elastic clamp tube is evenly squeezed and achieves an excellent sealing effect.

[0036] like Figure 4 As shown, in order to make the first hole 72 on the first sleeve 7 better communicate with the sampling gas outlet 5 on the sensor housing, to ensure the normal outflow of the detection gas and more accurate detection results, the first sleeve 7 is positioned by The pin 31 is fixedly connected with the sensor body 3, and the second sleeve 8 is slidably connected with the sensor body 3. Then, when the rotating screw 104 presses the connecting plate 10...

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PUM

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Abstract

The invention discloses a P[2]O[5] micro water sensor. The sensor comprises a sensor core and a sensor body. The sensor core comprises a glass tube substrate and platinum wire electrodes, and the platinum wire electrodes are arranged on the inner wall of the outlet end of the glass tube substrate. A cavity is formed inside the sensor body, a supporting ring is arranged inside the cavity for dividing the cavity into two parts, the sensor core passes through the supporting ring and is arranged inside the sensor body, and a gap is formed between the sensor core and the inner wall of the sensor body. A sample gas outlet and a bypass gas outlet are formed in the two sides of the supporting ring of the sensor body in a penetrating mode, the gas flow which passes through the bypass gas outlet is far larger than that which flows out of the sample gas outlet, the sensor core is in the atmosphere of the gas to be detected all the time, the influence on the sample gas from the external environment is reduced, the detection accuracy is improved, and fast detection can be achieved. By arranging a first sleeve, a second sleeve and a locking device in the sensor body, a test gas path and bypass gas are separated, the sealing performance is good, and the detachment is convenient.

Description

technical field [0001] The invention belongs to the technical field of sensors, in particular to a P 2 o 5 Moisture sensor. Background technique [0002] P 2 o 5 The electrode sensor uses the principle of electrolysis and adopts an inner winding electrode structure. The electrode is evenly coated with phosphoric acid. When the gas to be measured enters the P 2 o 5 When the electrode sensor is in the electrolytic H 3 PO 4 Divided into P for water 2 o 5 , P 2 o 5 is the adsorbent for absorbing moisture, P 2 o 5 The adsorption band measures the electrolysis of water in the gas into H 2 and O 2 , the electrolysis current is proportional to the moisture content, and the moisture content in the gas to be measured can be measured by measuring the electrolysis current. [0003] P 2 o 5 When the micro water sensor samples a small gas flow rate during measurement, it needs accurate control. The traditional P 2 o 5 Micro-water sensors generally have an air inlet and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/28G01N27/26
Inventor 孙贵平
Owner 南京英格玛仪器技术有限公司