Device for detecting oxygen concentration

A technology of oxygen concentration and detection channels, which is applied in measuring devices, material analysis using sound waves/ultrasonic waves/infrasonic waves, instruments, etc., can solve the problems of large sampling data changes, long detection channels, poor consistency, etc., and achieve small sampling data changes , reduce costs, and maintain consistent results

Inactive Publication Date: 2016-03-16
FOSHAN KEYHUB ELECTRONICS IND CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a device for detecting oxygen concentration, so as to solve the problem in the prior art that during the sampling process, due to the change of the flowing gas

Method used

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  • Device for detecting oxygen concentration
  • Device for detecting oxygen concentration
  • Device for detecting oxygen concentration

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Example Embodiment

[0014] figure 2 with image 3 A specific embodiment of the present invention is shown: a device for detecting oxygen concentration, comprising a detection circuit board 1, the detection circuit board 1 is provided with a detection channel 2, and the detection channel 2 is detachably connected to the detection circuit board 1. The two ends of the detection channel 2 are respectively provided with sealing layers 3, the two sides of the detection circuit board 1 are respectively provided with ultrasonic transceiving sensors 4, the probes of the ultrasonic transceiving sensors 4 are respectively sealed in the detection channel 2 by a sealing layer 3 At both ends, a sample gas channel 5 is provided above the detection channel 2. The sample gas channel 5 is parallel to the detection circuit board 1 and crosses the detection channel 2, and one end of the sample gas channel 5 is provided with an air inlet 6. An air outlet 7 is provided at the other end, and a diffusion channel 8 is pr...

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Abstract

The invention discloses a device for detecting an oxygen concentration, and relates to the gas concentration detection technology field. The device comprises a detection circuit board. A detection channel is arranged in the detection circuit board. The detection circuit board is detachably connected with the detection circuit board. Sealing layers are arranged at two ends of the detection channel respectively. Supersonic wave transmit-receive sensors are arranged at two sides of the detection circuit board respectively. The probes of the supersonic wave transmit-receive sensors are sealed by the sealing layers at two ends of the detection channels respectively. A gas sample channel is arranged above the detection channel. The gas sample channel is parallel to the detection circuit board and is arranged crossed with the detection channel. One end of the gas sample channel is equipped with a gas inlet, and the other end of the gas sample channel is equipped with a gas outlet. A diffusion channel is arranged between the gas sample channel and the detection channel. The structure is simple and reasonable, measuring is accurate, and the cost is lowered.

Description

technical field [0001] The invention relates to the technical field of gas concentration detection, in particular to a device for detecting oxygen concentration. Background technique [0002] The device for detecting oxygen concentration in the prior art uses ultrasonic technology to measure the oxygen ratio in nitrogen-oxygen mixed gas. During the multiple sampling process of the sensor of this device, due to changes in the flowing gas, the sampling data fluctuates greatly and the consistency is poor. In addition, the inlet and outlet ends of the sample gas channel form a certain angle with the detection channel, so that in the entire detection channel, the airflow velocity and flow direction at both ends are inconsistent with the flow velocity and flow direction of the airflow in the entire detection channel, which increases the measurement error. If the influence of airflow fluctuations at the end is affected, a longer detection channel is required to meet the measurement...

Claims

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Application Information

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IPC IPC(8): G01N29/024
CPCG01N29/024G01N2291/0212
Inventor 翁兆国
Owner FOSHAN KEYHUB ELECTRONICS IND CO LTD
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