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Sensor calibration device

A calibration device and sensor technology, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of T90 response time not reaching the standard, calibration and detection impact, etc., and achieve the effect of simple structure and convenient calibration operation

Inactive Publication Date: 2015-12-23
HARBIN EAST ALARM EQUIP DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When there is flammable gas in the quad-core sensor, the sensor shell should be designed as an explosion-proof structure, and the breathing device of the explosion-proof structure will affect the calibration and detection of gases with strong adsorption
For example, in the traditional calibration cover structure, the air intake is from the middle position, and the four sensors are evenly distributed around. Because the air intake is not directly aligned with the sensor, the response time of T90 gas with strong adsorption force cannot meet the standard.

Method used

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Examples

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specific Embodiment approach 1

[0015] A sensor calibration device, comprising a cylindrical bottom surface (2-2), a boss (2-1), and a cylindrical thin-walled ring (1-2), characterized in that: the cylindrical thin-walled ring is connected to the top of the cylindrical bottom surface (2-2) (1-2) and the boss (2-1), the boss (2-1) is located inside the cylindrical thin-walled ring (1-2), and the bottom surface of the cylinder (2-2) is provided with a bottom exhaust hole (3-1) and air intake holes (3-2), the inside of the boss (2-1) is provided with exhaust holes and air intake holes (3-2) corresponding to the bottom surface of the cylinder (2-2) .

[0016] The cylindrical thin-walled ring (1-2) is provided with a positioning groove (1-1), and a plurality of side exhaust holes (1-3) are arranged around the cylindrical thin-walled ring (1-2).

[0017] There are two bottom exhaust holes (3-1), and there are also two corresponding exhaust holes on the boss (2-1).

specific Embodiment approach 2

[0019] Such as figure 1 As shown, the front view structure includes a positioning groove (1-1), a cylindrical thin-walled ring (1-2), and a side exhaust hole (1-3). The positioning groove (1-1) is located at the upper end of the cylindrical thin-walled ring (1-2), and can be assembled with the sensor cover to rotate 360 ​​degrees so that the air inlet is aligned with the position of the sensor with strong adsorption force, and the side exhaust hole (1 -3) Exhaust is evenly distributed around the cylindrical thin-walled ring.

specific Embodiment approach 3

[0021] Such as figure 2 As shown, the top view structure includes a boss (2-1), a cylindrical bottom surface (2-2), a side exhaust hole (1-3), and a cylindrical thin-walled ring (1-2). The boss (2-1) and the cylindrical thin-walled ring (1-2) are located on the upper part of the bottom surface (2-2).

[0022] like image 3 As shown, the cross-sectional structure includes a bottom exhaust hole (3-1), an air intake hole (3-2), a side exhaust hole (1-3) and a boss (2-1). The bottom exhaust hole (3-1) and air inlet hole (3-2) pass through the boss (2-1) and are connected to the sensor ground for gas detection.

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Abstract

The invention discloses a sensor calibration device which comprises a cylindrical bottom face, a boss and a cylindrical thin-walled ring. The sensor calibration device is characterized in that the top of the cylindrical bottom face is connected with the cylindrical thin-walled ring and the boss, the boss is located inside the cylindrical thin-walled ring, bottom exhaust holes and an air inlet hole are formed in the cylindrical bottom face, and exhaust holes and an air inlet which correspond to the cylindrical bottom face are formed in the boss. The sensor calibration device has the advantages that the sensor calibration device is simple in structure, calibration operation is convenient, and the response time for calibration of gas T90 having good adsorption capacity reaches a standard value.

Description

technical field [0001] The invention relates to a sensor calibration device, in particular to a quad-core sensor calibration device. Background technique [0002] At present, in the field of gas detection, the gas detection equipment needs to be calibrated before entering the gas detection environment, and the value of the detection equipment is calibrated by a certain concentration of standard gas. When there are four types of detected gases in the gas environment, it is necessary to install gas detection equipment with quad-core sensors, and the four sensors must be calibrated separately before use. When there is flammable gas in the quad-core sensor, the sensor shell should be designed as an explosion-proof structure, and the breathing device of the explosion-proof structure will affect the calibration and detection of gases with strong adsorption. For example, in the traditional calibration cover structure, the air intake is from the middle position, and the four sensor...

Claims

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Application Information

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IPC IPC(8): G01N33/00
Inventor 赵秋英魏晓东姜崇波周宇华
Owner HARBIN EAST ALARM EQUIP DEV
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