Ground atmospheric pressure measuring device

A technology of air pressure monitoring and atmospheric pressure, which is applied in the direction of fluid pressure measurement by changing the ohmic resistance, can solve problems such as differences in ground air pressure, and achieve the effects of long recording time, stable and reliable performance, and strong anti-interference ability

Inactive Publication Date: 2015-07-29
DUNHUANG ACAD
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Problems solved by technology

In this area, the soil air pressure is affected and controlled by the atmosphere on the one hand, and changes with the atmosphere, but at the same time, it is affected by the natural environmental conditions such as the internal temperature, humidity, and salinity of the soil and its own composition, resulting in different regions. air pressure difference

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Embodiment Construction

[0018] The atmospheric pressure transmitter used in the present invention (HD9408T, produced by DeltaOHM, Italy, has a measurement range: 600~1100 mBar; overload: 2 bar; accuracy: ±0.4 mbar; output: 4-20 mA; working temperature: -30~ +60℃); The configuration recorder is a BT805 paperless recorder (produced by Xiamen Bert Automation Engineering Co., Ltd.), and the recording interval can be set freely from several seconds to several hours according to specific needs. Five-digit display, high accuracy, matching with atmospheric pressure transmitter HD9408T, resolution up to 0.1 hPa. U disk transfer to save, easy to download and analyze. The power supply can choose AC 220V power supply or DC 24V power supply meter according to actual needs.

[0019] Attached below figure 1 , The technical scheme of the present invention will be further explained:

[0020] Such as figure 1 As shown, a ground pressure monitoring device is composed of an atmospheric pressure transmitter 1, a paperless r...

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Abstract

The invention discloses a ground atmospheric pressure measuring device as well as use installation and interpretation methods of the ground atmospheric pressure measuring device. The ground atmospheric pressure measuring device is composed of atmospheric pressure transmitters, a paperless recorder, data transmission lines and a power source. All the atmospheric pressure transmitters except for one that is arranged on the surface of ground to monitor atmospheric pressure, are buried in aeration zone soil; the paperless recorder is connected with the atmospheric pressure transmitters respectively through the data transmission lines and is connected with the power source through the data transmission line. The ground atmospheric pressure measuring device of the invention can monitor the change of ground atmospheric pressure for a long time, and provides technical and equipment support for cultural relic protection, scientific research and exploration, production and the like.

Description

Technical field [0001] The invention relates to a measuring device for earth air pressure. Specifically, the application of this device can measure the subtle changes of soil pressure in the underground vadose zone, and provide technical support for geophysical and chemical investigations. [0002] Background technique [0003] As we all know, soil is composed of three types of substances: solid, liquid and gas. Solid matter includes soil minerals, organic matter and microorganisms; liquid matter mainly refers to soil moisture; gas is the air existing in the pores of the soil. These three types of substances in the soil constitute an organic unity. From a geological point of view, the zone above the diving surface below the ground is called an aeration zone. It is a complex system of rock and soil particles, water, and air. Regardless of the soil in the usual sense or the vadose zone referred to in geology, this area forms a continuous unity with the outside atmosphere due to t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L9/06
Inventor 李红寿汪万福詹鸿涛邱飞
Owner DUNHUANG ACAD
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