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Pressure gauge and method for measurement of pressure

A pressure gauge and pressure value technology, applied in the field of measurement and testing, can solve the problems of limited calibration period of the method of measuring pressure, low reliability of the measurement result of the pressure gauge, and inability to guarantee the reliability of the measurement result of the pressure gauge.

Active Publication Date: 2018-05-08
CHNA ENERGY INVESTMENT CORP LTD +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] If the pressure gauge is placed downhole, the pressure gauge cannot be taken out for calibration every calibration cycle due to the long-term non-workover after well closure, resulting in low reliability of the measurement results output by the pressure gauge
It can be seen that the current method of measuring pressure is limited by the calibration cycle. If the pressure gauge is not calibrated when the calibration cycle expires, the reliability of the measurement results output by the pressure gauge cannot be guaranteed.

Method used

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  • Pressure gauge and method for measurement of pressure
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  • Pressure gauge and method for measurement of pressure

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Embodiment Construction

[0051] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.

[0052]In the related technology, the pressure gauge includes a pressure sensor. After the measuring personnel place the pressure gauge downhole, the pressure sensor contacts the measurement medium, thus bears the pressure exerted by the measurement medium on the pressure sensor, and the pressure sensor senses the pressure signal. After the pressure signal is processed, it is converted into a pressure value and output to the user. That is to say, the pressure signal sensed by the pressure sensor is accurate by default. However, as the usage time increases, the errors caused by the pressure sensor itself (for example: errors caused by zero point drift and tempe...

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Abstract

The present invention discloses a pressure gauge and a method for measurement of pressure. The pressure gauge comprises a body, and a plurality of pressure sensors and a control circuit which are arranged in the body. The pressure sensors can contact measurement medium in order and can be correspondingly connected with the control circuit in order to output pressure signals. The pressure gauge isemployed to connect the pressure sensors with the control circuit in order to output the pressure signals, and the pressure sensors included in the pressure gauge can continuously work. The method isnot limited to the calibration cycle of one sensor, and therefore pressure measurement with a calibration cycle being longer than the calibration cycle of one sensor is achieved.

Description

technical field [0001] The present disclosure relates to the field of measurement testing, and in particular, to a pressure gauge and a method for measuring pressure. Background technique [0002] A manometer is a common measuring instrument used to measure pressure. Since the pressure gauge has zero drift and temperature drift, it is necessary to calibrate the pressure gauge every calibration cycle, so as to improve the reliability of the measurement results output by the pressure gauge. [0003] If the pressure gauge is placed downhole, the pressure gauge cannot be taken out for calibration every calibration cycle due to the long-term non-workover after the well closure, resulting in low reliability of the measurement results output by the pressure gauge. It can be seen that the current method of measuring pressure is limited by the calibration cycle, if the pressure gauge is not calibrated when the calibration cycle expires, the reliability of the measurement results out...

Claims

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Application Information

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IPC IPC(8): G01L19/00G01L27/00
CPCG01L19/00G01L27/002
Inventor 张峰翁力赵兴雷马睿何平郭屹
Owner CHNA ENERGY INVESTMENT CORP LTD
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